Subtilase enzymes

Description

BACKGROUND OF THE INVENTION

[0002] 1. Field of the Invention

[0003] The present invention relates to subtilase enzymes having an additional amino acid in the active site loop (c) region from position 125 to 132 and detergent and cleaning compositions comprising same. The invention further relates to genes coding for the expression of said enzymes when inserted into a suitable host cell or organism; and host cells transformed therewith, and methods for producing the enzymes.

[0004] 2. Description of the Related Art

[0005] In the detergent industry, enzymes have been used in washing formulations for more than 30 years. Such enzymes include proteases, lipases, amylases, cellulases, as well as other enzymes, or mixtures thereof. The most important commercially are proteases.

[0006] An increasing number of commercially used proteases are protein engineered variants of naturally occurring wild-type proteases, e.g. DURAZYM® (Novo Nordisk A/S), RELASE® (Novo Nordisk A/S), MAXAPEM® (Gist-Brocades N.V.), PURAFECT® (Genencor International, Inc.).

[0007] In addition, a number of protease variants have been described in the art, such as in EP 130756 (GENENTECH) (corresponding to U.S. Reissue Pat. No. 34,606 (GENENCOR)); EP 214435 (HENKEL); WO 87/04461 (AMGEN); WO 87/05050 (GENEX); EP 260105 (GENENCOR); Thomas, Russell, and Fersht, Nature, 318, 375-376 (1985); Thomas, Russell, and Fersht, J. Mol. Biol., 193, 803-813 (1987); Russel and Fersht, Nature, 328, 496-500 (1987); WO 88/08028 (Genex); WO 88/08033 (Amgen); WO 95/27049 (SOLVAY S.A.); WO 95/30011 (PROCTER & GAMBLE COMPANY); WO 95/30010 (PROCTER & GAMBLE COMPANY); WO 95/29979 (PROCTER & GAMBLE COMPANY); U.S. Pat. No. 5.543.302 (SOLVAY S.A.); EP 251 446 (GENENCOR); WO 89/06279 (NOVO NORDISK A/S) ; WO 91/00345 (NOVO NORDISK A/S); EP 525 610 A1 (SOLVAY) and WO 94/02618 (GIST-BROCADES N.V.).

[0008] However, even though a number of useful protease variants have been described, there is still a need for new improved proteases or protease variants for a number of industrial uses.

[0009] Therefore, an object of the present invention is to provide improved proteases or protein engineered protease variants, especially for use in the detergent industry.

SUMMARY OF THE INVENTION

[0010] The present inventors have found that subtilisins wherein at least one of the active site loops are longer than those presently known, exhibit improved wash performance properties in detergent compositions. The identification thereof was done by constructing subtilisin variants, especially of the subtilisin 309 (BLSAVI or SAVINASE®), which exhibited improved wash performance properties in detergent compositions relative to the parent wild-type enzyme. This has been described in our earlier application DK 1332/97, which published as WO 99/27082.

[0011] It has now been found that certain subtilases or variants thereof of the I-S1 (true “subtilisins”) and I-S2 (high alkaline subtilisins) sub-groups having at least one additional amino acid residue in the active site loop (c) region from position 125 to 132, exhibit surprisingly improved wash performance in comparison to those presently known and those described in said application.

[0012] The improved proteases according to the invention may be obtained by isolation from natural resources or by the introduction of at least is one further amino acid residue (an insertion) in the active site loop (c) region in a wild-type subtilase (for a definition of the active site loops and the numbering of positions see below).

[0013] Although this finding was done in subtilisin 309, it is predicted that it will be possible to produce or isolate similar advantageous subtilases or subtilase variants.

[0014] Furthermore it will be possible to specifically screen natural isolates to identify wild-type subtilases comprising an active site loop (c) region which is longer than the corresponding active site loop in known wild-type subtilases, such as subtilisin 309, which subtilases can be considered to have an inserted amino acid residue in the active site loop (c) region, and exhibiting excellent wash performance in a detergent, in comparison to their closest related known subtilisin, such as subtilisin 309.

[0015] Concerning alignment and numbering, reference is made to FIGS. 1A, 1B, 2A and 2B showing alignments between subtilisin BPN′ (BASBPN) (a) and subtilisin 309 (BLSAVI) (b), and alignments between subtilisin BPN′ (a) (BASBPN) and subtilisin Carlsberg (g) (BLSCAR). These alignments are used herein as a reference for numbering the residues.

[0016] The seven active site loops (a) to (g) are herein defined as the segments of amino acid residues provided below (including the terminal amino acid residues):

[0017] (a) the region between amino acid residue 33 and 43;

[0018] (b) the region between amino acid residue 95 and 103;

[0019] (c) the region between amino acid residue 125 and 132;

[0020] (d) the region between amino acid residue 153 and 173;

[0021] (e) the region between amino acid residue 181 and 195;

[0022] (f) the region between amino acid residue 202 and 204;

[0023] (g) the region between amino acid residue 218 and 219.

[0024] Accordingly, in a first aspect the invention relates to an isolated (i.e. greater than 10% pure) subtilase enzyme of the I-S1 and I-S2 sub-groups having at least one additional amino acid residue in the active site loop (c) region from position 125 to 132, whereby said additional amino acid residue(s) corresponds to the insertion of at least one amino acid residue.

[0025] In a second aspect the invention relates to an isolated DNA sequence encoding a subtilase variant of the invention.

[0026] In a third aspect the invention relates to an expression vector comprising an isolated DNA sequence encoding a subtilase variant of the invention.

[0027] In a fourth aspect the invention relates to a microbial host cell transformed with an expression vector according to the third aspect.

[0028] In a further aspect the invention relates to the production of the subtilisin enzymes of the invention.

[0029] The enzymes of the invention can generally be produced by either cultivation of a microbial strain from which the enzyme was isolated and recovering the enzyme in substantially pure form; or by inserting an expression vector according to the third aspect of the invention into a suitable microbial host, cultivating the host to express the desired subtilase enzyme, and recovering the enzyme product.

[0030] Further the invention relates to a composition comprising a subtilase or subtilase variant of the invention.

[0031] Even further the invention relates to the use of the enzymes of the invention for a number of industrial relevant uses, in particular for use in cleaning and detergent compositions, comprising the subtilisin enzymes of the present invention.

[0032] Definitions

[0033] Prior to discussing this invention in further detail, the following terms and conventions will first be defined.

1NOMENCLATURE OF AMINO ACIDSAAlaAlanineVValValineLLeuLeucineIIleIsoleucinePProProlineFPhePhenylalanineWTrpTryptophanMMetMethionineGGlyGlycineSSerSerineTThrThreonineCCysCysteineYTyrTyrosineNAsnAsparagineQGlnGlutamineDAspAspartic AcidEGluGlutamic AcidKLysLysineRArgArginineHHisHistidineXXaaAny amino acidNOMENCLATURE OF NUCLEIC ACIDSAAdenineGGuanineCCytosineTThymine (only in DNA)UUracil (only in RNA)

[0034] Nomenclature and Conventions for Designation of Variants

[0035] In describing the subtilases of the present invention, the following nomenclatures and conventions have been adapted for ease of reference:

[0036] A frame of reference is first defined by aligning the isolated or parent wild-type enzyme with subtilisin BPN′ (BASBPN).

[0037] The alignment can be obtained by the GAP routine of the GCG package version 9.1 to number the variants using the following parameters: gap creation penalty=8 and gap extension penalty=8 and all other parameters kept at their default values.

[0038] Another method is to use known recognized alignments between subtilases, such as the alignment indicated in WO 91/00345. In most is cases the differences will not be of any importance.

[0039] Such alignments between subtilisin BPN′ (BASBPN) and subtilisin 309 (BLSAVI) and subtilisin Carlsberg (BLSCAR), respectively are indicated in FIGS. 1A, 1B, 2A, and 2B. They define a number of deletions and insertions in relation to BASBPN. In FIG. 1A, subtilisin 309 has 6 deletions in positions 36, 58, 158, 162, 163, and 164 in comparison to BASBPN, whereas in FIG. 1B subtilisin 309 has the same deletions in positions 36, 56, 159, 164, 165, and 166 in comparison to BASBPN. In FIG. 2A subtilisin Carlsberg has one deletion in position 58 in comparison to BASBPN, whereas in FIG. 2B subtilisin Carlsberg has the one deletion in position 56 in comparison to BASBPN. These deletions are indicated in FIGS. 1A, 1B, 2A, and 2B by asterisks (*).

[0040] The various modifications performed in a wild-type enzyme are indicated in general using three elements as follows:

Original Amino Acid Position Substituted Amino Acid

[0041] Thus, the notation G195E means a substitution of glycine in position 195 with glutamic acid.

[0042] In the case when the original amino acid residue may be any amino acid residue, a short hand notation may at times be used indicating only the position and substituted amino acid,

Position Substituted Amino Acid

[0043] Such a notation is particularly relevant in connection with modification(s) in homologous subtilases (vide infra).

[0044] Similarly when the identity of the substituting amino acid residue(s) is immaterial, the following short hand notation can be used:

Original Amino Acid Position

[0045] When both the original amino acid(s) and substituted amino acid(s) may comprise any amino acid, then only the position is indicated, e.g., 170.

[0046] When the original amino acid(s) and/or substituted amino acid(s) may comprise more than one, but not all amino acid(s), then the selected amino acids are indicated inside brackets { },

Original Amino Acid Position {Substituted Amino Acidl, . . . , Substituted Amino Acidn}

[0047] For specific variants the specific three or one letter codes are used, including the codes Xaa and X to indicate any amino acid residue.

[0048] Substitutions:

[0049] The substitution of glutamic acid for glycine in position 195 is designated as:

[0050] Gly195Glu or G195E

[0051] or the substitution of any amino acid residue acid for glycine in position 195 is designated as:

[0052] Gly195Xaa or G195X or Gly195 or G195

[0053] The substitution of serine for any amino acid residue in position 170 would thus be designated

[0054] Xaa170Ser or X170S or 170Ser or 170S.

[0055] Thus, 170Ser comprises e.g. both a Lys170Ser modification in BASBPN and an Arg170Ser modification in BLSAVI (cf. FIG. 1).

[0056] For a modification where the original amino acid(s) and/or substituted amino acid(s) may comprise more than one, but not all amino acid(s), the substitution of glycine, alanine, serine or threonine for arginine in position 170 would be indicated by

[0057] Arg170{Gly,Ala,Ser,Thr} or R170{G,A,S,T}

[0058] to indicate the variants

[0059] R170G, R170A, R170S, and R170T.

[0060] Deletions:

[0061] A deletion of glycine in position 195 is indicated by:

[0062] Gly195*or G195*

[0063] Similarly, the deletion of more than one amino acid residue, such as the deletion of glycine and leucine in positions 195 and 196 is designated

[0064] Gly195*+Leu196* or G195*+L196*

[0065] Insertions:

[0066] The insertion of an additional amino acid residue such as e.g. a lysine after G195 is designated:

[0067] Gly195GlyLys or G195GK; or

[0068] when more than one amino acid residue is inserted, such as e.g. a Lys, Ala and Ser after G195 this is shown as:

[0069] Gly195GlyLysAlaSer or G195GKAS (SEQ ID NO: 1)

[0070] In such cases the inserted amino acid residue(s) are numbered by the addition of lower case letters to the position number of the amino acid residue preceding the inserted amino acid residue(s). In the above example the sequences 194 to 196 would thus be:

2194 195 196BLSAVIA - G - L194 195 195a 195b 195c 196VariantA - G - K - A - S - L(SEQ ID NO: 2)

[0071] In cases where an amino acid residue identical to the existing amino acid residue is inserted it is clear that a degeneracy in the nomenclature arises. If for example a glycine is inserted after the glycine in the above example this would be indicated by G195GG. The same actual change could just as well be indicated as A194AG for the change from

3194 195 196BLSAVIA - G - Lto194 195 195a 196VariantA - G - G - L(SEQ ID NO: 3)194 194a 195 196

[0072] Such instances will be apparent to the skilled person. Thus, it is to be understood that the indication G195GG and corresponding indications encompass such equivalent degenerate indications.

[0073] Sometimes it is desired to both perform a modification and an insertion at the same position. This situation is also covered by the present definitions. Thus, S130TP indicates that the serine in position 130 has been replaced by a tyrosine and a proline. Another way to describe this variant is S130SP+S130T.

[0074] Filling a Gap:

[0075] Where a deletion in an enzyme exists in the reference comparison with the subtilisin BPN′ sequence used for the numbering, an insertion in such a position is indicated as:

[0076] *36Asp or *36D

[0077] for the insertion of an aspartic acid at position 36.

[0078] Multiple Modifications

[0079] Variants comprising multiple modifications are separated by pluses, e.g.:

[0080] Arg170Tyr+Gly195Glu or R170Y+G195E

[0081] representing modifications in positions 170 and 195 substituting tyrosine and glutamic acid for arginine and glycine, respectively, or e.g. Tyr167{Gly,Ala,Ser,Thr}+Arg170{Gly,Ala,Ser,Thr} designates the variants

[0082] Tyr167Gly+Arg170Gly, Tyr167Gly+Arg170Ala,

[0083] Tyr167Gly+Arg170Ser, Tyr167Gly+Arg170Thr,

[0084] Tyr167Ala+Arg170Gly, Tyr167Ala+Arg170Ala,

[0085] Tyr167Ala+Arg170Ser, Tyr167Ala+Arg170Thr,

[0086] Tyr167Ser+Arg170Gly, Tyr167Ser+Arg170Ala,

[0087] Tyr167Ser+Arg170Ser, Tyr167Ser+Arg170Thr,

[0088] Tyr167Thr+Arg170Gly, Tyr167Thr+Arg170Ala,

[0089] Tyr167Thr+Arg170Ser, and Tyr167Thr+Arg170Thr.

[0090] This nomenclature is particularly relevant for designating modifications that are substitutions, insertions or deletions of amino acid residues having specific common properties, such as residues of positive charge (K, R, H), negative charge (D, E), or conservative amino acid modification(s) of e.g. Tyr167{Gly,Ala,Ser,Thr}+Arg170{Gly,Ala,Ser,Thr}, which signifies substituting a small amino acid for another small amino acid. See section “Detailed description of the invention” for further details.

[0091] Numbering of Amino Acid Positions/Residues

[0092] For purposes of this invention, the numbering of amino acids corresponds to that of the amino acid sequence of subtilase BPN′ (BASBPN). For further description of the amino acid sequence of subtilisin BPN′, see FIGS. 1 and 2, or Siezen et al., Protein Engng., 4, 719-737 (1991).

[0093] Proteases

[0094] Enzymes cleaving the amide linkages in protein substrates are classified as proteases, or (interchangeably) peptidases (see Walsh, 1979, Enzymatic Reaction Mechanisms. W. H. Freeman and Company, San Francisco, Chapter 3).

[0095] Serine Proteases

[0096] A serine protease is an enzyme which catalyzes the hydrolysis of peptide bonds, and in which there is an essential serine residue at the active site (White, Handler and Smith, “Principles of Biochemistry,” Fifth Edition, McGraw-Hill Book Company, NY, pp. 271-272 (1973)).

[0097] The bacterial serine proteases have molecular weights in the 20,000 to 45,000 Dalton range. They are inhibited by diisopropylfluorophosphate. They hydrolyze simple terminal esters and are similar in activity to eukaryotic chymotrypsin, also a serine protease. A more narrow term, alkaline protease, covering a sub-group, reflects the high pH optimum of some of the serine proteases, from pH 9.0 to 11.0 (for review, see Priest, Bacteriological Rev., 41, 711-753 (1977)).

[0098] Subtilases

[0099] A sub-group of the serine proteases tentatively designated subtilases has been proposed by Siezen et al., Protein Engng., 4, 719-737 (1991) and Siezen et al., Protein Science, 6, 501-523 (1997). They are defined by homology analysis of more than 170 amino acid sequences of serine proteases previously referred to as subtilisin-like proteases. A subtilisin was previously often defined as a serine protease produced by gram-positive bacteria or fungi, and according to Siezen et al. now is a subgroup of the subtilases. A wide variety of subtilases have been identified, and the amino acid sequence of a number of subtilases has been determined. For a more detailed description of such subtilases and their amino acid sequences reference is made to Siezen et al. (1997).

[0100] One subgroup of the subtilases, I-S1 or “true#” subtilisins, comprises the “classical” subtilisins, such as subtilisin 168 (BSS168), subtilisin BPN′, subtilisin Carlsberg (ALCALASE®, NOVO NORDISK A/S), and subtilisin DY (BSSDY).

[0101] A further subgroup of the subtilases, I-S2 or high alkaline subtilisins, is recognized by Siezen et al. Sub-group I-S2 proteases are described as highly alkaline subtilisins and comprises enzymes such as subtilisin PB92 (BAALKP) (MAXACAL®, Gist-Brocades NV), subtilisin 309 (SAVINASE®, NOVO NORDISK A/S) , subtilisin 147 (BLS147) (ESPERASE®, NOVO NORDISK A/S), and alkaline elastase YaB (BSEYAB).

[0102] List of Acronyms for Subtilases:

[0103] I-S1

[0104] Subtilisin 168, BSS168 (BSSAS (Subtilisin amylosacchariticus)), BSAPRJ (Subtilisin J), BSAPRN (Subtilisin NAT), BMSAMP (Mesentericopeptidase),

[0105] Subtilisin BPN′, BASBPN,

[0106] Subtilisin DY, BSSDY,

[0107] Subtilisin Carlsberg, BLSCAR (BLKERA (Keratinase), BLSCA1, BLSCA2, BLSCA3),

[0108] BSSPRC, Serine protease C

[0109] BSSPRD, Serine protease D

[0110] I-S2

[0111] Subtilisin Sendai, BSAPRS

[0112] Subtilisin ALP 1, BSAPRQ,

[0113] Subtilisin 147, Esperase®, BLS147 (BSAPRM (SubtilisinAprM) , BAH101)

[0114] Subtilisin 309, SAVINASE®, BLS309/BLSAVI (BSKSMK (M-protease), BAALKP (Subtilisin PB92, Bacillus alkalophilic alkaline protease), BLSUBL (Subtilisin BL)),

[0115] Alkaline elastase YaB, BYSYAB

[0116] “SAVINASE®”

[0117] SAVINASE® is marketed by NOVO NORDISK A/S. It is subtilisin 309 from B. lentus and differs from BAALKP only in one position (N87S, see FIG. 1). SAVINASE® has the amino acid sequence designated b) in FIG. 1.

[0118] Parent Subtilase

[0119] The term “parent subtilase” describes a subtilase defined according to Siezen et al. (1991 and 1997). For further details see description of “SUBTILASES” immediately above. A parent subtilase may also be a subtilase isolated from a natural source, wherein subsequent modification have been made while retaining the characteristic of a subtilase. Alternatively the term “parent subtilase” may be termed “wild-type subtilase”.

[0120] Modification(s) of a Subtilase Variant

[0121] The term “modification(s)” used herein is defined to include chemical modification of a subtilase as well as genetic manipulation of the DNA encoding a subtilase. The modification(s) can be replacement(s) of the amino acid side chain(s), substitution(s), deletion(s) and/or insertions in or at the amino acid(s) of interest.

[0122] Subtilase Variant

[0123] In the context of this invention, the term subtilase variant or mutated subtilase means a subtilase that has been produced by an organism which is expressing a mutant gene derived from a parent microorganism which possessed an original or parent gene and which produced a corresponding parent enzyme, the parent gene having been mutated in order to produce the mutant gene from which said mutated subtilase protease is produced when expressed in a suitable host.

[0124] Homologous Subtilase Sequences

[0125] The present invention relates to modified subtiliases comprising an insertion in the active site loop (b) region in the subtilase SAVINASE® and other parent (wild-type) subtilases, which have a homologous primary structure to that of SAVINASE®. The homology between two amino acid sequences is in this context described by the parameter “identity”.

[0126] In order to determine the degree of identity between two subtilases the GAP routine of the GCG package version 9.1 can be applied using the same settings as indicated above. The output from the routine is besides the amino acid alignment the calculation of the “Percent Identity” between the two sequences.

[0127] Based on this description it is routine for a person skilled in the art to identify suitable homologous subtilases and corresponding homologous active site loop regions, which can be modified according to the invention.

[0128] Wash Performance

[0129] The ability of an enzyme to catalyze the degradation of various naturally occurring substrates present on the objects to be cleaned during e.g. wash or hard surface cleaning is often referred to as its washing ability, wash-ability, detergency, or wash performance. Throughout this application the term wash performance will be used to encompass this property.

[0130] Isolated DNA Sequence

[0131] The term “isolated”, when applied to a DNA sequence molecule, denotes that the DNA sequence has been removed from its natural genetic milieu and is thus free of other extraneous or unwanted coding sequences, and is in a form suitable for use within genetically engineered protein production systems. Such isolated molecules are those that are separated from their natural environment and include cDNA and genomic clones. Isolated DNA molecules of the present invention are free of other genes with which they are ordinarily associated, but may include naturally occurring 5′ and 3′ untranslated regions such as promoters and terminators. The identification of associated regions will be evident to one of ordinary skill in the art (see for example, Dynan and Tijan, Nature, 316, 774-78 (1985)). The term “an isolated DNA sequence” may alternatively be termed “a cloned is DNA sequence”.

[0132] Isolated Protein

[0133] When applied to a protein, the term “isolated” indicates that the protein has been removed from its native environment.

[0134] In a preferred form, the isolated protein is substantially free of other proteins, particularly other homologous proteins (i.e. “homologous impurities” (see below)).

[0135] An isolated protein is greater than 10% pure, preferably greater than 20% pure, more preferably greater than 30% pure, as determined by SDS-PAGE. Further it is preferred to provide the protein in a highly purified form, i.e., greater than 40% pure, greater than 60% pure, greater than 80% pure, more preferably greater than 95% pure, and even more preferably greater than 99% pure, as determined by SDS-PAGE.

[0136] The term “isolated protein” may alternatively be termed “purified protein”.

[0137] Homologous Impurities

[0138] The term “homologous impurities” means any impurity (e.g. a polypeptide other than the polypeptide of the invention) which originates from the homologous cell where the polypeptide of the invention is originally obtained from.

[0139] Obtained From

[0140] The term “obtained from” as used herein in connection with a specific microbial source, means that the polynucleotide and/or polypeptide is produced by the specific source, or by a cell in which a gene from the source has been inserted.

[0141] Substrate

[0142] The term “Substrate” used in connection with a substrate for a protease should be interpreted in its broadest form as comprising a compound containing at least one peptide bond susceptible to hydrolysis by a subtilisin protease.

[0143] Product

[0144] The term “product” used in connection with a product derived from a protease enzymatic reaction should in the context of this invention be interpreted to include the products of a hydrolysis reaction involving a subtilase protease. A product may be the substrate in a subsequent hydrolysis reaction.

BRIEF DESCRIPTION OF THE DRAWINGS

[0145]
FIG. 1A shows an alignment of subtilisin BPN′ (a) (SEQ ID NO: 4) and SAVINASE® (b) (SEQ ID NO: 5) using the GAP routine mentioned above.

[0146]
FIG. 1B shows the alignment of subtilisin BPN′ (SEQ ID NO: 4) and SAVINASE® (SEQ ID NO: 5) as taken from WO 91/00345.

[0147]
FIG. 2A shows an alignment of subtilisin BPN′ (SEQ ID NO: 4) and subtilisin Carlsberg (SEQ ID NO: 6) using the GAP routine mentioned above.

[0148]
FIG. 2B shows the alignment of subtilisin BPN′ (SEQ ID NO: 4) and subtilisin Carlsberg (SEQ ID NO: 6) as taken from WO 91/00345.

[0149]
FIG. 3 shows the three dimensional structure of SAVINASE (Protein data bank (PDB) entry 1SVN), which indicates the active site loop (c) region.

DETAILED DESCRIPTION OF THE INVENTION

[0150] The subtilases of the invention in a first aspect relates to an isolated (i.e. greater than 10% pure) subtilase enzyme of the I-S1 and I-S2 sub-groups having at least one additional amino acid residue in the active site loop (c) region from position 125 to 132, whereby said additional amino acid residue(s) correspond to the insertion of at least one amino acid residue.

[0151] In other words the subtilases of the invention are characterized by comprising an active site loop (c) region of more than 8 amino acid residues.

[0152] In a preferred embodiment, the subtilases of the present invention have at least one additional amino acid residue between positions 125 and 126.

[0153] In a preferred embodiment, the subtilases of the present invention have at least one additional amino acid residue between positions 126 and 127.

[0154] In a preferred embodiment, the subtilases of the present invention have at least one additional amino acid residue between positions 127 and 128.

[0155] In a preferred embodiment, the subtilases of the present invention have at least one additional amino acid residue between positions 128 and 129.

[0156] In a preferred embodiment, the subtilases of the present invention have at least one additional amino acid residue between positions 129 and 130.

[0157] In a preferred embodiment, the subtilases of the present invention have at least one additional amino acid residue between positions 130 and 131.

[0158] In a preferred embodiment, the subtilases of the present invention have at least one additional amino acid residue between positions 131 and 132.

[0159] In a preferred embodiment, the subtilases of the present invention have at least one additional amino acid residue between positions 132 and 133.

[0160] A subtilase of the first aspect of the invention may be a parent or wild-type subtilase identified and isolated from nature.

[0161] Such a parent wild-type subtilase may be specifically screened for by standard techniques known in the art.

[0162] One preferred way of doing this may be by specifically PCR amplify DNA regions known to encode active site loops in subtilases from numerous different microorganism, preferably different Bacillus strains.

[0163] Subtilases are a group of conserved enzymes, in the sense that their DNA and amino acid sequences are homologous. Accordingly it is possible to construct relatively specific primers flanking active site loops.

[0164] One way of doing this is by investigating an alignment of different subtilases (see e.g. Siezen et al., Protein Science, 6, 501-523 (1997)). It is from this routine work for a person skilled in the art to construct PCR primers flanking the active site loop corresponding to the active site loop (c) region between amino acid residues 125 and 132 in an I-S1 or I-S2 group subtilase, such as from BLSAVI. Using such PCR primers to amplify DNA from a number of different microorganism, preferably different Bacillus strains, followed by DNA sequencing of said amplified PCR fragments, it will be possible to identify strains which produce subtilases of these groups comprising a longer, as compared to e.g. BLSAVI, active site region corresponding to the active site loop (c) region from position 125 to 132. Having identified the strain and a partial DNA sequence of such a subtilase of interest, it is routine work for a person skilled in the art to complete cloning, expression and purification of such a subtilase of the invention.

[0165] However, it is envisaged that a subtilase enzyme of the invention predominantly is a variant of a parent subtilase.

[0166] Accordingly, in one embodiment the invention relates to an isolated subtilase enzyme according to the first aspect of the invention, wherein said subtilase enzyme is a constructed variant having a longer active site loop (c) region than its parent enzyme.

[0167] The subtilases of the invention exhibit excellent wash performance in a detergent, and if the enzyme is a constructed variant an improved wash performance in a detergent in comparison to its closest related subtilase, such as subtilisin 309.

[0168] Different subtilase products will exhibit a different wash performance in different types of detergent compositions. A subtilase of the invention has improved wash performance, as compared to its closest relative in a majority of such different types of detergent compositions.

[0169] Preferably, a subtilase enzyme of the invention has improved wash performance, as compared to its closest relative in the detergent compositions described in Example 3.

[0170] In order to determine if a given subtilase amino acid sequence (irrelevant whether said subtilase sequence is a parent wild-type subtilase sequence or a subtilase variant sequence produced by any other method than by site directed mutagenesis) is within the scope of the invention, the following procedure may be used:

[0171] (a) align said subtilase sequence to the amino acid sequence of subtilisin BPN′;

[0172] (b) based on the alignment performed in step (a) identify the active site loop (c) region, in said subtilase sequence corresponding to the active site loop (c) region of subtilisin BPN′ comprising the region between amino acid residues 125 and 132 (both of the end amino acids included);

[0173] (c) determine if the active site loop (c) region in said subtilase sequence, identified in step (b) is longer than the corresponding active site loop region in subtilisin BPN′.

[0174] If this is the case the subtilase investigated is a subtilase within the scope of the present invention.

[0175] The alignment performed in step (a) above is performed as described above by using the GAP routine.

[0176] Based on this description it is routine for a person skilled in the art to identify the active site loop (c) region in a subtilase and determine if the subtilase in question is within the scope of the invention. If a variant is constructed by site directed mutagenesis, it is of course known beforehand if the subtilase variant is within the scope of the invention.

[0177] A subtilase variant of the invention may be constructed by standard techniques known in the art such as by site-directed/random mutagenesis or by DNA shuffling of different subtilase sequences. See sections “PRODUCING A SUBTILASE VARIANT” and “Materials and Methods” for further details.

[0178] In further embodiments the invention relates to

[0179] (a) an isolated subtilase enzyme according to the invention, wherein said at least one inserted amino acid residue is selected from the group comprising: A, G, S, and T;

[0180] (b) an isolated subtilase enzyme according to the invention, wherein said at least one inserted amino acid residue is selected from the group of charged amino acid residues comprising: D, E, H, K, and R, more preferably D, E, K and R;

[0181] (c) an isolated subtilase enzyme according to the invention, wherein said at least one inserted amino acid residue is selected from the group of hydrophilic amino acid residues comprising: C, N, Q, S, and T, more preferably N, Q, S and T;

[0182] (d) an isolated subtilase enzyme according to the invention, wherein said at least one inserted amino acid residue is selected from the group of small hydrophobic amino acid residues comprising: A, G and V; or

[0183] (e) an isolated subtilase enzyme according to the invention, wherein said at least one inserted amino acid residue is selected from the group of large hydrophilic amino acid residues comprising: F, I, L, M, P, W and Y, more preferably F, I, L, M, and Y.

[0184] In a further embodiment, the invention relates to an isolated subtilase enzyme according to the invention, wherein said insertion comprises at least two amino acids, as compared to the corresponding active site loop region in subtilisin BPN′.

[0185] In further embodiments the invention relates to an isolated subtilase enzyme comprising at least one insertion, selected from the group comprising (in BASBPN numbering):

[0186] X125X{T,G,A,S}

[0187] X125X{D,E,K,R}

[0188] X125X{H,V,C,N,Q}

[0189] X125X{F,I,L,M,P,W,Y}

[0190] X126X{T,G,A,S}

[0191] X126X{D,E,K,R}

[0192] X126X{H,V,C,N,Q}

[0193] X126X{F,I,L,M,P,W,Y}

[0194] X127X{T,G,A,S}

[0195] X127X{D,E,K,R}

[0196] X127X{H,V,C,N,Q}

[0197] X127X{F,I,L,M,P,W,Y}

[0198] X128X{T,G,A,S}

[0199] X128X{D,E,K,R}

[0200] X128X{H,V,C,N,Q}

[0201] X128X{F,I,L,M,P,W,Y}

[0202] X129X{T,G,A,S}

[0203] X129X{D,E,K,R}

[0204] X129X{H,V,C,N,Q}

[0205] X129X{F,I,L,M,P,W,Y}

[0206] X130X{T,G,A,S}

[0207] X130x{D,E,K,R}

[0208] X130x{H,V,C,N,Q}

[0209] X130X{F,I,L,M,P,W,Y}

[0210] X131X{T,G,A,S}

[0211] X131x{D,E,K,R}

[0212] X131X{H,V,C,N,Q}

[0213] X131X{F,I,L,M,P,W,Y}

[0214] X132X{T,G,A,S}

[0215] X132X{D,E,K,R}

[0216] X132X{H,V,C,N,Q}

[0217] X132X{F,I,L,M,P,W,Y}

[0218] or more specific for subtilisin 309 and closely related subtilases, such as BAALKP, BLSUBL, and BSKSMK

[0219] S125SA

[0220] S125ST

[0221] S125SG

[0222] S125SS

[0223] S125SD

[0224] S125SE

[0225] S125SK

[0226] S125SR

[0227] S125SH

[0228] S125SV

[0229] S125SC

[0230] S125SN

[0231] S125SQ

[0232] S125SF

[0233] S125SI

[0234] S125SL

[0235] S125SM

[0236] S125SP

[0237] S125SW

[0238] S125SY

[0239] L126LA

[0240] L126LT

[0241] L126LG

[0242] L126LS

[0243] L126LD

[0244] L126LE

[0245] L126LK

[0246] L126LR

[0247] L126LH

[0248] L126LV

[0249] L126LC

[0250] L126LN

[0251] L126LQ

[0252] L126LF

[0253] L126LI

[0254] L126LL

[0255] L126LM

[0256] L126LP

[0257] L126LW

[0258] L126LY

[0259] G127GA

[0260] G127GT

[0261] G127GG

[0262] G127GS

[0263] G127GD

[0264] G127GE

[0265] G127GK

[0266] G127GR

[0267] G127GH

[0268] G127GV

[0269] G127GC

[0270] G127GN

[0271] G127GQ

[0272] G127GF

[0273] G127GI

[0274] G127GL

[0275] G127GM

[0276] G127GP

[0277] G127GW

[0278] G127GY

[0279] S128SA

[0280] S128ST

[0281] S128SG

[0282] S128SS

[0283] S128SD

[0284] S128SE

[0285] S128SK

[0286] S128SR

[0287] S128SH

[0288] S128SV

[0289] S128SC

[0290] S128SN

[0291] S128SQ

[0292] S128SF

[0293] S128SI

[0294] S128SL

[0295] S128SM

[0296] S128SP

[0297] S128SW

[0298] S128SY

[0299] P129PA

[0300] P129PT

[0301] P129PG

[0302] P129PS

[0303] P129PD

[0304] P129PE

[0305] P129PK

[0306] P129PR

[0307] P129PH

[0308] P129PV

[0309] P129PC

[0310] P129PN

[0311] P129PQ

[0312] P129PF

[0313] P129PI

[0314] P129PL

[0315] P129PM

[0316] P129PP

[0317] P129PW

[0318] P129PY

[0319] S130SA

[0320] S130ST

[0321] S130SG

[0322] S130SS

[0323] S130SD

[0324] S130SE

[0325] S130SK

[0326] S130SR

[0327] S130SH

[0328] S130SV

[0329] S130SC

[0330] S130SN

[0331] S130SQ

[0332] S130SF

[0333] S130SI

[0334] S130SL

[0335] S130SM

[0336] S130SP

[0337] S130SW

[0338] S130SY

[0339] P131PA

[0340] P131PT

[0341] P131PG

[0342] P131PS

[0343] P131PD

[0344] P131PE

[0345] P131PK

[0346] P131PR

[0347] P131PH

[0348] P131PV

[0349] P131PC

[0350] P131PN

[0351] P131PQ

[0352] P131PF

[0353] P131PI

[0354] P131PL

[0355] P131PM

[0356] P131PP

[0357] P131PW

[0358] P131PY

[0359] S132SA

[0360] S132ST

[0361] S132SG

[0362] S132SS

[0363] S132SD

[0364] S132SE

[0365] S132SK

[0366] S132SR

[0367] S132SH

[0368] S132SV

[0369] S132SC

[0370] S132SN

[0371] S132SQ

[0372] S132SF

[0373] S132SI

[0374] S132SL

[0375] S132SM

[0376] S132SP

[0377] S132SW

[0378] S132SY

[0379] Furthermore the invention relates to subtilases comprising multiple insertions at any of positions 125, 126, 127, 128, 129, 130, 131 and 132, or any of the following combinations:

[0380] G70C+S128A+P129T+S130T+P131STR

[0381] S106W+G127GS+P129A

[0382] S125SA+P129S

[0383] S125SSP+P129G

[0384] L126LA+P129S

[0385] G127GS+P129A+S130T

[0386] S128A+P131PTA

[0387] S128SA+P129S+S130T+S132A

[0388] S128SD+P129PR

[0389] S128ST+P129S

[0390] S128ST+P129S+P131A

[0391] S128STT+P129S+S130A+P131T

[0392] S128T+S130A+P131T+S132STP

[0393] P129G+S130SSP

[0394] P129PAH

[0395] P129PAS

[0396] P129PHG

[0397] P129S+S130SA

[0398] P129S+S130TP

[0399] S130SHQ

[0400] S130SLA+P131A

[0401] S130SNN+P131H

[0402] S130ST+Y167A

[0403] S130STT

[0404] It is well known in the art that a so-called conservative substitution of one amino acid residue to a similar amino acid residue is expected to produce only a minor change in the characteristic of the enzyme.

[0405] Table III below list groups of conservative amino acid substitutions.

4TABLE IIIConservative amino acid substitutionsCommon PropertyAmino AcidBasic (positive charge)K = lysineH = histidineAcidic (negative charge)E = glutamic acidD = aspartic acidPolarQ = glutamineN = asparaginesHydrophobicL = leucineI = isoleucineV = valineM = methionineAromaticF = phenylalanineW = tryptophanY = tyrosineSmallG = glycineA = alanineS = serineT = threonine

[0406] According to this principle, subtilase variants comprising conservative substitutions, such as G97A+A98AS+S99G and G97S+A98AT+S99A are expected to exhibit characteristics that are not drastically different from each other.

[0407] Based on the disclosed and/or exemplified subtilase variants herein, it is routine work for a person skilled in the art to identify suitable conservative modification(s) to these variants in order to obtain other subtilase variants exhibiting similarly improved wash-performance.

[0408] According to the invention, the subtilases of the invention belong to the subgroups I-S1 and I-S2, especially subgroup I-S2, both for isolating novel enzymes of the invention from nature or from the artificial creation of diversity, and for designing and producing is variants from a parent subtilase.

[0409] In relation to variants from subgroup I-S1, it is preferred to choose a parent subtilase from the group comprising BSS168 (BSSAS, BSAPRJ, BSAPRN, BMSAMP), BASBPN, BSSDY, BLSCAR (BLKERA, BLSCA1, BLSCA2, BLSCA3), BSSPRC, and BSSPRD, or functional variants thereof having retained the characteristic of sub-group I-S1.

[0410] In relation to variants from subgroup I-S2 it is preferred to choose a parent subtilase from the group comprising BSAPRQ, BLS147 (BSAPRM, BAH101), BLSAVI (BSKSMK, BAALKP, BLSUBL), BYSYAB, and BSAPRS, or functional variants thereof having retained the characteristic of sub-group I-S2.

[0411] In particular, said parent subtilase is BLSAVI (SAVINASE®, NOVO NORDISK A/S), and a preferred subtilase variant of the invention is accordingly a variant of SAVINASE®.

[0412] The present invention also comprises any of the above mentioned subtilases of the invention in combination with any other modification to the amino acid sequence thereof, especially combinations with other modifications known in the art to provide improved properties to the enzyme are envisaged. The art describes a number of subtilase variants with different improved properties and a number of those are mentioned in the “Background of the invention” section. Those references are disclosed here as references to identify a subtilase variant, which advantageously can be combined with a subtilase variant of the invention.

[0413] Such combinations comprise positions: 222 (improve oxidation stability), 218 (improves thermal stability), substitutions in the Ca-binding sites stabilizing the enzyme, e.g. position 76, and many other apparent from the prior art.

[0414] In another embodiment, a subtilase variant of the invention may advantageously be combined with one or more modification(s) in any of the positions:

[0415] 27, 36, 57, 76, 87, 97, 101, 104, 120, 123, 167, 170, 206, 218, 222, 224, 235 and 274.

[0416] Specifically the following BLSAVI, BLSUBL, BSKSMK, and BAALKP variants are considered appropriate for combination:

[0417] K27R, *36D, S57P, N76D, S87N, G97N, S101G, S103A, V104A, V104I, V104N, V104Y, H120D, N123S, Y167, R170, Q206E, N218S, M222S, M222A, T224S, K235L and T274A.

[0418] Furthermore variants comprising any of the variants K27R+V104Y+N123S+T274A, N76D+S103A+V104I, N76D+V104A, S87N+S101G+V104N, or S101G+V104N, other combinations of these mutations (K27R, N76D, S101G, V104A, V104N, V104Y, N123S, T274A) in combination with any one or more of the modification(s) mentioned above exhibit improved properties.

[0419] Even further subtilase variants of the main aspect(s) of the invention are preferably combined with one or more modification(s) in any of the positions 129, 131, 133 and 194, preferably as 129K, 131H, 133P, 133D and 194P modifications, and most preferably as P129K, P131H, A133P, A133D and A194P modifications. Any of those modification(s) are expected to provide a higher expression level of a subtilase variant of the invention in the production thereof.

[0420] Producing a Subtilase Variant

[0421] Many methods for cloning a subtilase of the invention and for introducing insertions into genes (e.g. subtilase genes) are well known in the art, cf. the references cited in the “BACKGROUND OF THE INVENTION” section.

[0422] In general standard procedures for cloning of genes and introducing insertions (random and/or site directed) into said genes may be used in order to obtain a subtilase variant of the invention. For further description of suitable techniques reference is made to the Examples and Sambrook et al. (1989) Molecular Cloning: A Laboratory Manual, Cold Spring Harbor Lab., Cold Spring Harbor, N.Y.; Ausubel, F. M. et al. (eds.) “Current protocols in Molecular Biology”. John Wiley and Sons, 1995; Harwood, C. R., and Cutting, S. M. (eds.) “Molecular Biological Methods for Bacillus”. John Wiley and Sons, 1990); and WO 96/34946.

[0423] Further a subtilase variant of the invention may be constructed by standard techniques for artificial creation of diversity, such as by DNA shuffling of different subtilase genes (WO 95/22625; Stemmer WPC, Nature, 370, 389-91 (1994)). DNA shuffling of e.g. the gene encoding SAVINASE® with one or more partial subtilase sequences identified in nature to comprise an active site loop (c) region longer than the active site loop (c) region of SAVINASE®, will after subsequent screening for improved wash performance variants, provide subtilase variants according to the invention.

[0424] Expression Vectors

[0425] A recombinant expression vector comprising a DNA construct encoding the enzyme of the invention may be any vector which may conveniently be subjected to recombinant DNA procedures.

[0426] The choice of vector will often depend on the host cell into which it is to be introduced. Thus, the vector may be an autonomously replicating vector, i.e. a vector which exists as an extrachromosomal entity, the replication of which is independent of chromosomal replication, e.g. a plasmid. Alternatively, the vector may be one that on introduction into a host cell is integrated into the host cell genome in part or in its entirety and replicated together with the chromosome(s) into which it has been integrated.

[0427] The vector is preferably an expression vector in which the DNA sequence encoding the enzyme of the invention is operably linked to additional segments required for transcription of the DNA. In general, the expression vector is derived from plasmid or viral DNA, or may contain elements of both. The term, “operably linked” indicates that the segments are arranged so that they function in concert for their intended purposes, e.g. transcription initiates in a promoter and proceeds through the DNA sequence coding for the enzyme.

[0428] The promoter may be any DNA sequence which shows transcriptional activity in the host cell of choice and may be derived from genes encoding proteins either homologous or heterologous to the host cell.

[0429] Examples of suitable promoters for use in bacterial host cells include the promoter of the Bacillus stearothermophilus maltogenic amylase gene, the Bacillus licheniformis alpha-amylase gene, the Bacillus amyloliquefaciens alpha-amylase gene, the Bacillus subtilis alkaline protease gene, or the Bacillus pumilus xylosidase gene, or the phage Lambda PR or PL promoters or the E. coli lac, trp or tac promoters.

[0430] The DNA sequence encoding the enzyme of the invention may also, if necessary, be operably connected to a suitable terminator.

[0431] The recombinant vector of the invention may further comprise a DNA sequence enabling the vector to replicate in the host cell in question.

[0432] The vector may also comprise a selectable marker, e.g. a gene the product of which complements a defect in the host cell, or a gene encoding resistance to e.g. antibiotics like kanamycin, chloramphenicol, erythromycin, tetracycline, spectinomycine, or the like, or resistance to heavy metals or herbicides.

[0433] To direct an enzyme of the present invention into the secretory pathway of the host cells, a secretory signal sequence (also known as is a leader sequence, prepro sequence or pre sequence) may be provided in the recombinant vector. The secretory signal sequence is joined to the DNA sequence encoding the enzyme in the correct reading frame. Secretory signal sequences are commonly positioned 5′ to the DNA sequence encoding the enzyme. The secretory signal sequence may be that normally associated with the enzyme or may be from a gene encoding another secreted protein.

[0434] The procedures used to ligate the DNA sequences coding for the present enzyme, the promoter and optionally the terminator and/or secretory signal sequence, respectively, or to assemble these sequences by suitable PCR amplification schemes, and to insert them into suitable vectors containing the information necessary for replication or integration, are well known to persons skilled in the art (cf., for instance, Sambrook et al., op.cit.).

[0435] Host Cell

[0436] The DNA sequence encoding the present enzyme introduced into the host cell may be either homologous or heterologous to the host in question. If homologous to the host cell, i.e. produced by the host cell in nature, it will typically be operably connected to another promoter sequence or, if applicable, another secretory signal sequence and/or terminator sequence than in its natural environment. The term “homologous” is intended to include a DNA sequence encoding an enzyme native to the host organism in question. The term “heterologous” is intended to include a DNA sequence not expressed by the host cell in nature. Thus, the DNA sequence may be from another organism, or it may be a synthetic sequence.

[0437] The host cell into which the DNA construct or the recombinant vector of the invention is introduced may be any cell which is capable of producing the present enzyme and includes bacteria, yeast, fungi and higher eukaryotic cells including plants.

[0438] Examples of bacterial host cells which, on cultivation, are capable of producing the enzyme of the invention are gram-positive bacteria such as strains ot Bacillus, such as strains or B. alkalophilus, B. amyloliquefaciens, B. brevis, B. circulans, B. coagulans, B. lautus, B. lentus, B. licheniformis, B. megaterium, B. stearothermophilus, B. subtilis, or B. thuringiensis, or strains of Streptomyces, such as S. lividans or S. murinus, or gram-negative bacteria such as Echerichia coli.

[0439] The transformation of the bacteria may be effected by protoplast transformation, electroporation, conjugation, or by using competent cells in a manner known per se (cf. Sambrook et al., supra).

[0440] When expressing the enzyme in bacteria such as E. coli, the enzyme may be retained in the cytoplasm, typically as insoluble granules (known as inclusion bodies), or may be directed to the periplasmic space by a bacterial secretion sequence. In the former case, the cells are lysed and the granules are recovered and denatured after which the enzyme is refolded by diluting the denaturing agent. In the latter case, the enzyme may be recovered from the periplasmic space by disrupting the cells, e.g. by sonication or osmotic shock, to release the contents of the periplasmic space and recovering the enzyme.

[0441] When expressing the enzyme in gram-positive bacteria such as Bacillus or Streptomyces strains, the enzyme may be retained in the cytoplasm, or may be directed to the extracellular medium by a bacterial secretion sequence. In the latter case, the enzyme may be recovered from the medium as described below.

[0442] Method of Producing Subtilase

[0443] The present invention provides a method of producing an isolated enzyme according to the invention, wherein a suitable host cell, which has been transformed with a DNA sequence encoding the enzyme, is cultured under conditions permitting the production of the enzyme, and the resulting enzyme is recovered from the culture.

[0444] When an expression vector comprising a DNA sequence encoding the enzyme is transformed into a heterologous host cell it is possible to enable heterologous recombinant production of the enzyme of the invention.

[0445] Thereby it is possible to make a highly purified subtilase composition, characterized in being free from homologous impurities.

[0446] In this context, homologous impurities mean any impurities (e.g. other polypeptides than the enzyme of the invention) which originate from the homologous cell where the enzyme of the invention is originally obtained from.

[0447] The medium used to culture the transformed host cells may be any conventional medium suitable for growing the host cells in question. The expressed subtilase may conveniently be secreted into the culture medium and may be recovered therefrom by well-known procedures including separating the cells from the medium by centrifugation or filtration, precipitating proteinaceous components of the medium by means of a salt such as ammonium sulfate, followed by chromatographic procedures such as ion exchange chromatography, affinity chromatography, or the like.

[0448] Use of a Subtilase Variant of the Invention

[0449] A subtilase protease variant of the invention may be used for a number of industrial applications, in particular within the detergent industry.

[0450] Further the invention relates to an enzyme composition, which comprises a subtilase variant of the invention.

[0451] A summary of preferred industrial applications and corresponding preferred enzyme compositions is provided below.

[0452] This summary is not in any way intended to be a complete list of suitable applications of subtilase variants of the invention. A subtilase variant of the invention may be used in other industrial applications known in the art for proteases, in particular subtilases.

[0453] Detergent Compositions Comprising the Mutant Enzymes

[0454] The present invention also relates to the use of the enzymes of the invention in cleaning and detergent compositions and compositions comprising the subtilisin enzymes. Such cleaning and detergent compositions are well described in the art, e.g., in WO 96/34946; WO 97/07202; and WO 95/30011.

[0455] Furthermore the example(s) below demonstrate the improvements in wash performance for a number of subtilase variants of the invention.

[0456] The detergent composition of the invention may for example be formulated as a hand or machine laundry detergent composition including a laundry additive composition suitable for pre-treatment of stained fabrics and a rinse added fabric softener composition, or be formulated as a detergent composition for use in general household hard surface cleaning operations, or be formulated for hand or machine dishwashing operations.

[0457] In a specific aspect, the invention provides a detergent additive comprising the enzyme of the invention. The detergent additive as well as the detergent composition may comprise one or more other enzymes such as an amylase, an arabinase, a carbohydrase, a cellulase, a cutinase, a galactanase, a lipase, a mannanase, an oxidase, e.g., a laccase and/or a peroxidase, a pectinase, a protease, or a xylanase.

[0458] In general the properties of the chosen enzyme(s) should be compatible with the selected detergent, (i.e. pH-optimum, compatibility with other enzymatic and non-enzymatic ingredients, etc.), and the enzyme(s) should be present in effective amounts.

[0459] Proteases: Suitable proteases include those of animal, vegetable or microbial origin. Microbial origin is preferred. Chemically modified or protein engineered mutants are included. The protease may be a serine protease or a metalloprotease, preferably an alkaline microbial protease or a trypsin-like protease. Examples of alkaline proteases are subtilisins, especially those derived from Bacillus, e.g., subtilisin Novo, subtilisin Carlsberg, subtilisin 309, subtilisin 147 and subtilisin 168 (described in WO 89/06279). Examples of trypsin-like proteases are trypsin (e.g. of porcine or bovine origin) and the Fusarium protease described in WO 89/06270 and WO 94/25583.

[0460] Examples of useful proteases are the variants described in WO 92/19729, WO 98/20115, WO 98/20116, and WO 98/34946, especially the variants with substitutions in one or more of the following positions:

[0461] 27, 36, 57, 76, 87, 97, 101, 104, 120, 123, 167, 170, 194, 206, 218, 222, 224, 235 and 274.

[0462] Preferred commercially available protease enzymes include Alcalase™, SAVINASE™, Primase™, Duralase™, Esperase™, and Kannase™ (Novo Nordisk A/S), Maxatase™, Maxacal™, Maxapem™, Properase™, Purafect™, Purafect OxP™, FN2™, and FN3™ (Genencor International Inc.).

[0463] Lipases: Suitable lipases include those of bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Examples of useful lipases include lipases from Humicola (synonym Thermomyces), e.g. from H. lanuginosa (T. lanuginosus) as described in EP 258 068 and EP 305 216 or from H. insolens as described in WO 96/13580, a Pseudomonas lipase, e.g. from P. alcaligenes or P. pseudoalcaligenes (EP 218 272), P. cepacia (EP 331 376), P. stutzeri (GB 1,372,034), P. fluorescens, Pseudomonas sp. strain SD 705 (WO 95/06720 and WO 96/27002), P. wisconsinensis (WO 96/12012), a Bacillus lipase, e.g. from B. subtilis (Dartois et al. (1993), Biochemica et Biophysica Acta, 1131, 253-360), B. stearothermophilus (JP 64/744992) or B. pumilus (WO 91/16422).

[0464] Other examples are lipase variants such as those described in WO 92/05249, WO 94/01541, EP 407 225, EP 260 105, WO 95/35381, WO 96/00292, WO 95/30744, WO 94/25578, WO 95/14783, WO 95/22615, WO 97/04079 and WO 97/07202.

[0465] Preferred commercially available lipase enzymes include Lipolase™ and Lipolase Ultra™ (Novo Nordisk A/S).

[0466] Amylases: Suitable amylases (alpha and/or beta) include those of bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Amylases include, for example, alpha-amylases obtained from Bacillus, e.g. a special strain of B. licheniformis, described in more detail in GB 1,296,839.

[0467] Examples of useful amylases are the variants described in WO 94/02597, WO 94/18314, WO 96/23873, and WO 97/43424, especially the variants with substitutions in one or more of the following positions:

[0468] 15, 23, 105, 106, 124, 128, 133, 154, 156, 181, 188, 190, 197, 202, 208, 209, 243, 264, 304, 305, 391, 408, and 444.

[0469] Commercially available amylases are Duramyl™, Termamyl™, Fungamyl™ and BAN™ (Novo Nordisk A/S), Rapidase™ and Purastar™ (from Genencor International Inc.).

[0470] Cellulases: Suitable cellulases include those of bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Suitable cellulases include cellulases from the genera Acremonium, Bacillus, Humicola, Fusarium, Pseudomonas, or Thielavia, e.g. the fungal cellulases produced from Humicola insolens, Myceliophthora thermophila and Fusarium oxysporum disclosed in U.S. Pat. No. 4,435,307, U.S. Pat. No.5,648,263, U.S. Pat. No. 5,691,178, U.S. Pat. No. 5,776,757 and WO 89/09259.

[0471] Especially suitable cellulases are the alkaline or neutral cellulases having color care benefits. Examples of such cellulases are cellulases described in EP 0 495 257, EP 0 531 372, WO 96/11262, WO 96/29397, WO 98/08940. Other examples are cellulase variants such as those described in WO 94/07998, EP 0 531 315, U.S. Pat. No. 5,457,046, U.S. Pat. No. 5,686,593, U.S. Pat. No. 5,763,254, WO 95/24471, WO 98/12307 and PCT/DK98/00299.

[0472] Commercially available cellulases include Celluzyme™, and Carezyme™ (Novo Nordisk A/S), Clazinase™, and Puradax HA™ (Genencor International Inc.), and KAC-500(B)™ (Kao Corporation).

[0473] Peroxidases/Oxidases: Suitable peroxidases/oxidases include those of plant, bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Examples of useful peroxidases include peroxidases from Coprinus, e.g. from C. cinereus, and variants thereof as those described in WO 93/24618, WO 95/10602, and WO 98/15257.

[0474] Commercially available peroxidases include Guardzyme™ (Novo Nordisk A/S).

[0475] The detergent enzyme(s) may be included in a detergent composition by adding separate additives containing one or more enzymes, or by adding a combined additive comprising all of these enzymes. A detergent additive of the invention, i.e. a separate additive or a combined additive, can be formulated e.g. as a granulate, a liquid, a slurry, etc. Preferred detergent additive formulations are granulates, in particular non-dusting granulates, liquids, in particular stabilized liquids, or slurries.

[0476] Non-dusting granulates may be produced, e.g., as disclosed in U.S. Pat. Nos. 4,106,991 and 4,661,452 and may optionally be coated by methods known in the art. Examples of waxy coating materials are poly(ethylene oxide) products (polyethyleneglycol, PEG) with mean molar weights of 1000 to 20000; ethoxylated nonylphenols having from 16 to 50 ethylene oxide units; ethoxylated fatty alcohols in which the alcohol contains from 12 to 20 carbon atoms and in which there are 15 to 80 ethylene oxide units; fatty alcohols; fatty acids; and mono- and di- and triglycerides of fatty acids. Examples of film-forming coating materials suitable for application by fluid bed techniques are given in GB 1483591. Liquid enzyme preparations may, for instance, be stabilized by adding a polyol such as propylene glycol, a sugar or sugar alcohol, lactic acid or boric acid according to established methods. Protected enzymes may be prepared according to the method disclosed in EP 238,216.

[0477] The detergent composition of the invention may be in any convenient form, e.g., a bar, a tablet, a powder, a granule, a paste or a liquid. A liquid detergent may be aqueous, typically containing up to 70% water and 0-30% organic solvent, or non-aqueous.

[0478] The detergent composition comprises one or more surfactants, which may be non-ionic including semi-polar and/or anionic and/or cationic and/or zwitterionic. The surfactants are typically present at a level of from 0.1% to 60% by weight.

[0479] When included therein the detergent will usually contain from about 1% to about 40% of an anionic surfactant such as linear alkylbenzenesulfonate, alpha-olefinsulfonate, alkyl sulfate (fatty alcohol sulfate), alcohol ethoxysulfate, secondary alkanesulfonate, alpha-sulfo fatty acid methyl ester, alkyl- or alkenylsuccinic acid or soap.

[0480] When included therein the detergent will usually contain from about 0.2% to about 40% of a non-ionic surfactant such as alcohol ethoxylate, nonylphenol ethoxylate, alkylpolyglycoside, alkyldimethylamineoxide, ethoxylated fatty acid monoethanolamide, fatty acid monoethanolamide, polyhydroxy alkyl fatty acid amide, or N-acyl N-alkyl derivatives of glucosamine (“glucamides”).

[0481] The detergent may contain 0-65% of a detergent builder or complexing agent such as zeolite, diphosphate, triphosphate, phosphonate, carbonate, citrate, nitrilotriacetic acid, ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, alkyl- or alkenylsuccinic acid, soluble silicates or layered silicates (e.g. SKS-6 from Hoechst).

[0482] The detergent may comprise one or more polymers. Examples are carboxymethylcellulose, poly(vinylpyrrolidone), poly (ethylene glycol), poly(vinyl alcohol), poly(vinylpyridine-N-oxide), poly(vinylimidazole), polycarboxylates such as polyacrylates, maleic/acrylic acid copolymers and lauryl methacrylate/acrylic acid copolymers.

[0483] The detergent may contain a bleaching system that may comprise a H2O2 source such as perborate or percarbonate which may be combined with a peracid-forming bleach activator such as tetraacetylethylenediamine or nonanoyloxybenzenesulfonate. Alternatively, the bleaching system may comprise peroxyacids of e.g. the amide, imide, or sulfone type.

[0484] The enzyme(s) of the detergent composition of the invention may be stabilized using conventional stabilizing agents, e.g., a polyol such as propylene glycol or glycerol, a sugar or sugar alcohol, lactic acid, boric acid, or a boric acid derivative, e.g., an aromatic borate ester, or a phenyl boronic acid derivative such as 4-formylphenyl boronic acid, and the composition may be formulated as described in e.g. WO 92/19709 and WO 92/19708.

[0485] The detergent may also contain other conventional detergent ingredients such as e.g. fabric conditioners including clays, foam boosters, suds suppressors, anti-corrosion agents, soil-suspending agents, anti-soil redeposition agents, dyes, bactericides, optical brighteners, hydrotropes, tarnish inhibitors, or perfumes.

[0486] It is at present contemplated that in the detergent compositions any enzyme, in particular the enzyme of the invention, may be added in an amount corresponding to 0.01-100 mg of enzyme protein per liter of wash liquor, preferably 0.05-5 mg of enzyme protein per liter of wash liquor, in particular 0.1-1 mg of enzyme protein per liter of wash liquor.

[0487] The enzyme of the invention may additionally be incorporated in the detergent formulations disclosed in WO 97/07202 which is hereby incorporated as reference.

[0488] Leather Industry Applications

[0489] A subtilase of the invention may be used in the leather industry, in particular for use in depilation of skins.

[0490] In said application a subtilase variant of the invention is preferably used in an enzyme composition which further comprises another protease.

[0491] For a more detailed description of suitable other proteases see section relating to suitable enzymes for use in a detergent composition (vide supra).

[0492] Wool Industry Applications

[0493] A subtilase of the invention may be used in the wool industry, in particular for use in cleaning of clothes comprising wool.

[0494] In said application a subtilase variant of the invention is preferably used in an enzyme composition which further comprises another protease.

[0495] For a more detailed description of suitable other proteases see section relating to suitable enzymes for use in a detergent composition (vide supra).

[0496] The invention is described in further detail in the following 1 5 examples which are not in any way intended to limit the scope of the invention as claimed.

[0497] Materials and Methods

[0498] Strains:

[0499]

B. subtilis
DN1885 (Diderichsen et al., 1990).

[0500]

B. lentus
309 and 147 are specific strains of Bacillus lentus, deposited with the NCIB and accorded the accession numbers NCIB 10309 and 10147, and described in U.S. Pat. No. 3,723,250, which is incorporated herein by reference.

[0501]

E. coli
MC 1000 (M. J. Casadaban and S. N. Cohen (1980); J. Mol. Biol. 138 179-207), was made r−,m+ by conventional methods and is also described in U.S. patent application Ser. No. 039,298.

[0502] Plasmids:

[0503] pJS3: E. coli-B. subtilis shuttle vector containing a synthetic gene encoding for subtilase 309. (Described by Jacob Schiødt et al. in Protein and Peptide letters 3:39-44 (1996)).

[0504] pSX222: B. subtilis expression vector (Described in WO 96/34946).

[0505] General Molecular Biology Methods:

[0506] Unless otherwise mentioned the DNA manipulations and transformations were performed using standard methods of molecular biology (Sambrook et al. (1989) Molecular cloning: A Laboratory Manual, Cold Spring Harbor Lab., Cold Spring Harbor, N.Y.; Ausubel, F. M. et al. (eds.) “Current protocols in Molecular Biology”. John Wiley and Sons, 1995; Harwood, C. R., and Cutting, S. M. (eds.) “Molecular Biological Methods for Bacillus”. John Wiley and Sons, 1990).

[0507] Enzymes for DNA manipulations were used according to the specifications of the suppliers.

[0508] Enzymes for DNA Manipulations

[0509] Unless otherwise mentioned all enzymes for DNA manipulations, such as e.g. restiction endonucleases, ligases etc., are obtained from New England Biolabs, Inc.

[0510] Proteolytic Activity

[0511] In the context of this invention proteolytic activity is expressed in Kilo NOVO Protease Units (KNPU). The activity is determined relative to an enzyme standard (SAVINASE®), and the determination is based on the digestion of a dimethyl casein (DMC) solution by the proteolytic enzyme at standard conditions, i.e. 50° C., pH 8.3, 9 min. reaction time, 3 min. measuring time. A folder AF 220/1 is available upon request to Novo Nordisk A/S, Denmark, which folder is hereby incorporated by reference.

[0512] A GU is a Glycine Unit, defined as the proteolytic enzyme activity which, under standard conditions, during a 15 minute incubation at 40° C., with N-acetyl casein as substrate, produces an amount of NH2-group equivalent to 1 mmole of glycine.

[0513] Protease activity can also be measured using the PNA assay, with succinyl-alanine-alanine-proline-phenylalanine-paranitrophenol as the substrate. The PNA assay is further described in Rothgeb, T. M., Goodlander, B. D., Garrison, P. H., and Smith, L. A., Journal of American Oil Chemists' Society (1988).

[0514] Fermentation:

[0515] Fermentations for the production of subtilase enzymes were performed at 30° C. on a rotary shaking table (300 r.p.m.) in 500 ml baffled Erlenmeyer flasks containing 100 ml BPX medium for 5 days.

[0516] Consequently in order to make an e.g. 2 liter broth 20 Erlenmeyer flasks were fermented simultaneously.

[0517] Media:

5BPX Medium Composition (per liter)Potato starch100 g Ground barley50 gSoybean flour20 gNa2HPO4 × 12 H2O 9 gPluronic0.1 g Sodium caseinate10 g

[0518] The starch in the medium is liquefied with alpha-amylase and the medium is sterilized by heating at 120° C. for 45 minutes. After sterilization the pH of the medium is adjusted to 9 by addition of NaHCO3 to 0.1 M.

EXAMPLE 1

Construction and Expression of Enzyme Variants

[0519] Site-Directed Mutagenesis:

[0520] Subtilase 309 site-directed variants of the invention comprising specific insertions in the active site loop (c) region were made by traditional cloning of DNA fragments (Sambrook et al., Molecular Cloning: A Laboratory Manual, 2nd Ed., Cold Spring Harbor, 1989) produced by PCR of oligos containing the desired insertions (see below).

[0521] The template plasmid DNA was pJS3, or an analogue of this containing a variant of subtilase 309.

[0522] Insertions were introduced by oligo directed mutagenesis to construct DNA sequences encoding subtilase 309 variants.

[0523] DNA encoding subtilase 309 variants was transformed into E. coli. DNA purified from an overnight culture of these transformants was transformed into B. subtilis by restriction endonuclease digestion, purification of DNA fragments, ligation, transformation of B. subtilis. Transformation of B. subtilis was performed as described by Dubnau et al., J. Mol. Biol., 56, 209-221 (1971).

[0524] Localized Random Mutagenesis in Order to Insert Random Insertions in a Localized Region:

[0525] The overall strategy used to perform localized random mutagenesis was:

[0526] A mutagenic primer (oligonucleotide) corresponding to the DNA sequence flanking the site of insertion, separated by the DNA base pairs defining the insertion, was synthesized.

[0527] Subsequently, the resulting mutagenic primer was used in a PCR reaction with a suitable opposite primer. The resulting PCR fragment was purified and digested by endonucleases and cloned into the E. coli-B. subtilis shuttle vector (see below).

[0528] Following this strategy a localized random library was constructed in SAVINASE wherein insertions were introduced in the active site loop region.

[0529] The mutations were introduced by mutagenic primers, so that all amino acids were represented (N=25% of A, T, C, and G; whereas S=50% C and G.

[0530] For insertions between positions 125 and 126, the mutagenic primer 5′-C AGC TTG CTC GAG TGT GGC ACT TGG CGA AGG GCT TCC TAA SNN ACT CAA ATT AGC AAC GTG CAT G -3′ (anti-sense) (SEQ ID NO: 7) containing the Xho I site in pJS3 was used in a PCR reaction with a suitable sense opposite primer, situated upstream the Hind III site in pJS3 (e.g. 5′- GTT GCT GTC CTC GAT ACA GGG ATA TCC ACT CAT CCA GAT CT-3′ (sense) (SEQ ID NO: 8)) with the plasmid pJS3 as template. For insertions between positions 126 and 127, the mutagenic primer 5′-C AGC TTG CTC GAG TGT GGC ACT TGG CGA AGG GCT TCC SNN TAA ACT CAA ATT AGC AAC GTG CAT G-3′ (anti-sense) (SEQ ID NO: 9) containing the Xho I site in pJS3 was used in a PCR reaction with a suitable sense opposite primer, situated upstream the Hind III site in pJS3 (e.g. 5′-GTT GCT GTC CTC GAT ACA GGG ATA TCC ACT CAT CCA GAT CT-3′ (sense) (SEQ ID NO: 10)) with the plasmid pJS3 as template. For insertions between positions 127 and 128, the mutagenic primer 5′-C AGC TTG CTC GAG TGT GGC ACT TGG CGA AGG GCT SNN TCC TAA ACT CAA ATT AGC AAC GTG CAT G-3′ (anti-sense) (SEQ ID NO: 11) containing the Xho I site in pJS3 was used in a PCR reaction with a suitable sense opposite primer, situated upstream the Hind III site in pJS3 (e.g. 5′-GTT GCT GTC CTC GAT ACA GGG ATA TCC ACT CAT CCA GAT CT-3′ (sense) (SEQ ID NO: 12)) with the plasmid pJS3 as template. For insertions between positions 128 and 129, the mutagenic primer 5′-C AGC TTG CTC GAG TGT GGC ACT TGG CGA AGG SNN GCT TCC TAA ACT CAA ATT AGC AAC GTG CAT G-3′ (anti-sense) (SEQ ID NO: 13) containing the Xho I site in pJS3 was used in a PCR reaction with a suitable sense opposite primer, situated upstream the Hind III site in pJS3 (e.g. 5′-GTT GCT GTC CTC GAT ACA GGG ATA TCC ACT CAT CCA GAT CT-3′ (sense) (SEQ ID NO: 14)) with the plasmid pJS3 as template. For insertions between positions 129 and 130, the mutagenic primer 5′-C AGC TTG CTC GAG TGT GGC ACT TGG CGA SNN AGG GCT TCC TAA ACT CAA ATT AGC AAC GTG CAT G-3′ (anti-sense) (SEQ ID NO: 15) containing the Xho I site in pJS3 was used in a PCR reaction with a suitable sense opposite primer, situated upstream the Hind III site in pJS3 (e.g. 5′-GTT GCT GTC CTC GAT ACA GGG ATA TCC ACT CAT CCA GAT CT-3′ (sense) (SEQ ID NO: 16)) with the plasmid pJS3 as template. For insertions between positions 130 and 131, the mutagenic primer 5′-C AGC TTG CTC GAG TGT GGC ACT TGG SNN CGA AGG GCT TCC TAA ACT CAA ATT AGC AAC GTG CAT G-3′ (anti-sense) (SEQ ID NO: 17) containing the Xho I site in pJS3 was used in a PCR reaction with a suitable sense opposite primer, situated upstream the Hind III site in pJS3 (e.g. 5′-GTT GCT GTC CTC GAT ACA GGG ATA TCC ACT CAT CCA GAT CT-3′ (sense) (SEQ ID NO: 18)) with the plasmid pJS3 as template. For insertions between positions 131 and 132, the mutagenic primer 5′-C AGC TTG CTC GAG TGT GGC ACT SNN TGG CGA AGG GCT TCC TAA ACT CAA ATT AGC AAC GTG CAT G-3′ (anti-sense) (SEQ ID NO: 19) containing the Xho I site in pJS3 was used in a PCR reaction with a suitable sense opposite primer, situated upstream the Hind III site in pJS3 (e.g. 5′-GTT GCT GTC CTC GAT ACA GGG ATA TCC ACT CAT CCA GAT CT-3′ (sense) (SEQ ID NO: 20)) with the plasmid pJS3 as template. For insertions between positions 132 and 133, the mutagenic primer 5′-C AGC TTG CTC GAG TGT GGC SNN ACT TGG CGA AGG GCT TCC TAA ACT CAA ATT AGC AAC GTG CAT G-3′ (anti-sense) (SEQ ID NO: 21) containing the Xho I site in pJS3 was used in a PCR reaction with a suitable sense opposite primer, situated upstream the Hind III site in pJS3 (e.g. 5′-GTT GCT GTC CTC GAT ACA GGG ATA TCC ACT CAT CCA GAT CT-3′ (sense) (SEQ ID NO: 22)) with the plasmid pJS3 as template.

[0531] The resulting PCR products were cloned into the pJS3 shuttle vector by using the restriction enzymes Xho I and Hind III.

[0532] The random library was transformed into E. coli by well known techniques.

[0533] The library prepared contained approximately 100,000 individual clones/library.

[0534] Ten randomly chosen colonies were sequenced to confirm the mutations designed.

[0535] In order to purify a subtilase variant of the invention, the B. subtilis pJS3 expression plasmid comprising a variant of the invention was transformed into a competent B. subtilis strain and was fermented as described above in a medium containing 10 micrograms/ml Chloramphenicol (CAM).

EXAMPLE 2

Purification of Enzyme Variants

[0536] This procedure relates to purification of a two liter scale fermentation for the production of the subtilases of the invention in a Bacillus host cell.

[0537] Approximately 1.6 liters of fermentation broth were centrifuged at 5000 rpm for 35 minutes in 1 liter beakers. The supernatants were adjusted to pH 6.5 using 10% acetic acid and filtered on Seitz Supra S100 filter plates.

[0538] The filtrates were concentrated to approximately 400 ml using an Amicon CH2A UF unit equipped with an Amicon S1Y10 UF cartridge. The UF concentrate was centrifuged and filtered prior to absorption at room temperature on a Bacitracin affinity column at pH 7. The protease was eluted from the Bacitracin column at room temperature using 25% 2-propanol and 1 M sodium chloride in a buffer solution with 0.01 dimethylglutaric acid, 0.1 M boric acid and 0.002 M calcium chloride adjusted to pH 7.

[0539] The fractions with protease activity from the Bacitracin purification step were combined and applied to a 750 ml Sephadex G25 column (5 cm dia.) equilibrated with a buffer containing 0.01 dimethylglutaric acid, 0.2 M boric acid and 0.002 M calcium chloride adjusted to pH 6.5.

[0540] Fractions with proteolytic activity from the Sephadex G25 column were combined and applied to a 150 ml CM Sepharose CL 6B cation exchange column (5 cm dia.) equilibrated with a buffer containing 0.01 M dimethylglutaric acid, 0.2 M boric acid, and 0.002 M calcium chloride adjusted to pH 6.5.

[0541] The protease was eluted using a linear gradient of 0-0.1 M sodium chloride in 2 liters of the same buffer (0-0.2 M sodium chloride in case of subtilisin 147).

[0542] In a final purification step protease containing fractions from the CM Sepharose column were combined and concentrated in an Amicon ultrafiltration cell equipped with a GR81PP membrane (from the Danish Sugar Factories Inc.).

[0543] By using the techniques of Example 1 for the construction and fermentation, and the above isolation procedure the following subtilisin 309 variants were produced and isolated:

6S125STS125SSS125SDS125SES125SPS125SGS125SHS125SIS125ST + Y167AS125SA + P129SS125SSP + P129GL126LTL126LSL126LDL126LEL126LPL126LGL126LHL126LIL126LT + Y167AL126LA + P129SG127GTG127GSG127GDG127GEG127GPG127GGG127GHG127GIG127GT + Y167AS106W + G127GS + P129AG127GS + P129A + S130TS128STS128SSS128SDS128SES128SPS128SGS128SHS128SIS128SAS128ST + P129S + P131AS128ST + P129SS128STT + P129S + S130A + P131TS128SA + P129S + S130T + S132AS128SD + P129PRP129PAP129PQP129PTP129PSP129PDP129PEP129PPP129PGP129PHP129PIP129PASP129PHGP129PAHS130SAS130STS130SSS130SDS130SES130SPS130SGS130SHS130SIS130ST + Y167AP129S + S130SAP129S + S130TPP129G + S130SSPS130SNN + P131HS130SLA + P131AS130STTS130SHQP131PAP131PTP131PSP131PDP131PEP131PPP131PGP131PHP131PIG70C + S128A + P129T + S130T + P131STRS128A + P131PTAS132SSS132SDS132SES132SPS132SGS132SHS132SIS132SAS132STS128T + S130A + P131T + S132STP

[0544] These variants were found to exhibit better wash performance than SAVINASE in a preliminary assay.

EXAMPLE 3

Wash Performance of Detergent Compositions Comprising Enzyme Variants

[0545] The following examples provide results from a number of washing tests that were conducted under the conditions indicated.

[0546] Mini Wash

[0547] Wash Conditions:

7EuropeDetergent 95USDetergent4 g/l3 g/l1 g/lDosageWash Temp30° C.15° C.25° C.Wash Time30 min15 min10 minWater hardness18° dH (Ca2+/Mg2+ =6° dH6° dH (Ca2+/Mg2+ =5:1)2:1)pHNot adjusted10.5Not adjustedEnzyme conc.1, 2, 5, 10, 301, 2, 5, 10, 30nMnMTest system150 ml glass10 nm150 ml glassbeakers with abeakers with astirring rodstirring rodTextile/volume5 textile pieces5 textile pieces5 textile pieces(Ø 2.5 cm) in 50(Ø 2.5 cm) in 50(Ø 2.5 cm) in 50ml detergentml detergentml detergentTest MaterialEMPA116EMPA117EMPA117

[0548] Detergents:

[0549] The detergents used were obtained from supermarkets in Denmark (OMO, datasheet ED-9745105) and the USA (Wisk, datasheet ED-9711893), respectively. Prior to use, all enzymatic activity in the detergents was inactivated by microwave treatment.

[0550] Swatches:

[0551] The swatches used were EMPA116 and EMPA117, obtained from EMPA Testmaterialen, Movenstrasse 12, CH-9015 St. Gall, Switzerland.

[0552] Reflectance

[0553] Measurement of reflectance (R) on the test material was done at 460 nm using a Macbeth ColorEye 7000 photometer. The measurements were done according to the manufacturer's protocol.

[0554] Evaluation

[0555] The evaluation of the wash performance of a subtilase is determined by either the improvement factor or the performance factor for the subtilase investigated.

[0556] The improvement factor, IFDose/response, is defined as the ratio between the slopes of the wash performance curves for a detergent containing the subtilase investigated and the same detergent containing a reference subtilase at the asymptotic concentration of the subtilase goes to zero

IF

Dose/response

=a/a

ref

[0557] The wash performance is calculated according to the formula I:

R=R

0
+(a deltaRmax c)/(deltaRmax+a c)

[0558] where

[0559] R is the wash performance in reflectance units; R0 is the intercept of the fitted curve with y-axis (blind); a is the slope of the fitted curve as c→0; c is the enzyme concentration; and deltaRmax is the theoretical maximal wash effect as c→∞.

[0560] The performance factor, P, is calculated according to formula II

P=
(Rvariant−Rblank)/(RSAVINASE−Rblank) (ii)

[0561] where

[0562] Rvariant is the reflectance of test material washed with 10 nM variant; RSAVINASE is the reflectance of test material washed with 10 nM SAVINASE; Rblank is the reflectance of test material washed with no enzyme.

8VariantIFDose/responsePUS (detergent: OMO, Swatch: EMPA116)P129G + S130SSP—1.2US (detergent: US Wisk, Swatch: EMPA117)G127GA—1.4G127GS + P129A + S130T—1.3S128SA—1.7S128SDR—1.2S128ST + P129S + P131A—1.3S128ST + P129S—1.3P129PT—1.3P129PA—1.7P129PS—1.3P129PQ—1.3P129PAS—1.3P129PHG—1.2P129PAH—1.3S130SA—1.4S130SST—1.4S130SHQ—1.4P129S + S130SA—1.3P129S + S130TP—1.3P129G + S130SSP—1.5S130SNN + P131H—1.3S130SLA + P131A—1.8P131PA—1.3S128A + P131PTA—1.3S132SA—1.4S132ST—1.5

[0563] The results show that subtilases of the inventions exhibit improved wash performance in comparison to SAVINASE®.

Claims

1. A modified subtilase comprising a mutation in an amino acid sequence of a subtilase, wherein the mutation is an insertion of at least one additional amino acid residue at position 125 of the active site loop (c) region corresponding to positions 125 to 132, wherein the positions are numbered according to the amino acid sequence of the mature subtilisin BPN′.
2. The modified subtilase of claim 1, wherein the one or more additional amino acid residues are selected from the group consisting of A, G, S and T.
3. The modified subtilase of claim 1, wherein the one or more additional amino acid residues are selected from the group consisting of D, E, H, K and R.
4. The modified subtilase of claim 1, wherein the one or more additional amino acid residues are selected from the group consisting of C, N, Q, S and T.
5. The modified subtilase of claim 1, wherein the one or more additional amino acid residues are selected from the group consisting of A, G and V.
6. The modified subtilase of claim 1, wherein the one or more additional amino acid residues are selected from the group consisting of F, I, L, M, P, W and Y.
7. The modified subtilase of claim 1, comprising S125ST+Y167A.
8. The modified subtilase of claim 1, wherein the mutation is an insertion of two or more amino acid residues at position 125.
9. The modified subtilase of claim 1, comprising at least one further mutation at one or more positions.
10. The modified subtilase of claim 9, wherein the one or more positions are selected from the group consisting of 27, 36, 57, 76, 87, 97, 101, 104, 120, 123, 167, 170, 206, 218, 222, 224, 235 and 274.
11. The modified subtilase of claim 10, wherein the at least one further mutation is selected from the group consisting of K27R, *36D, S57P, N76D, S87N, G97N, S101G, V104A, V104N, V104Y, H120D, N123S, Y167X, R170X, Q206E, N218S, M222A, M222S, T224S, K235L, and T274A.
12. The modified subtilase of claim 11, wherein the at least one further mutation is selected from the group consisting of K27R+V104Y+N123S+T274A, N76D+S103A+V104I, N76D+V104A, S87N+S101G+V104N, S101G+V104N, and any other combination of K27R, N76D, S101G, V104A, V104N, V104Y, N123S, and T274A.
13. The modified subtilase of claim 9, wherein the one or more positions are selected from the group consisting of 129, 131, 133 and 194.
14. The modified subtilase of claim 13, wherein the at least one further mutation is selected from the group consisting of P129K, P131H, A133D, A133P, and A194P.
15. The modified subtilase of claim 1, wherein the subtilase is a sub-group I-S1 subtilase.
16. The modified subtilase of claim 15, wherein the subtilase is selected from group consisting of subtilisin I168, subtilisin BPN′, subtilisin DY, and subtilisin Carlsberg.
17. The modified subtilase of claim 1, wherein the subtilase is a sub-group I-S2 subtilase.
18. The modified subtilase of claim 17, wherein the subtilase is subtilisin 147, subtilisin 309, subtilisin PB92, and subtilisin YaB.
19. A composition comprising a modified subtilase of claim 1 and a surfactant.
20. The composition of claim 19, further comprising an amylase, cellulase, cutinase, lipase, oxidoreductase, or another protease.
21. An isolated DNA sequence encoding a modified subtilase of claim 1.
22. An expression vector comprising an isolated DNA sequence of claim 21.
23. A microbial host cell transformed with an expression vector of claim 22.
24. A method for producing a modified subtilase, comprising (a) culturing a microbial host cell of claim 23 under conditions conducive to the expression and secretion of the modified subtilase, and (b) recovering the modified subtilase.
25. A modified subtilase comprising a mutation in an amino acid sequence of a subtilase, wherein the mutation is an insertion of at least one additional amino acid residue at position 126 of the active site loop (c) region corresponding to positions 125 to 132, wherein the positions are numbered according to the amino acid sequence of the mature subtilisin BPN′.
26. The modified subtilase of claim 25, wherein the one or more additional amino acid residues are selected from the group consisting of A, G, S and T.
27. The modified subtilase of claim 25, wherein the one or more additional amino acid residues are selected from the group consisting of D, E, H, K and R.
28. The modified subtilase of claim 25, wherein the one or more additional amino acid residues are selected from the group consisting of C, N, Q, S and T.
29. The modified subtilase of claim 25, wherein the one or more additional amino acid residues are selected from the group consisting of A, G and V.
30. The modified subtilase of claim 25, wherein the one or more additional amino acid residues are selected from the group consisting of F, I, L, M, P, W and Y.
31. The modified subtilase of claim 25, comprising L126LT+Y167A.
32. The modified subtilase of claim 25, wherein the mutation is an insertion of two or more amino acid residues at position 126.
33. The modified subtilase of claim 25, comprising at least one further mutation at one or more positions.
34. The modified subtilase of claim 33, wherein the one or more positions are selected from the group consisting of 27, 36, 57, 76, 87, 97, 101, 104, 120, 123, 167, 170, 206, 218, 222, 224, 235 and 274.
35. The modified subtilase of claim 34, wherein the at least one further mutation is selected from the group consisting of K27R, *36D, S57P, N76D, S87N, G97N, S101G, V104A, V104N, V104Y, H120D, N123S, Y167X, R170X, Q206E, N218S, M222A, M222S, T224S, K235L, and T274A.
36. The modified subtilase of claim 35, wherein the at least one further mutation is selected from the group consisting of K27R+V104Y+N123S+T274A, N76D+S103A+V104I, N76D+V104A, S87N+S101G+V104N, S101G+V104N, and any other combination of K27R, N76D, S101G, V104A, V104N, V104Y, N123S, and T274A.
37. The modified subtilase of claim 33, wherein the one or more positions are selected from the group consisting of 129, 131, 133 and 194.
38. The modified subtilase of claim 37, wherein the at least one further mutation is selected from the group consisting of P129K, P131H, A133D, A133P, and A194P.
39. The modified subtilase of claim 25, wherein the subtilase is a sub-group I-S1 subtilase.
40. The modified subtilase of claim 39, wherein the subtilase is selected from group consisting of subtilisin I168, subtilisin BPN′, subtilisin DY, and subtilisin Carlsberg.
41. The modified subtilase of claim 25, wherein the subtilase is a sub-group I-S2 subtilase.
42. The modified subtilase of claim 41, wherein the subtilase is subtilisin 147, subtilisin 309, subtilisin PB92, and subtilisin YaB.
43. A composition comprising a modified subtilase of claim 25 and a surfactant.
44. The composition of claim 43, further comprising an amylase, cellulase, cutinase, lipase, oxidoreductase, or another protease.
45. An isolated DNA sequence encoding a modified subtilase of claim 25.
46. An expression vector comprising an isolated DNA sequence of claim 45.
47. A microbial host cell transformed with an expression vector of claim 46.
48. A method for producing a modified subtilase, comprising (a) culturing a microbial host cell of claim 47 under conditions conducive to the expression and secretion of the modified subtilase, and (b) recovering the modified subtilase.
49. A modified subtilase comprising a mutation in an amino acid sequence of a subtilase, wherein the mutation is an insertion of at least one additional amino acid residue at position 127 of the active site loop (c) region corresponding to positions 125 to 132, wherein the positions are numbered according to the amino acid sequence of the mature subtilisin BPN′.
50. The modified subtilase of claim 49, wherein the one or more additional amino acid residues are selected from the group consisting of A, G, S and T.
51. The modified subtilase of claim 49, wherein the one or more additional amino acid residues are selected from the group consisting of D, E, H, K and R.
52. The modified subtilase of claim 49, wherein the one or more additional amino acid residues are selected from the group consisting of C, N, Q, S and T.
53. The modified subtilase of claim 49, wherein the one or more additional amino acid residues are selected from the group consisting of A, G and V.
54. The modified subtilase of claim 49, wherein the one or more additional amino acid residues are selected from the group consisting of F, I, L, M, P, W and Y.
55. The modified subtilase of claim 49, comprising S106W+G127GS+P129A, G127GA, G127GS+P129A+S130T, or G127GT+Y167A.
56. The modified subtilase of claim 49, wherein the mutation is an insertion of two or more amino acid residues at position 127.
57. The modified subtilase of claim 49, comprising at least one further mutation at one or more positions.
58. The modified subtilase of claim 57, wherein the one or more positions are selected from the group consisting of 27, 36, 57, 76, 87, 97, 101, 104, 120, 123, 167, 170, 206, 218, 222, 224, 235 and 274.
59. The modified subtilase of claim 58, wherein the at least one further mutation is selected from the group consisting of K27R, *36D, S57P, N76D, S87N, G97N, S101G, V104A, V104N, V104Y, H120D, N123S, Y167X, R170X, Q206E, N218S, M222A, M222S, T224S, K235L, and T274A.
60. The modified subtilase of claim 59, wherein the at least one further mutation is selected from the group consisting of K27R+V104Y+N123S+T274A, N76D+S103A+V104I, N76D+V104A, S87N+S101G+V104N, S101G+V104N, and any other combination of K27R, N76D, S101G, V104A, V104N, V104Y, N123S, and T274A.
61. The modified subtilase of claim 57, wherein the one or more positions are selected from the group consisting of 129, 131, 133 and 194.
62. The modified subtilase of claim 61, wherein the at least one further mutation is selected from the group consisting of P129K, P131H, A133D, A133P, and A194P.
63. The modified subtilase of claim 49, wherein the subtilase is a sub-group I-S1 subtilase.
64. The modified subtilase of claim 63, wherein the subtilase is selected from group consisting of subtilisin I168, subtilisin BPN′, subtilisin DY, and subtilisin Carlsberg.
65. The modified subtilase of claim 49, wherein the subtilase is a sub-group I-S2 subtilase.
66. The modified subtilase of claim 65, wherein the subtilase is subtilisin 147, subtilisin 309, subtilisin PB92, and subtilisin YaB.
67. A composition comprising a modified subtilase of claim 49 and a surfactant.
68. The composition of claim 67, further comprising an amylase, cellulase, cutinase, lipase, oxidoreductase, or another protease.
69. An isolated DNA sequence encoding a modified subtilase of claim 49.
70. An expression vector comprising an isolated DNA sequence of claim 69.
71. A microbial host cell transformed with an expression vector of claim 70.
72. A method for producing a modified subtilase, comprising (a) culturing a microbial host cell of claim 71 under conditions conducive to the expression and secretion of the modified subtilase, and (b) recovering the modified subtilase.
73. A modified subtilase comprising a mutation in an amino acid sequence of a subtilase, wherein the mutation is an insertion of at least one additional amino acid residue at position 128 of the active site loop (c) region corresponding to positions 125 to 132, wherein the positions are numbered according to the amino acid sequence of the mature subtilisin BPN′.
74. The modified subtilase of claim 73, wherein the one or more additional amino acid residues are selected from the group consisting of A, G, S and T.
75. The modified subtilase of claim 73, wherein the one or more additional amino acid residues are selected from the group consisting of D, E, H, K and R.
76. The modified subtilase of claim 73, wherein the one or more additional amino acid residues are selected from the group consisting of C, N, Q, S and T.
77. The modified subtilase of claim 73, wherein the one or more additional amino acid residues are selected from the group consisting of A, G and V.
78. The modified subtilase of claim 73, wherein the one or more additional amino acid residues are selected from the group consisting of F, I, L, M, P, W and Y.
79. The modified subtilase of claim 73, comprising S128SA, S128SA+P129S+S130T+S132A, S128SD+P129PR, S128ST+P129S, S128ST+P129S+P131A, S128ST+Y167A, or S128STT+P129S+S130A+P131T.
80. The modified subtilase of claim 73, wherein the mutation is an insertion of two or more amino acid residues at position 128.
81. The modified subtilase of claim 73, comprising at least one further mutation at one or more positions.
82. The modified subtilase of claim 81, wherein the one or more positions are selected from the group consisting of 27, 36, 57, 76, 87, 97, 101, 104, 120, 123, 167, 170, 206, 218, 222, 224, 235 and 274.
83. The modified subtilase of claim 82, wherein the at least one further mutation is selected from the group consisting of K27R, *36D, S57P, N76D, S87N, G97N, S101G, V104A, V104N, V104Y, H120D, N123S, Y167X, R170X, Q206E, N218S, M222A, M222S, T224S, K235L, and T274A.
84. The modified subtilase of claim 83, wherein the at least one further mutation is selected from the group consisting of K27R+V104Y+N123S+T274A, N76D+S103A+V104I, N76D+V104A, S87N+S101G+V104N, S101G+V104N, and any other combination of K27R, N76D, S101G, V104A, V104N, V104Y, N123S, and T274A.
85. The modified subtilase of claim 81, wherein the one or more positions are selected from the group consisting of 129, 131, 133 and 194.
86. The modified subtilase of claim 85, wherein the at least one further mutation is selected from the group consisting of P129K, P131H, A133D, A133P, and A194P.
87. The modified subtilase of claim 73, wherein the subtilase is a sub-group I-S1 subtilase.
88. The modified subtilase of claim 87, wherein the subtilase is selected from group consisting of subtilisin I168, subtilisin BPN′, subtilisin DY, and subtilisin Carlsberg.
89. The modified subtilase of claim 73, wherein the subtilase is a sub-group I-S2 subtilase.
90. The modified subtilase of claim 89, wherein the subtilase is subtilisin 147, subtilisin 309, subtilisin PB92, and subtilisin YaB.
91. A composition comprising a modified subtilase of claim 73 and a surfactant.
92. The composition of claim 91, further comprising an amylase, cellulase, cutinase, lipase, oxidoreductase, or another protease.
93. An isolated DNA sequence encoding a modified subtilase of claim 73.
94. An expression vector comprising an isolated DNA sequence of claim 93.
95. A microbial host cell transformed with an expression vector of claim 94.
96. A method for producing a modified subtilase, comprising (a) culturing a microbial host cell of claim 95 under conditions conducive to the expression and secretion of the modified subtilase, and (b) recovering the modified subtilase.
97. A modified subtilase comprising a mutation in an amino acid sequence of a subtilase, wherein the mutation is an insertion of at least one additional amino acid residue at position 129 of the active site loop (c) region corresponding to positions 125 to 132, wherein the positions are numbered according to the amino acid sequence of the mature subtilisin BPN′.
98. The modified subtilase of claim 97, wherein the one or more additional amino acid residues are selected from the group consisting of A, G, S and T.
99. The modified subtilase of claim 97, wherein the one or more additional amino acid residues are selected from the group consisting of D, E, H, K and R.
100. The modified subtilase of claim 97, wherein the one or more additional amino acid residues are selected from the group consisting of C, N, Q, S and T.
101. The modified subtilase of claim 97, wherein the one or more additional amino acid residues are selected from the group consisting of A, G and V.
102. The modified subtilase of claim 97, wherein the one or more additional amino acid residues are selected from the group consisting of F, I, L, M, P, W and Y.
103. The modified subtilase of claim 97, comprising S128SD+P129PR, P129PA, P129PAH, P129PAS, P129PHG, P129PQ, P129PS, P129PT, or P129PT+Y167A.
104. The modified subtilase of claim 97, wherein the mutation is an insertion of two or more amino acid residues at position 129.
105. The modified subtilase of claim 97, comprising at least one further mutation at one or more positions.
106. The modified subtilase of claim 105, wherein the one or more positions are selected from the group consisting of 27, 36, 57, 76, 87, 97, 101, 104, 120, 123, 167, 170, 206, 218, 222, 224, 235 and 274.
107. The modified subtilase of claim 106, wherein the at least one further mutation is selected from the group consisting of K27R, *36D, S57P, N76D, S87N, G97N, S101G, V104A, V104N, V104Y, H120D, N123S, Y167X, R170X, Q206E, N218S, M222A, M222S, T224S, K235L, and T274A.
108. The modified subtilase of claim 107, wherein the at least one further mutation is selected from the group consisting of K27R+V104Y+N123S+T274A, N76D+S103A+V104I, N76D+V104A, S87N+S101G+V104N, S101G+V104N, and any other combination of K27R, N76D, S101G, V104A, V104N, V104Y, N123S, and T274A.
109. The modified subtilase of claim 105, wherein the one or more positions are selected from the group consisting of 129, 131, 133 and 194.
110. The modified subtilase of claim 109, wherein the at least one further mutation is selected from the group consisting of P129K, P131H, A133D, A133P, and A194P.
111. The modified subtilase of claim 97, wherein the subtilase is a sub-group I-S1 subtilase.
112. The modified subtilase of claim 111, wherein the subtilase is selected from group consisting of subtilisin I168, subtilisin BPN′, subtilisin DY, and subtilisin Carlsberg.
113. The modified subtilase of claim 97, wherein the subtilase is a sub-group I-S2 subtilase.
114. The modified subtilase of claim 113, wherein the subtilase is subtilisin 147, subtilisin 309, subtilisin PB92, and subtilisin YaB.
115. A composition comprising a modified subtilase of claim 97 and a surfactant.
116. The composition of claim 115, further comprising an amylase, cellulase, cutinase, lipase, oxidoreductase, or another protease.
117. An isolated DNA sequence encoding a modified subtilase of claim 97.
118. An expression vector comprising an isolated DNA sequence of claim 117.
119. A microbial host cell transformed with an expression vector of claim 118.
120. A method for producing a modified subtilase, comprising (a) culturing a microbial host cell of claim 119 under conditions conducive to the expression and secretion of the modified subtilase, and (b) recovering the modified subtilase.
121. A modified subtilase comprising a mutation in an amino acid sequence of a subtilase, wherein the mutation is an insertion of at least one additional amino acid residue at position 130 of the active site loop (c) region corresponding to positions 125 to 132, wherein the positions are numbered according to the amino acid sequence of the mature subtilisin BPN′.
122. The modified subtilase of claim 121, wherein the one or more additional amino acid residues are selected from the group consisting of A, G, S and T.
123. The modified subtilase of claim 121, wherein the one or more additional amino acid residues are selected from the group consisting of D, E, H, K and R.
124. The modified subtilase of claim 121, wherein the one or more additional amino acid residues are selected from the group consisting of C, N, Q, S and T.
125. The modified subtilase of claim 121, wherein the one or more additional amino acid residues are selected from the group consisting of A, G and V.
126. The modified subtilase of claim 121, wherein the one or more additional amino acid residues are selected from the group consisting of F, I, L, M, P, W and Y.
127. The modified subtilase of claim 121, comprising P129G+S130SP, P129G+S130SSP, P129S+S130SA, P129S+S130TP, S130SA, S130SHQ, S130SLA+P131A, S130SNN+P131H, S130ST+Y167A, or S130STT.
128. The modified subtilase of claim 121, wherein the mutation is an insertion of two or more amino acid residues at position 130.
129. The modified subtilase of claim 121, comprising at least one further mutation at one or more positions.
130. The modified subtilase of claim 129, wherein the one or more positions are selected from the group consisting of 27, 36, 57, 76, 87, 97, 101, 104, 120, 123, 167, 170, 206, 218, 222, 224, 235 and 274.
131. The modified subtilase of claim 130, wherein the at least one further mutation is selected from the group consisting of K27R, *36D, S57P, N76D, S87N, G97N, S101G, V104A, V104N, V104Y, H120D, N123S, Y167X, R170X, Q206E, N218S, M222A, M222S, T224S, K235L, and T274A.
132. The modified subtilase of claim 131, wherein the at least one further mutation is selected from the group consisting of K27R+V104Y+N123S+T274A, N76D+S103A+V104I, N76D+V104A, S87N+S101G+V104N, S101G+V104N, and any other combination of K27R, N76D, S101G, V104A, V104N, V104Y, N123S, and T274A.
133. The modified subtilase of claim 129, wherein the one or more positions are selected from the group consisting of 129, 131, 133 and 194.
134. The modified subtilase of claim 133, wherein the at least one further mutation is selected from the group consisting of P129K, P131H, A133D, A133P, and A194P.
135. The modified subtilase of claim 121, wherein the subtilase is a sub-group I-S1 subtilase.
136. The modified subtilase of claim 135, wherein the subtilase is selected from group consisting of subtilisin I168, subtilisin BPN′, subtilisin DY, and subtilisin Carlsberg.
137. The modified subtilase of claim 121, wherein the subtilase is a sub-group I-S2 subtilase.
138. The modified subtilase of claim 137, wherein the subtilase is subtilisin 147, subtilisin 309, subtilisin PB92, and subtilisin YaB.
139. A composition comprising a modified subtilase of claim 121 and a surfactant.
140. The composition of claim 139, further comprising an amylase, cellulase, cutinase, lipase, oxidoreductase, or another protease.
141. An isolated DNA sequence encoding a modified subtilase of claim 121.
142. An expression vector comprising an isolated DNA sequence of claim 141.
143. A microbial host cell transformed with an expression vector of claim 142.
144. A method for producing a modified subtilase, comprising (a) culturing a microbial host cell of claim 143 under conditions conducive to the expression and secretion of the modified subtilase, and (b) recovering the modified subtilase.
145. A modified subtilase comprising a mutation in an amino acid sequence of a subtilase, wherein the mutation is an insertion of at least one additional amino acid residue at position 131 of the active site loop (c) region corresponding to positions 125 to 132, wherein the positions are numbered according to the amino acid sequence of the mature subtilisin BPN′.
146. The modified subtilase of claim 145, wherein the one or more additional amino acid residues are selected from the group consisting of A, G, S and T.
147. The modified subtilase of claim 145, wherein the one or more additional amino acid residues are selected from the group consisting of D, E, H, K and R.
148. The modified subtilase of claim 145, wherein the one or more additional amino acid residues are selected from the group consisting of C, N, Q, S and T.
149. The modified subtilase of claim 145, wherein the one or more additional amino acid residues are selected from the group consisting of A, G and V.
150. The modified subtilase of claim 145, wherein the one or more additional amino acid residues are selected from the group consisting of F, I, L, M, P, W and Y.
151. The modified subtilase of claim 145, comprising G70C+S128A+P129T+S130T+P131STR, S128A+P131PTA, P131PA, or P131PT+Y167A.
152. The modified subtilase of claim 145, wherein the mutation is an insertion of two or more amino acid residues at position 131.
153. The modified subtilase of claim 145, comprising at least one further mutation at one or more positions.
154. The modified subtilase of claim 153, wherein the one or more positions are selected from the group consisting of 27, 36, 57, 76, 87, 97, 101, 104, 120, 123, 167, 170, 206, 218, 222, 224, 235 and 274.
155. The modified subtilase of claim 154, wherein the at least one further mutation is selected from the group consisting of K27R, *36D, S57P, N76D, S87N, G97N, S101G, V104A, V104N, V104Y, H120D, N123S, Y167X, R170X, Q206E, N218S, M222A, M222S, T224S, K235L, and T274A.
156. The modified subtilase of claim 155, wherein the at least one further mutation is selected from the group consisting of K27R+V104Y+N123S+T274A, N76D+S103A+V104I, N76D+V104A, S87N+S101G+V104N, S101G+V104N, and any other combination of K27R, N76D, S101G, V104A, V104N, V104Y, N123S, and T274A.
157. The modified subtilase of claim 153, wherein the one or more positions are selected from the group consisting of 129, 131, 133 and 194.
158. The modified subtilase of claim 157, wherein the at least one further mutation is selected from the group consisting of P129K, P131H, A133D, A133P, and A194P.
159. The modified subtilase of claim 145, wherein the subtilase is a sub-group I-S1 subtilase.
160. The modified subtilase of claim 159, wherein the subtilase is selected from group consisting of subtilisin I168, subtilisin BPN′, subtilisin DY, and subtilisin Carlsberg.
161. The modified subtilase of claim 145, wherein the subtilase is a sub-group I-S2 subtilase.
162. The modified subtilase of claim 161, wherein the subtilase is subtilisin 147, subtilisin 309, subtilisin PB92, and subtilisin YaB.
163. A composition comprising a modified subtilase of claim 145 and a surfactant.
164. The composition of claim 163, further comprising an amylase, cellulase, cutinase, lipase, oxidoreductase, or another protease.
165. An isolated DNA sequence encoding a modified subtilase of claim 145.
166. An expression vector comprising an isolated DNA sequence of claim 165.
167. A microbial host cell transformed with an expression vector of claim 166.
168. A method for producing a modified subtilase, comprising (a) culturing a microbial host cell of claim 167 under conditions conducive to the expression and secretion of the modified subtilase, and (b) recovering the modified subtilase.
169. A modified subtilase comprising a mutation in an amino acid sequence of a subtilase, wherein the mutation is an insertion of at least one additional amino acid residue at position 132 of the active site loop (c) region corresponding to positions 125 to 132, wherein the positions are numbered according to the amino acid sequence of the mature subtilisin BPN′.
170. The modified subtilase of claim 169, wherein the one or more additional amino acid residues are selected from the group consisting of A, G, S and T.
171. The modified subtilase of claim 169, wherein the one or more additional amino acid residues are selected from the group consisting of D, E, H, K and R.
172. The modified subtilase of claim 169, wherein the one or more additional amino acid residues are selected from the group consisting of C, N, Q, S and T.
173. The modified subtilase of claim 169, wherein the one or more additional amino acid residues are selected from the group consisting of A, G and V.
174. The modified subtilase of claim 169, wherein the one or more additional amino acid residues are selected from the group consisting of F, I, L, M, P, W and Y.
175. The modified subtilase of claim 169, comprising S128T+S130A+P131T+S132STP, S132SA, S132ST, or S132ST+Y167A.
176. The modified subtilase of claim 169, wherein the mutation is an insertion of two or more amino acid residues at position 132.
177. The modified subtilase of claim 169, comprising at least one further mutation at one or more positions.
178. The modified subtilase of claim 177, wherein the one or more positions are selected from the group consisting of 27, 36, 57, 76, 87, 97, 101, 104, 120, 123, 167, 170, 206, 218, 222, 224, 235 and 274.
179. The modified subtilase of claim 178, wherein the at least one further mutation is selected from the group consisting of K27R, *36D, S57P, N76D, S87N, G97N, S101G, V104A, V104N, V104Y, H120D, N123S, Y167X, R170X, Q206E, N218S, M222A, M222S, T224S, K235L, and T274A.
180. The modified subtilase of claim 179, wherein the at least one further mutation is selected from the group consisting of K27R+V104Y+N123S+T274A, N76D+S103A+V104I, N76D+V104A, S87N+S101G+V104N, S101G+V104N, and any other combination of K27R, N76D, S101G, V104A, V104N, V104Y, N123S, and T274A.
181. The modified subtilase of claim 177, wherein the one or more positions are selected from the group consisting of 129, 131, 133 and 194.
182. The modified subtilase of claim 181, wherein the at least one further mutation is selected from the group consisting of P129K, P131H, A133D, A133P, and A194P.
183. The modified subtilase of claim 169, wherein the subtilase is a sub-group I-S1 subtilase.
184. The modified subtilase of claim 183, wherein the subtilase is selected from group consisting of subtilisin I168, subtilisin BPN′, subtilisin DY, and subtilisin Carlsberg.
185. The modified subtilase of claim 169, wherein the subtilase is a sub-group I-S2 subtilase.
186. The modified subtilase of claim 185, wherein the subtilase is subtilisin 147, subtilisin 309, subtilisin PB92, and subtilisin YaB.
187. A composition comprising a modified subtilase of claim 169 and a surfactant.
188. The composition of claim 187, further comprising an amylase, cellulase, cutinase, lipase, oxidoreductase, or another protease.
189. An isolated DNA sequence encoding a modified subtilase of claim 169.
190. An expression vector comprising an isolated DNA sequence of claim 189.
191. A microbial host cell transformed with an expression vector of claim 190.
192. A method for producing a modified subtilase, comprising (a) culturing a microbial host cell of claim 191 under conditions conducive to the expression and secretion of the modified subtilase, and (b) recovering the modified subtilase.
193. A subtilase comprising at least nine amino acid residues in the active site loop (c) region corresponding to positions 125 to 132, wherein the positions are numbered according to the amino acid sequence of the mature subtilisin BPN′.
194. The isolated subtilase enzyme of claim 193, wherein said subtilase enzyme is a constructed variant having at least one inserted amino acid residue in the active site loop (c) region of a precursor subtilase.
195. The isolated subtilase enzyme of claim 193 or 194 selected from the group comprising X125X{A,T,G,S}, X125X{D,E,K,R}, X125X{H,V,C,N,Q}, X125X{F,I,L,M,P,W,Y}, X126X{A,T,G,S}, X126X{D,E,K,R}, X126X{H,V,C,N,Q}, X126X{F,I,L,M,P,W,Y}, X127X{A,T,G,S}, X127X{D,E,K,R}, X127X{H,V,C,N,Q}, X127X{F,I,L,M,P,W,Y}, X128X{A,T,G,S}, X128X{D,E,K,R}, X128X{H,V,C,N,Q}, X128X{F,I,L,M,P,W,Y}, X129X{A,T,G,S}, X129X{D,E,K,R}, X129X{H,V,C,N,Q}, X129X{F,I,L,M,P,W,Y}, X130X{A,T,G,S}, X130X{D,E,K,R}, X130X{H,V,C,N,Q}, X130X{F,I,L,M,P,W,Y, X131X{A,T,G,S}, X131X{D,E,K,R}, X131X{H,V,C,N,Q}, X131X{F,I,L,M,P,W,Y}, X132X{A,T,G,S}, X132X{D,E,K,R}, X132X{H,V,C,N,Q}, and X132X{F,I,L,M,P,W,Y}.
196. The isolated subtilase enzyme of claim 195, wherein said at least one additional or inserted amino acid residue is A, G, S, or T.
197. The isolated subtilase enzyme of claim 195, wherein said at least one additional or inserted amino acid residue is D, E, H, K, or R, more preferably D, E, K or R.
198. The isolated subtilase enzyme of claim 195, wherein said at least one additional or inserted amino acid residue is C, N, Q, S or T, more preferably N, Q, S or T.
199. The isolated subtilase enzyme of claim 195, wherein said at least one additional or inserted amino acid residue is A, G or V.
200. The isolated subtilase enzyme of claim 195, wherein said at least one additional or inserted amino acid residue is F, I, L, M, P, W or Y, more preferably F, I, L, M, or Y.
201. The isolated subtilase enzyme of any of claims 193-200, wherein said at least one additional or inserted amino acid residue, comprises more than one additional or inserted amino acid residue in the active site loop (c) region.
202. The subtilase variant of any of claims 193-201, wherein said insertion(s) are combined with one or more further modification(s) in any other position(s).
203. The subtilase variant of claim 202, wherein said further modification(s) are in one or more of the positions 27, 36, 57, 76, 87, 97, 101, 104, 120, 123, 167, 170, 206, 218, 222, 224, 235 and 274.
204. The subtilase variant of any of claims 193-203, wherein said modification(s) is/are combined with modification(s) in one or more of the positions 129, 131, 133 and 194.
205. The subtilase of any of claims 193-204, wherein the subtilase, or if the subtilase is a variant the parent subtilase, belongs to the sub-group I-S1.
206. The subtilase of claim 205, wherein the parent subtilase is selected from the group comprising ABSS168, BASBPN, BSSDY, and BLSCAR, or functional variants thereof having retained the characteristic of sub-group I-S1.
207. The subtilase of any of claims 193-204, wherein the subtilase, or if the subtilase is a variant, the parent subtilase belongs to the sub-group I-S2.
208. The subtilase of claim 207, wherein the parent subtilase is selected from the group comprising BLS147, BLS309, BAPB92, TVTHER and BYSYAB, or functional variants thereof having retained the characteristic of sub-group I-S2.
209. The isolated subtilase enzyme of any of claims 193-208 selected from the group comprising S125SA, S125ST, S125SG, S125SS, S125SD, S125SE, S125SK, S125SR, S125SH, S125SV, S125SC, S125SN, S125SQ, S125SF, S125SI, S125SL, S125SM, S125SP, S125SW, S125SY. L126LA, L126LT, L126LG, L126LS, L126LD, L126LE, L126LK, L126LR, L126LH, L126LV, L126LC, L126LN, L126LQ, L126LF, L126LI, L126LL, L126LM, L126LP, L126LW, L126LY, G127GA, G127GT, G127GG, G127GS, G127GD, G127GE, G127GK, G127GR, G127GH, G127GV, G127GC, G127GN, G127GQ, G127GF, G127GI, G127GL, G127GM, G127GP, G127GW, G127GY, S128SA, S128ST, S128SG, S128SS, S128SD, S128SE, S128SK, S128SR, S128SH, S128SV, S128SC, S128SN, S128SQ, S128SF, S128SI, S128SL, S128SM, S128SP, S128SW, S128SY, P129PA, P129PT, P129PG, P129PS, P129PD, P129PE, P129PK, P129PR, P129PH, P129PV, P129PC, P129PN, P129PQ, P129PF, P129PI, P129PL, P129PM, P129PP, P129PW, P129PY, S130SA, S130ST, S130SG, S130SS, S130SD, S130SE, S130SK, S130SR, S130SH, S130SV, S130SC, S130SN, S130SQ, S130SF, S130SI, S130SL, S130SM, S130SP, S130SW, S130SY, P131PA, P131PT, P131PG, P131PS, P131PD, P131PE, P131PK, P131PR, P131PH, P131PV, P131PC, P131PN, P131PQ, P131PF, P131PI, P131PL, P131PM, P131PP, P131PW, P131PY, S132SA, S132ST, S132SG, S132SS, S132SD, S132SE, S132SK, S132SR, S132SH, S132SV, S132SC, S132SN, S132SQ, S132SF, S132SI, S132SL, S132SM, S132SP, S132SW, and S132SY.
210. The subtilase variant of any of claims 202-204, wherein said further modification(s) are selected from the group comprising K27R, *36D, S57P, N76D, S87N, G97N, S101G, V104A, V104N, V104Y, H120D, N123S, Y167X, R170X, Q206E, N218S, M222S, M222A, T224S, K235L, and T274A.
211. The subtilase variant of any of claims 202-204, wherein said further modification(s) are selected from the group comprising K27R+V104Y+N123S+T274A, N76D+S103A+V104I, N76D+V104A, S87N+S101G+V104N, S101G+V104N, or any other combination of K27R, N76D, S101G, V104A, V104N, V104Y, N123S, and T274A.
212. The subtilase variant of any of claims 202-204, wherein said further modification(s) are selected from the group further comprising P129K, P131H, A133D, A133P, and A194P.
213. The variant of any of claims 193-212, comprising: G70C+S128A+P129T+S130T+P131STR, S106W+G127GS+P129A, S125ST+Y167A, L126LT+Y167A, G127GA, G127GS+P129A+S130T, G127GT+Y167A, S128A+P131PTA, S128SA, S128SD+P129PR, S128SA+P129S+S130T+S132A, S128ST+P129S, S128ST+P129S+P131A, S128ST+Y167A, S128STT+P129S+S130A+P131T, S128T+S130A+P131T+S132STP, P129G+S130SSP, P129PA, P129PAH, P129PAS, P129G+S130SP, P129PHG, P129PQ, P129PS, P129PT, P129PT+Y167A, P129S+S130SA, P129S+S130TP, S130SA, S130SHQ, S130SLA+P131A, S130SNN+P131H, S130ST+Y167A, S130STT, P131PA, P131PT+Y167A, S132SA, S132ST, or S132ST+Y167A.
214. A subtilase belonging to the I-S1 sub-group having the amino acid sequence (SEQ ID NO: 23):
215. A subtilase belonging to the I-S2 sub-group having the amino acid sequence (SEQ ID NO: 24):
216. The subtilase variant of claim 214 or 215 wherein X in position 125a is selected from the group consisting of A, G, P, S, and T.
217. A subtilase belonging to the I-S1 sub-group having the amino acid sequence (SEQ ID NO: 25):
218. A subtilase belonging to the I-S2 sub-group having the amino acid sequence (SEQ ID NO: 26):
219. The subtilase variant of claim 217 or 218, wherein X in position 126a is selected from the group consisting of A, G, P, S, and T.
220. A subtilase belonging to the I-S1 sub-group having the amino acid sequence (SEQ ID NO: 27):
221. A subtilase belonging to the I-S2 sub-group having the amino acid sequence (SEQ ID NO: 28):
222. The subtilase variant of claim 220 or 221, wherein X in position 127a is selected from the group consisting of A, G, P, S, and T.
223. A subtilase belonging to the I-S1 sub-group having the amino acid sequence (SEQ ID NO: 29):
224. A subtilase belonging to the I-S2 sub-group having the amino acid sequence (SEQ ID NO: 30):
225. The subtilase variant of claims 223 or 224, wherein X in position 128a is selected from the group consisting of A, G, P, S, and T.
226. A subtilase belonging to the I-S1 sub-group having the amino acid sequence (SEQ ID NO: 31):
227. A subtilase belonging to the I-S2 sub-group having the amino acid sequence (SEQ ID NO: 32):
228. The modified subtilase ot claim 226 or 227, wherein X in position 129a is selected from the group consisting of A, G, P, S, and T.
229. A subtilase belonging to the I-S1 sub-group having the amino acid sequence (SEQ ID NO: 33):
230. A subtilase belonging to the I-S2 sub-group having the amino acid sequence (SEQ ID NO: 34):
231. The subtilase variant of claim 229 or 230, wherein X in position 130a is selected from the group consisting of A, G, P, S, and T.
232. A subtilase belonging to the I-S1 sub-group having the amino acid sequence (SEQ ID NO: 35):
233. A subtilase belonging to the I-S2 sub-group having the amino acid sequence (SEQ ID NO: 36):
234. The subtilase variant of claim 232 or 233, wherein X in position 131a is selected from the group consisting of A, G, P, S, and T.
235. A subtilase belonging to the I-S1 sub-group having the amino acid sequence (SEQ ID NO: 37):
236. A subtilase belonging to the I-S2 sub-group having the amino acid sequence (SEQ ID NO: 38):
237. The subtilase variant of claim 235 or 236, wherein X in position 132a is selected from the group consisting of A, G, P, S, and T.
238. An isolated DNA sequence encoding a subtilase or a subtilase variant of any of claims 193-237.
239. An expression vector comprising an isolated DNA sequence of claim 238.
240. A microbial host cell transformed with an expression vector of claim 239.
241. The microbial host of claim 240, which is a bacterium, preferably a Bacillus, especially B. lentus.
242. The microbial host of claim 240, which is a fungus or yeast, preferably a filamentous fungus, especially an Aspergillus.
243. A method for producing a subtilase or a subtilase variant of any of claims 193-237, wherein a host of any of claims 265-267 is cultured under conditions conducive to the expression and secretion of said variant, and the variant is recovered.
244. A composition comprising a subtilase or a subtilase variant of any of claims 193-237.
245. The composition of claim 244, which additionally comprises an amylase, a cellulase, a cutinase, a lipase, an oxidoreductase, or another protease.
246. The composition of claim 244 or 245, wherein the composition is a detergent composition.
247. Use of a subtilase or a subtilase variant of any of claims 193-237 or an enzyme composition of any of claims 244-246 in a laundry and/or a dishwash detergent.

Priority Claims (9)

Number	Date	Country
1332/97	Nov 1997	DK
1999 00709	May 1999	DK
1999 00708	May 1999	DK
1999 00707	May 1999	DK
1999 00712	May 1999	DK
1999 00711	May 1999	DK
1999 00710	May 1999	DK
1999 00705	May 1999	DK
1999 00704	May 1999	DK

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application is a continuation-in-part of Ser. Nos. 09/196,281, 09/574,463, 09/573,932, 09/574,143, 09/574,468, 09/574,033, 09/573,652, 09/573,298, and 09/573,299 filed Nov. 19, 1998, May 18, 2000, May 18, 2000, May 18, 2000, May 18, 2000, May 18, 2000, May 18, 2000, May 18, 2000, and May 18, 2000, respectively, and claims, under 35 U.S.C. 119, priority of Danish application nos. 1332/97, PA 1999 00709, PA 1999 00708, PA 1999 00707, PA 1999 00712, PA 1999 00711, PA 1999 00710, PA 1999 00705 and PA 1999 00704 filed Nov. 21, 1997, May 20, 1999, May 20, 1999, May 20, 1999, May 20, 1999, May 20, 1999, May 20, 1999, May 20, 1999, and May 20, 1999, respectively. Application Ser. No. 09/574,463 is a continuation-in-part of application Ser. No. 09/351,825 filed Jul. 12, 1999. Application Ser. No. 09/573,932 is a continuation-in-part of application Ser. No. 09/351,055 filed Jul. 12, 1999. Application Ser. No. 09/574,143 is a continuation-in-part of application Ser. No. 09/351,228 filed Jul. 12, 1999. Application Ser. No. 09/574,468 is a continuation-in-part of application Ser. No. 09/351,528 filed Jul. 12, 1999. Application Ser. No. 09/574,033 is a continuation-in-part of application Ser. No. 09/351,527 filed Jul. 12, 1999. Application Ser. No. 09/573,652 is a continuation-in-part of application Ser. No. 09/351,054 filed Jul. 12, 1999. Application Ser. No. 09/573,298 is a continuation-in-part of application Ser. No. 09/351,595 filed Jul. 12, 1999. Application Ser. No. 09/573,299 is a continuation-in-part of application Ser. No. 09/351,811 filed Jul. 12, 1999. The contents of all of the above applications is incorporated herein by reference.

Continuation in Parts (9)

	Number	Date	Country
Parent	09196281	Nov 1998	US
Child	10243576	Sep 2002	US
Parent	09574463	May 2000	US
Child	10243576	Sep 2002	US
Parent	09573932	May 2000	US
Child	10243576	Sep 2002	US
Parent	09574143	May 2000	US
Child	10243576	Sep 2002	US
Parent	09574468	May 2000	US
Child	10243576	Sep 2002	US
Parent	09574033	May 2000	US
Child	10243576	Sep 2002	US
Parent	09573652	May 2000	US
Child	10243576	Sep 2002	US
Parent	09573298	May 2000	US
Child	10243576	Sep 2002	US
Parent	09573299	May 2000	US
Child	10243576	Sep 2002	US

Subtilase enzymes

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CPC

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Abstract

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Priority Claims (9)

CROSS-REFERENCE TO RELATED APPLICATIONS

Continuation in Parts (9)