Lysophospholipase

Abstract

The inventors have isolated lysophospholipases from Aspergillus (A. niger and A. oryzae) having molecular masses of about 68 kDa and amino acid sequences of 600-604 amino acid residues. The novel lysophospholipases have only a limited homology to known amino acid sequences. The inventors also isolated genes encoding the novel enzymes and cloned them into E. coli strains.

Description

FIELD OF THE INVENTION

The present invention relates to lysophospholipases (LPL), methods of using and producing them, as well as nucleic acid sequences encoding them.

BACKGROUND OF THE INVENTION

Lysophospholipases (EC 3.1.1.5) are enzymes that can hydrolyze 2-lysophospholids to release fatty acid. They are known to be useful, e.g., for improving the filterability of an aqueous solution containing a starch hydrolysate, particularly a wheat starch hydrolysate (EP 219,269).

N. Masuda et al., Eur. J. Biochem., 202, 783-787 (1991) describe an LPL from Penicillium notatum as a glycoprotein having a molecular mass of 95 kDa and a published amino acid sequence of 603 amino acid residues. WO 98/31790 and EP 808,903 describe LPL from Aspergillus foetidus and Aspergillus niger, each having a molecular mass of 36 kDa and an amino acid sequence of 270 amino acids.

JP-A 10-155493 describes a phospholipase A1 from Aspergillus oryzae. The mature protein has 269 amino acids.

SUMMARY OF THE INVENTION

The inventors have isolated lysophospholipases from Aspergillus ( A. niger and A. oryzae ) having molecular masses of about 68 kDa and amino acid sequences of 600-604 amino acid residues. The novel lysophospholipases have only a limited homology to known amino acid sequences. The inventors also isolated genes encoding the novel enzymes and cloned them into E. coli strains.

Accordingly, the invention provides a lysophospholipase which may be a polypeptide having an amino acid sequence as the mature peptide shown in one of the following or which can be obtained therefrom by substitution, deletion, and/or insertion of one or more amino acids, particularly by deletion of 25-35 amino acids at the C-terminal:

SEQ ID NO: 2 (hereinafter denoted A. niger LLPL-1),

SEQ ID NO: 4 (hereinafter denoted A. niger LLPL-2),

SEQ ID NO: 6 (hereinafter denoted A. oryzae LLPL-1), or

SEQ ID NO: 8 (hereinafter denoted A. oryzae LLPL-2).

Further, the lysophospholipase of the invention may be a polypeptide encoded by the lysophospholipase encoding part of the DNA sequence cloned into a plasmid present in Echerichia coli deposit number DSM 13003, DSM 13004, DSM 13082 or DSM 13083.

The lysophospholipase may also be an analogue of the polypeptide defined above which:

i) has at least 70% homology with said polypeptide,

ii) is immunologically reactive with an antibody raised against said polypeptide in purified form,

iii) is an allelic variant of said polypeptide,

Finally, the phospholipase of the invention may be a polypeptide which is encoded by a nucleic acid sequence which hybridizes under high stringency conditions with one of the following sequences or its complementary strand or a subsequence thereof of at least 100 nucleotides:

nucleotides 109-1920 of SEQ ID NO: 1 (encoding A. niger LLPL-1),

nucleotides 115-1914 of SEQ ID NO: 3 (encoding A. niger LLPL-2),

nucleotides 70-1881 of SEQ ID NO: 5 (encoding A. oryzae LLPL-1), or

nucleotides 193-2001 of SEQ ID NO: 7 (encoding A. oryzae LLPL-2).

The nucleic acid sequence of the invention may comprise a nucleic acid sequence which encodes any of the lysophospholipases described above, or it may encode a lysophospholipase and comprise:

a) the lysophospholipase encoding part of the DNA sequence cloned into a plasmid present in Echerichia coli DSM 13003, DSM 13004, DSM 13082 or DSM 13083 (encoding A. niger LLPL-1, A. niger LLPL-2, A. oryzae LLPL-1 and A. oryzae LLPL-2, respectively),

b) the DNA sequence shown in SEQ ID NO: 1, 3, 5 or 7 (encoding A. niger LLPL-1, A. niger LLPL-2, A. oryzae LLPL-1 and A. oryzae LLPL-2, respectively), or

c) an analogue of the DNA sequence defined in a) or b) which

i) has at least 70% homology with said DNA sequence, or

ii) hybridizes at high stringency with said DNA sequence, its complementary strand or a subsequence thereof.

Other aspects of the invention provide a recombinant expression vector comprising the DNA sequence, and a cell transformed with the DNA sequence or the recombinant expression vector.

A comparison with full-length prior-art sequences shows that the mature amino acid sequences of the invention have 60-69% homology with LPL from Penicillium notatum (described above), and the corresponding DNA sequences of the invention show 63-68% homology with that of P. notatum LPL.

A comparison with published partial sequences shows that an expressed sequence tag (EST) from Aspergillus nidulans (GenBank AA965865) of 155 amino acid residues can be aligned with the mature A. oryzae LLPL-2 of the invention (604 amino acids) with a homology of 79%.

DETAILED DESCRIPTION OF THE INVENTION

Genomic DNA Source

Lysophospholipases of the invention may be derived from strains of Aspergillus, particularly strains of A. niger and A. oryzae, using probes designed on the basis of the DNA sequences in this specification.

Strains of Echerichia coli containing genes encoding lysophospholipase were deposited by the inventors under the terms of the Budapest Treaty with the DSMZ—Deutsche Sammlung von Microorganismen und Zellkulturen GmbH, Mascheroder Weg 1b, D-38124 Braunschweig DE as follows:

	Designation of	Accession
Source organism	lysophospholipase	number	Date deposited
A. niger	LLPL-1	DSM 13003	Aug. 18, 1999
A. niger	LLPL-2	DSM 13004	Aug. 18, 1999
A. oryzae	LLPL-1	DSM 13082	Oct. 8, 1999
A. oryzae	LLPL-2	DSM 13083	Oct. 8, 1999

C-terminal Deletion

The lysophospholipase may be derived from the mature peptide shown in SEQ ID NOS: 2, 4, 6 or 8 by deletion at the C-terminal to remove the ω site residue while preserving the lysophospholipase activity. The ω site residue is described in Yoda et al. Biosci. Biotechnol. Biochem. 64, 142-148, 2000, e.g. S577 of SEQ ID NO: 4. Thus, the C-terminal deletion may particularly consist of 25-35 amino acid residues.

A lysophospholipase with a C-terminal deletion may particularly be produced by expression in a strain of A. oryzae.

Properties of Lysophospholipase

The lysophospholipase of the invention is able to hydrolyze fatty acyl groups in lysophospholipid such as lyso-lecithin (Enzyme Nomenclature EC 3.1.1.5). It may also be able to release fatty acids from intact phospholipid (e.g. lecithin).

Recombinant Expression Vector

The expression vector of the invention typically includes control sequences encoding a promoter, operator, ribosome binding site, translation initiation signal, and, optionally, a selectable marker, a transcription terminator, a repressor gene or various activator genes. The vector may be an autonomously replicating vector, or it may be integrated into the host cell genome.

Production by Cultivation of Transformant

The lysophospholipase of the invention may be produced by transforming a suitable host cell with a DNA sequence encoding the phospholipase, cultivating the transformed organism under conditions permitting the production of the enzyme, and recovering the enzyme from the culture.

The host organism is preferably a eukaryotic cell, in particular a fungal cell, such as a yeast cell or a filamentous fungal cell, such as a strain of Aspergillus, Fusarium, Trichoderma or Saccharomyces, particularly A. niger, A. oryzae, F. graminearum, F. sambucinum, F. cerealis or S. cerevisiae, e.g. a glucoamylase-producing strain of A. niger such as those described in U.S. Pat. No. 3,677,902, or a mutant thereof. The production of the lysophospholipase in such host organisms may be done by the general methods described in EP 238,023 (Novo Nordisk), WO 96/00787 (Novo Nordisk) or EP 244,234 (Alko).

Hybridization

The hybridization is used to indicate that a given DNA sequence is analogous to a nucleotide probe corresponding to a DNA sequence of the invention. The hybridization conditions are described in detail below.

Suitable conditions for determining hybridization between a nucleotide probe and a homologous DNA or RNA sequence involves presoaking of the filter containing the DNA fragments or RNA to hybridize in 5×SSC (standard saline citrate) for 10 min, and prehybridization of the filter in a solution of 5×SSC (Sambrook et al. 1989), 5×Denhardt's solution (Sambrook et al. 1989), 0.5% SDS and 100 μg/ml of denatured sonicated salmon sperm DNA (Sambrook et al. 1989), followed by hybridization in the same solution containing a random-primed (Feinberg, A. P. and Vogelstein, B. (1983) Anal. Biochem. 132:6-13), 32 P-dCTP-labeled (specific activity>1×10 9 cpm/μg) probe for 12 hours at approx. 45° C. The filter is then washed two times for 30 minutes in 2×SSC, 0.5% SDS at a temperature of at least 55° C., more preferably at least 60° C., more preferably at least 65° C., even more preferably at least 70° C., especially at least 75° C.

Molecules to which the oligonucleotide probe hybridizes under these conditions are detected using a x-ray film.

Alignment and Homology

The lysophospholipase and the nucleotide sequence of the invention preferably have homologies to the disclosed sequences of at least 80%, particularly at least 90% or at least 95%, e.g. at least 98%.

For purposes of the present invention, alignments of sequences and calculation of homology scores were done using a full Smith-Waterman alignment, useful for both protein and DNA alignments. The default scoring matrices BLOSUM50 and the identity matrix are used for protein and DNA alignments respectively. The penalty for the first residue in a gap is −12 for proteins and −16 for DNA, while the penalty for additional residues in a gap is −2 for proteins and −4 for DNA. Alignment is from the FASTA package version v20u6 (W. R. Pearson and D. J. Lipman (1988), “Improved Tools for Biological Sequence Analysis”, PNAS 85:2444-2448, and W. R. Pearson (1990) “Rapid and Sensitive Sequence Comparison with FASTP and FASTA”, Methods in Enzymology, 183:63-98). Multiple alignments of protein sequences were done using “ClustalW” (Thompson, J. D., Higgins, D. G. and Gibson, T. J. (1994) CLUSTAL W: improving the sensitivity of progressive multiple sequence alignment through sequence weighting, positions-specific gap penalties and weight matrix choice. Nucleic Acids Research, 22:4673-4680). Multiple alignment of DNA sequences are done using the protein alignment as a template, replacing the amino acids with the corresponding codon from the DNA sequence.

Lysophospholipase Activity (LLU)

Lysophospholipase activity is measured using egg yolk L-α-lysolecithin as the substrate with a NEFA C assay kit.

20 μl of sample is mixed with 100 μl of 20 mM sodium acetate buffer (pH 4.5) and 100 μl of 1% L-α-lysolecithin solution, and incubated at 55° C. for 20 min. After 20 min, the reaction mixture is transferred to the tube containing 30 μl of Solution A in NEFA kit preheated at 37° C. After 10 min incubation at 37° C., 600 μl of Solution B in NEFA kit is added to the reaction mixture and incubated at 37° C. for 10 min. Activity is measured at 555 nm on a spectrophotometer. One unit of lysophospholipase activity (1 LLU) is defined as the amount of enzyme that can increase the A550 of 0.01 per minute at 55° C.

Use of Lysophospholipase

The lysophospholipase of the invention can be used in any application where it is desired to hydrolyze the fatty acyl group(s) of a phospholipid or lysophospholipid, such as lecithin or lyso-lecithin.

As an example, the lysophospholipase of the invention can be used in the preparation of dough, bread and cakes, e.g. to improve the elasticity of the bread or cake. Thus, the lysophospholipase can be used in a process for making bread, comprising adding the lysophospholipase to the ingredients of a dough, kneading the dough and baking the dough to make the bread. This can be done in analogy with U.S. Pat. No. 4,567,046 (Kyowa Hakko), JP-A 60-78529 (QP Corp.), JP-A 62-111629 (QP Corp.), JP-A 63-258528 (QP Corp.) or EP 426211 (Unilever).

The lysophospholipase of the invention can also be used to improve the filterability of an aqueous solution or slurry of carbohydrate origin by treating it with the lysophospholipase. This is particularly applicable to a solution or slurry containing a starch hydrolysate, especially a wheat starch hydrolysate since this tends to be difficult to filter and to give cloudy filtrates. The lysophospholipase may advantageously be used together with a beta-glucanase and/or a xylanase, e.g. as described in EP 219,269 (CPC International).

The lysophospholipase of the invention can be used in a process for reducing the content of phospholipid in an edible oil, comprising treating the oil with the lysophospholipase so as to hydrolyze a major part of the phospholipid, and separating an aqueous phase containing the hydrolyzed phospholipid from the oil. This process is applicable to the purification of any edible oil which contains phospholipid, e.g. vegetable oil such as soy bean oil, rape seed oil and sunflower oil. The process can be conducted according to principles known in the art, e.g. in analogy with U.S. Pat. No. 5,264,367 (Metaligesellschaft, Röhm); K. Dahlke & H. Buchold, INFORM, 6 (12), 1284-91 (1995); H. Buchold, Fat Sci. Technol., 95 (8), 300-304 (1993); JP-A 2-153997 (Showa Sangyo); or EP 654,527 (Metaligesellschaft, Röhm).

EXAMPLES

Materials and Methods

Methods

Unless otherwise stated, DNA manipulations and transformations were performed using standard methods of molecular biology as described in 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.

Enzymes

Enzymes for DNA manipulations (e.g. restriction endonucleases, ligases etc.) are obtainable from New England Biolabs, Inc. and were used according to the manufacturer's instructions.

Plasmids/vectors

pT7Blue (Invitrogen, Netherlands)

pUC19 (Genbank Accession #: X02514)

pYES 2.0 (Invitrogen, USA).

Microbial Strains

E. coli JM109 (TOYOBO, Japan)

E. coli DH12α (GIBCO BRL, Life Technologies, USA)

Aspergillus oryzae strain IFO 4177 is available from Institute for Fermentation, Osaka (IFO) Culture Collection of Microorganisms, 17-85, Juso-honmachi, 2-chome, Yodogawa-ku, Osaka 532-8686, Japan.

A. oryzae BECh-2 is described in Danish patent application PA 1999 01726. It is a mutant of JaL228 (described in WO 98/12300) which is a mutant of IFO 4177.

Reagents

NEFA test kit (Wako, Japan)

L-α-lysolecithin (Sigma, USA).

Media and Reagents

Cove: 342.3 g/L Sucrose, 20 ml/L COVE salt solution, 10 mM Acetamide, 30 g/L noble agar.

Cove-2: 30 g/L Sucrose, 20 ml/L COVE salt solution, 10 mM, Acetamide, 30 g/L noble agar.

Cove salt solution: per liter 26 g KCl, 26 g MgSO4-7aq, 76 g KH2PO4, 50 ml Cove trace metals.

Cove trace metals: per liter 0.04 g NaB4O7-10aq, 0.4 g CuSO4-5aq, 1.2 g FeSO4-7aq, 0.7 g MnSO4-aq, 0.7 g Na2MoO2-2aq, 0.7 g ZnSO4-7aq.

AMG trace metals: per liter 14.3 g ZnSO4-7aq, 2.5 g CuSO4-5aq, 0.5 g NiCl2, 13.8 g FeSO4, 8.5 g MnSO4, 3.0 g citric acid.

YPG: 4 g/L Yeast extract, 1 g/L KH2PO4, 0.5 g/L MgSO4-7aq, 5 g/L Glucose, pH 6.0.

STC: 0.8 M Sorbitol, 25 mM Tris pH 8, 25 mM CaCl2.

STPC: 40% PEG4000 in STC buffer.

Cove top agarose: 342.3 g/L Sucrose, 20 ml/L COVE salt solution, 10 mM Acetamide, 10 g/L low melt agarose.

MS-9: per liter 30 g soybean powder, 20 g glycerol, pH 6.0.

MDU-pH5: per liter 45 g maltose-1 aq, 7 g yeast extract, 12 g KH2PO4, 1 g MgSO4-7aq, 2 g K2SO4, 0.5 ml AMG trace metal solution and 25 g 2-morpholinoethanesulfonic acid, pH 5.0.

MLC: 40 g/L Glucose, 50 g/L Soybean powder, 4 g/L Citric acid, pH 5.0.

MU-1: 260 g/L Maltdextrin, 3 g/L MgSO4-7aq, 6 g/L K2SO4, 5 g/L KH2PO4, 0.5 ml/L AMG trace metal solution, 2 g/L Urea, pH 4.5.

Example 1

Cloning and Expression of LLPL-1 Gene from A. niger

Transformation in Aspergillus Strain

Aspergillus oryzae strain BECh-2 was inoculated to 100 ml of YPG medium and incubated for 16 hrs at 32° C. at 120 rpm. Pellets were collected and washed with 0.6 M KCl, and resuspended 20 ml 0.6 M KCl containing a commercial β-glucanase product (Glucanex, product of Novo Nordisk A/S) at the concentration of 30 μl/ml. Cultures were incubated at 32° C. at 60 rpm until protoplasts formed, then washed with STC buffer twice. The protoplasts were counted with a hematometer and resuspended in an 8:2:0.1 solution of STC:STPC:DMSO to a final concentration of 2.5×10e7 protoplasts/ml. About 3 μg of DNA was added to 100 μl of protoplasts solution, mixed gently and incubated on ice for 30 min. One ml of SPTC was added and incubated 30 min at 37° C. After the addition of 10 ml of 50° C. Cove top agarose, the reaction was poured onto Cove agar plate. Transformation plates were incubated at 32° C. for 5 days.

Preparation of a llp1 probe

A strain of Aspergillus niger was used as a genomic DNA supplier.

PCR reactions on Aspergillus niger genome DNA was done with the primers HU175 (SEQ ID NO: 9) and HU176 (SEQ ID NO: 10) designed based upon the alignment several lysophospholipases from Penicillium and Neurospora sp.

Reaction components (1 ng /μl of genomic DNA, 250 mM dNTP each, primer 250 nM each, 0.1 U/μl in Taq polymerase in 1×buffer (Roche Diagnostics, Japan)) were mixed and submitted for PCR under the following conditions.

	Step	Temperature	Time
	1	94° C.	2 min
	2	92° C.	1 min
	3	55° C.	1 min
	4	72° C.	1 min
	5	72° C.	10 min
	6	4° C.	forever
	Steps 2 to 4 were repeated 30 times.

Steps 2 to 4 were repeated 30 times.

The expected size, 1.0 kb fragment was gel-purified with QIA gel extraction kit (Qiagen, Germany) and ligated into a pT7Blue vector with ligation high (TOYOBO, Japan). The ligation mixture was transformed into E. coli JM109. The resultant plasmid mid (pHUda94) was sequenced and compared to the Penicillium lysophospholipase, showing that a clone encodes the internal part of the lysophospholipase.

Cloning of llpl-1 Gene

In order to clone the missing part of the lysophospholipase gene, a genomic restriction map was constructed by using the PCR fragment as probes to a Southern blot of Aspergillus niger DNA digested with seven restriction enzymes, separately and probed with 1.0 kb fragment encoding partial lysophospholipase from pHUda94.

A hybridized 4-6 kb Sphl fragment was selected for a llpl-1 gene subclone.

For construction of a partial genomic library of Aspergillus niger, the genomic DNA was digested with Sphl and run on a 0.7% agarose gel. DNA with a size between 4 to 6 kb was purified and cloned into pUC19 pretreated Sphl and BAP (Bacterial alkaline phosphatase). The sphl sub-library was made by transforming the ligated clones into E. coli DH12α cells. Colonies were grown on Hybond-N+ membranes (Amersham Pharmacia Biotech, Japan) and hybridized to DIG-labelled (Non-radio isotope) 1.0 kb fragment from pHUda94.

Positive colonies were picked up and their inserts were checked by PCR. Plamids from selected colonies were prepared and sequenced revealing 5 kb Sphl fragment were containing whole llpl-1 gene.

Expression of llpl-1 Gene in Aspergillus oryzae

The coding region of the LLPL-1 gene was amplified from genomic DNA of an Aspergillus niger strain by PCR with the primers HU188 (SEQ ID NO: 11) and HU189 (SEQ ID NO: 12) which included a EcoRV and a Xhol restriction enzyme site, respectively.

Reaction components (1 ng/μl of genomic DNA, 250 mM dNTP each, primer 250 nM each, 0.1 U/μl in Taq polymerase in 1×buffer (Roche Diagnostics, Japan)) were mixed and submitted for PCR under the following conditions.

	Step	Temperature	time
	1	94° C.	2 min
	2	92° C.	1 min
	3	55° C.	1 min
	4	72° C.	2 min
	5	72° C.	10 min
	6	4° C.	forever

Steps 2 to 4 were repeated 30 times.

The 2 kb fragment was gel-purified with QIA gel extraction kit and ligated into a pT7Blue vector with Ligation high. The ligation mixture was transformed into E. Coli JM109. The resultant plasmid (pLLPL1) was sequenced. The pLLPL1 was confirmed that no changes had happen in the LLPL-1 sequences.

The pLLPL1 was digested with EcoRV and Xhol and ligated into the NurI and Xhol sites in an Aspergillus expression cassette (pCaHj483) which has Aspergiler niger neutral amylase promoter, Aspergillus nidulans TPI leader sequences, Aspergillus niger glucoamylase terminator and Aspergillus nidulans amdS gene as a marker. The resultant plasmid was named pHUda103.

The LLPL-1 expression plasmid, pHUda103, was digested with NotI and about 6.1 kb DNA fragment containing Aspergillus niger neutral amylase promoter, LLPL-1 coding region, Aspergillus niger glucoamylase terminator and Aspergillus nidulans amdS gene was gel-purified with QIA gel extraction kit.

The 6.1 kb DNA fragment was transformed into Aspergillus oryzae BECh-2. The selected transformants were inoculated in 100 ml of MS-9 media and cultivated at 30° C. for 1 day. 3 ml of grown cell in MS-9 medium was inoculated to 100 ml of MDU-pH5 medium and cultivated at 30° C. for 3 days. The supernatant was obtained by centrifugation. The cell was opened by mixed with the equal volume of reaction buffer(50 mM KPB-pH 6.0) and glass-beads for 5 min on ice and debris was removed by centrifugation.

The lysophospholipase productivity of selected transformants was determined as the rate of hydrolysis of L-α-lysolecithin at pH 4.5 and 55° C. measured in units per ml relative to the activity of the host strain, BECh-2 which is normalized to 1.0. The results shown in the table below clearly demonstrate the absence of increased lysophospholipase activity in supernatants and the presence of increased lysophospholipase activity in cell free extracts.

		Yield. (supernatant)	Yield (Cell fraction)
	Strain	Relative activity	Relative activity
	BECh-2	1.0	1.0
	LP3	1.0	4.5
		1.0	4.0
	LP8	1.0	6.5
		1.0	5.5

Example 2

Cloning and Expression of LLPL-2 Gene from A. niger

Preparation of a llp2 Probe

The same strain of Aspergillus niger as in Example 1 was used as a genomic DNA supplier.

PCR reactions on Aspergillus niger genomic DNA was done with the primers HU212 (SEQ ID NO: 13) and HU213 (SEQ ID NO: 14) designed based upon amino acid sequences from purified lysophospholipase from AMG 400L (described in Example 4).

Reaction components (1 ng/μl of genomic DNA, 250 mM dNTP each, primer 250 nM each, 0.1 U/μl in Taq polymerase in 1×buffer (Roche Diagnostics, Japan)) were mixed and submitted for PCR under the following conditions.

	Step	Temperature	time
	1	94° C.	2 min
	2	92° C.	1 min
	3	50° C.	1 min
	4	72° C.	1 min
	5	72° C.	10 min
	6	4° C.	forever

Steps 2 to 4 were repeated 30 times.

The expected size, 0.6 kb fragment was gel-purified with QIA gel extraction kit (Qiagen, Germany) and ligated into a pT7Blue vector with ligation high (TOYOBO, Japan). The ligation mixture was transformed into E. coli JM109. The resultant plasmid (pHUda114) was sequenced and compared to the Penicillium lysophospholipase, showing that a clone encodes the internal part of the lysophospholipase.

Cloning of of llpl-2 Gene

In order to clone the missing part of the lysophospholipase gene, a genomic restriction map was constructed by using the PCR fragment as probes to a Southern blot of Aspergillus niger DNA digested with seven restriction enzymes, separately and probed with 1.0 kb fragment encoding partial lysophospholipase from pHUdal114.

A hybridized 4-6 kb Xbal fragment was selected for a llpl-2 gene subclone.

For construction of a partial genomic library of Aspergillus niger, the genomic DNA was digested with Xbal and run on a 0.7% agarose gel. DNA with a size between 4 to 6 kb was purified and cloned into pUC19 pretreated Xbal and BAP (Bacterial alkaline phosphatase). The Xbal sub-library was made by transforming the ligated clones into E. coli DH12α cells. Colonies were grown on Hybond-N+ membranes (Amersham Pharmacia Biotech, Japan) and hybridized to DIG-labelled (Non-radio isotope) 1.0 kb fragment from pHUda114.

Positive colonies were picked up and their inserts were checked by PCR. Plasmids from selected colonies were prepared and sequenced revealing 5 kb Xbal fragment were containing whole llpl-2 gene.

Expression of llpl-2 Gene in Aspergillus oryzae

The coding region of the LLPL-2 gene was amplified from genomic DNA of an Aspergillus niger strain by PCR with the primers HU225 (SEQ ID NO: 15) and HU226 (SEQ ID NO: 16) which included a Bglll and a PmeI restriction enzyme site, respectively.

Reaction components (1 ng/μl of genomic DNA, 250 mM dNTP each, primer 250 nM each, 0.1 U/μl in Taq polymerase in 1×buffer (Roche Diagnostics, Japan)) were mixed and submitted for PCR under the following conditions.

	Step	Temperature	time
	1	94° C.	2 min
	2	92° C.	1 min
	3	55° C.	1 min
	4	72° C.	2 min
	5	72° C.	10 min
	6	4° C.	forever

Step 2 to 4 were repeated 30 times.

The 2 kb fragment was gel-purified with QIA gel extraction kit and ligated into a pT7Blue vector with Ligation high. The ligation mixture was transformed into E. coli JM109. The resultant plasmid (pLLPL2) was sequenced. The pLLPL2 was confirmed that no changes had happen in the LLPL-2 sequences.

The pLLPL2 was digested with Bglll and PmeI and ligated into the BamHI and NurI sites in the Aspergillus expression cassette pCaHj483 which has Aspergillus niger neutral amylase promoter, Aspergillus nidulans TPI leader sequences, Aspergillus niger glucoamylase terminator and Aspergillus nidulans amdS gene as a marker. The resultant plasmid was pHUda123.

The LLPL-2 expression plasmid, pHUda123, was digested with NotI and about 6.0 kb DNA fragment containing Aspergillus niger neutral amylase promoter, LLPL-2 coding region, Aspergillus niger glucoamylase terminator and Aspergillus nidulans amdS gene was gel-purified with QIA gel extraction kit.

The 6.0 kb DNA fragment was transformed into Aspergillus oryzae BECh-2. The selected transformants were inoculated in 100 ml of MS-9 media and cultivated at 30° C. for 1 day. 3 ml of grown cell in MS-9 medium was inoculated to 100 ml of MDU-pH5 medium and cultivated cultivated at 30° C. for 4 days.

The supernatant was obtained by centrifugation. The cell was opened by mixed with the equal volume of reaction buffer (50 mM KPB-pH 6.0) and glass-beads for 5 min on ice and debris was removed by centrifugation.

The lysophospholipase productivity of selected transformants was determined as in Example 1. The results shown in the table below clearly demonstrate the absence of increased lysophospholipase activity in supernatants and the presence of increased lysophospholipase activity in cell free extracts.

		Yield. (supernatant)	Yield (Cell fraction)
	Strain	Relative activity	Relative activity
	BECh-2	1.0	1.0
	Fg-9	1.0	225
	Fg-15	1.0	18.0
	Fg-27	1.0	17.0
	Fg-33	1.0	14.5

Example 3

Cloning and Expression of LLPL Genes from E. coli Clones

Each of the following large molecular weight lysophospholipase (LLPL) genes is cloned from the indicated E. coli clone as genomic DNA supplier, and the gene is expressed in A. oryzae as described in Examples 1 and 2.

E. coli                                                                     clone LLPL
DSM 13003                        A. niger                                                                     LLPL-1
DSM 13004                        A. niger                                                                     LLPL-2
DSM 13082                        A. oryzae                                                                     LLPL-1
DSM 13083                        A. oryzae                                                                     LLPL-2

Example 4

Isolation of A. niger LLPL-2 from AMG 300L

Purification of LLPL-2 from AMG 300L

A commercially available glucoamylase preparation from A. niger (AMG 300L, product of Novo Nordisk A/S) was diluted 10-fold with Milli-Q water and subsequently added ammonium sulfate to 80% saturation. The solution was stirred 1 hour at 4° C. followed by centrifugation on an Sorvall RC-3B centrifuge, equipped with a GSA rotor head (4500 rpm for 35 min). The precipitate was discarded and the supernatant dialysed against 50 mM sodium acetate, pH 5.5. The dialysed solution was applied to a Q-Sepharose (2.6×4 cm) column in 50 mM sodium acetate, pH 5.5 at a flow rate of 300 ml h −1 . The column was washed (10×column volume) and proteins were eluted using a linear gradient of 0-0.35 M NaCl in 50 mM sodium acetate, pH 5.5 at a flow rate of 300 ml h −1 . Fractions containing activity were pooled, concentrated on an Amicon cell (10 kDa cutoff) to 2.5 ml and applied to Superdex 200 H/R (1.6×60 cm) in 0.2 mM sodium acetate, pH 5.5 by draining into the bed. Proteins were eluted isocratically at a flow rate of 30 ml h −l . The purified enzyme showed a specific activity of 86 LLU/mg.

SDS-PAGE analysis showed three protein bands at around 40, 80, and 120 kDa. N-terminal sequencing of the first 23 amino acids revealed that the protein bands at 40 and 120 kDa had identical sequences (shown at the N-terminal of SEQ ID NO: 4), whereas the protein band at 80 kDa was shown to have the sequence shown as SEQ ID NO: 19. IEF analysis showed that LLPL-2 had a pl of around 4.2.

Enzymatic Characterisation of LLPL-2

LLPL-2 was show to have a bell-shaped pH-activity profile with optimal activity at pH 4.0. The temperature optimum was found at 50° C. The enzyme activity was completely stable at pH 4.5 after up to 120 hours incubation at pH 4.5 and 50° C. LLPL-2 is furthermore completely stable at 50° C., whereas a half-life of 84 hours was determined at 60° C. LLPL-2 was not found to be dependent upon addition of mineral salts like sodium or calcium.

Example 5

Identification and Sequencing of LLPL-1 and LLPL-2 Genes from A. oryzae

Cultivation of A. oryzae

Aspergillus oryzae strain IFO 4177 was grown in two 20-liter lab fermentors on a 10-liter scale at 34° C. using yeast extract and dextrose in the batch medium, and maltose syrup, urea, yeast extract, and trace metals in the feed. Fungal mycelia from the first lab fermentor were harvested by filtering through a cellulose filter (pore size 7-11 microns) after 27 hours, 68.5 hours, 118 hours, and 139 hours of growth. The growth conditions for the second fermentor were identical to the first one, except for a slower growth rate during the first 20 hours of fermentation. Fungal mycelia from the second lab fermentor were harvested as above after 68.3 hours of growth. The harvested mycelia were immediately frozen in liquid N 2 and stored at −80° C.

The Aspergillus oryzae strain IFO 4177 was also grown in four 20-liter lab fermentors on a 10-liter scale at 34° C. using sucrose in the batch medium, and maltose syrup, ammonia, and yeast extract in the feed. The first of the four fermentations was carried out at pH 4.0. The second of the four fermentations was carried out at pH 7.0 with a constant low agitation rate (550 rpm) to achieve the rapid development of reductive metabolism. The third of the four fermentations was carried out at pH 7.0 under phosphate limited growth by lowering the amount of phosphate and yeast extract added to the batch medium. The fourth of the four fermentations was carried out at pH 7.0 and 39° C. After 75 hours of fermentation the temperature was lowered to 34° C. At 98 hours of fermentation the addition of carbon feed was stopped and the culture was allowed to starve for the last 30 hours of the fermentation. Fungal mycelial samples from the four lab fermentors above were then collected as described above, immediately frozen in liquid N 2 , and stored at −80° C.

Aspergillus oryzae strain IFO 4177 was also grown on Whatman filters placed on Cove-N agar plates for two days. The mycelia were collected, immediately frozen in liquid N 2 , and stored at −80° C.

Aspergillus oryzae strain IFO 4177 was also grown at 30° C. in 150 ml shake flasks containing RS-2 medium (Kofod et al., 1994, Journal of Biological Chemistry 269: 29182-29189) or a defined minimal medium. Fungal mycelia were collected after 5 days of growth in the RS-2 medium and 3 and 4 days of growth in the defined minimal medium, immediately frozen in liquid N 2 , and stored at −80° C.

Construction of Directional cDNA Libraries from Aspergillus oryzae

Total RNA was prepared by extraction with guanidinium thiocyanate followed by ultracentrifugation through a 5.7 M CsCl cushion (Chirgwin et al., 1979, Biochemistry 18: 5294-5299) using the following modifications. The frozen mycelia were ground in liquid N 2 to a fine powder with a mortar and a pestle, followed by grinding in a precooled coffee mill, and immediately suspended in 5 volumes of RNA extraction buffer (4 M guanidinium thiocyanate, 0.5% sodium laurylsarcosine, 25 mM sodium citrate pH 7.0, 0.1 M β-mercaptoethanol). The mixture was stirred for 30 minutes at room temperature and centrifuged (20 minutes at 10000 rpm, Beckman) to pellet the cell debris. The supernatant was collected, carefully layered onto a 5.7 M CsCl cushion (5.7 M CsCl, 10 mM EDTA, pH 7.5, 0.1% DEPC; autoclaved prior to use) using 26.5 ml supernatant per 12.0 ml of CsCl cushion, and centrifuged to obtain the total RNA (Beckman, SW 28 rotor, 25000 rpm, room temperature, 24 hours). After centrifugation the supernatant was carefully removed and the bottom of the tube containing the RNA pellet was cut off and rinsed with 70% ethanol. The total RNA pellet was transferred to an Eppendorf tube, suspended in 500 ml of TE, pH 7.6 (if difficult, heat occasionally for 5 minutes at 65° C.), phenol extracted, and precipitated with ethanol for 12 hours at −20° C. (2.5 volumes of ethanol, 0.1 volume of 3M sodium acetate pH 5.2). The RNA was collected by centrifugation, washed in 70% ethanol, and resuspended in a minimum volume of DEPC. The RNA concentration was determined by measuring OD 260/280 .

The poly(A) + RNA was isolated by oligo(dT)-cellulose affinity chromatography (Aviv & Leder, 1972, Proceedings of the National Academy of Sciences USA 69: 1408-1412). A total of 0.2 g of oligo(dT) cellulose (Boehringer Mannheim, Indianapolis, Ind.) was preswollen in 10 ml of 1×of column loading buffer (20 mM Tris-Cl, pH 7.6, 0.5 M NaCl, 1 mM EDTA, 0.1% SDS), loaded onto a DEPC-treated, plugged plastic column (Poly Prep Chromatography Column, BioRad, Hercules, Calif.), and equilibrated with 20 ml of 1×loading buffer. The total RNA (1-2 mg) was heated at 65° C. for 8 minutes, quenched on ice for 5 minutes, and after addition of 1 volume of 2×column loading buffer to the RNA sample loaded onto the column. The eluate was collected and reloaded 2-3 times by heating the sample as above and quenching on ice prior to each loading. The oligo(dT) column was washed with 10 volumes of 1×loading buffer, then with 3 volumes of medium salt buffer (20 mM Tris-Cl, pH 7.6, 0.1 M NaCl, 1 mM EDTA, 0.1% SDS), followed by elution of the poly(A) + RNA with 3 volumes of elution buffer (10 mM Tris-Cl, pH 7.6, 1 mM EDTA, 0.05% SDS) preheated to 65° C., by collecting 500 μl fractions. The OD 260 was read for each collected fraction, and the mRNA containing fractions were pooled and ethanol precipitated at −20° C. for 12 hours. The poly(A) + RNA was collected by centrifugation, resuspended in DEPC-DIW and stored in 5-10 mg aliquots at −80° C.

Double-stranded cDNA was synthesized from 5 μg of Aspergillus oryzae IFO 4177 poly(A) + RNA by the RNase H method (Gubler and Hoffman 1983, supra; Sambrook et al., 1989, supra) using a hair-pin modification. The poly(A) + RNA (5 μg in 5 μl of DEPC-treated water) was heated at 70° C. for 8 minutes in a pre-siliconized, RNase-free Eppendorf tube, quenched on ice, and combined in a final volume of 50 il with reverse transcriptase buffer (50 mM Tris-Cl pH 8.3, 75 mM KCl, 3 mM MgCl 2 , 10 mM DTT) containing 1 mM of dATP, dGTP and dTTP, and 0.5 mM of 5-methyl-dCTP, 40 units of human placental ribonuclease inhibitor, 4.81 μg of oligo(dT) 18 -NotI primer and 1000 units of SuperScript II RNase H-reverse transcriptase.

First-strand cDNA was synthesized by incubating the reaction mixture at 45° C. for 1 hour. After synthesis, the mRNA:cDNA hybrid mixture was gel filtrated through a Pharmacia MicroSpin S-400 HR spin column according to the manufacturer's instructions.

After the gel filtration, the hybrids were diluted in 250 μl of second strand buffer (20 mM Tris-Cl pH 7.4, 90 mM KCl, 4.6 mM MgCl 2 , 10 mM (NH 4 ) 2 SO 4 , 0.16 mM βNAD + ) containing 200 iM of each dNTP, 60 units of E. coli DNA polymerase I (Pharmacia, Uppsala, Sweden), 5.25 units of RNase H, and 15 units of E. coli DNA ligase. Second strand cDNA synthesis was performed by incubating the reaction tube at 16° C. for 2 hours, and an additional 15 minutes at 25° C. The reaction was stopped by addition of EDTA to 20 mM final concentration followed by phenol and chloroform extractions.

The double-stranded cDNA was ethanol precipitated at −20° C. for 12 hours by addition of 2 volumes of 96% ethanol and 0.2 volume of 10 M ammonium acetate, recovered by centrifugation, washed in 70% ethanol, dried (SpeedVac), and resuspended in 30 ml of Mung bean nuclease buffer (30 mM sodium acetate pH 4.6, 300 mM NaCl, 1 mM ZnSO 4 , 0.35 mM dithiothreitol, 2% glycerol) containing 25 units of Mung bean nuclease. The single-stranded hair-pin DNA was clipped by incubating the reaction at 30° C. for 30 minutes, followed by addition of 70 ml of 10 mM Tris-Cl, pH 7.5, 1 mM EDTA, phenol extraction, and ethanol precipitation with 2 volumes of 96% ethanol and 0.1 volume 3 M sodium acetate pH 5.2 on ice for 30 minutes.

The double-stranded cDNAs were recovered by centrifugation (20,000 rpm, 30 minutes), and blunt-ended with T4 DNA polymerase in 30 μl of T4 DNA poly-merase buffer (20 mM Tris-acetate, pH 7.9, 10 mM magnesium acetate, 50 mM potassium acetate, 1 mM dithiothreitol) containing 0.5 mM of each dNTP, and 5 units of T4 DNA polymerase by incubating the reaction mixture at +16° C. for 1 hour. The reaction was stopped by addition of EDTA to 20 mM final concentration, followed by phenol and chloroform extractions and ethanol precipitation for 12 h at −20° C. by adding 2 volumes of 96% ethanol and 0.1 volume of 3M sodium acetate pH 5.2.

After the fill-in reaction the cDNAs were recovered by centrifugation as above, washed in 70% ethanol, and the DNA pellet was dried in a SpeedVac. The cDNA pellet was resuspended in 25 μl of ligation buffer (30 mM Tris-Cl, pH 7.8, 10 mM MgCl 2 , 10 mM dithiothreitol, 0.5 mM ATP) containing 2 μg EcoRI adaptors (0.2 μg/μl, Pharmacia, Uppsala, Sweden) and 20 units of T4 ligase by incubating the reaction mix at 16° C. for 12 hours. The reaction was stopped by heating at 65° C. for 20 minutes, and then placed on ice for 5 minutes. The adapted cDNA was digested with NotI by addition of 20 μl autoclaved water, 5 μl of 10×NotI restriction enzyme buffer and 50 units of NotI, followed by incubation for 3 hours at 37° C. The reaction was stopped by heating the sample at 65° C. for 15 minutes. The cDNAs were size-fractionated by agarose gel electrophoresis on a 0.8% SeaPlaque GTG low melting temperature agarose gel (FMC, Rockland, Me.) in 1×TBE (in autoclaved water) to separate unligated adaptors and small cDNAs. The gel was run for 12 hours at 15 V, and the cDNA was size-selected with a cut-off at 0.7 kb by cutting out the lower part of the agarose gel. Then a 1.5% agarose gel was poured in front of the cDNA-containing gel, and the double-stranded cDNAs were concentrated by running the gel backwards until it appeared as a compressed band on the gel. The cDNA-containing gel piece was cut out from the gel and the cDNA was extracted from the gel using the GFX gel band purification kit (Amersham, Arlington Heights, Ill.) as follows. The trimmed gel slice was weighed in a 2 ml Biopure Eppendorf tube, then 10 ml of Capture Buffer was added for each 10 mg of gel slice, the gel slice was dissolved by incubation at 60° C. for 10 minutes, until the agarose was completely solubilized, the sample at the bottom of the tube by brief centrifugation. The melted sample was transferred to the GFX spin column placed in a collection tube, incubated at 25° C. for 1 minite, and then spun at full speed in a microcentrifuge for 30 seconds. The flow-through was discarded, and the column was washed with 500 μl of wash buffer, followed by centrifugation at full speed for 30 seconds. The collection tube was discarded, and the column was placed in a 1.5 ml Eppendorf tube, followed by elution of the cDNA by addition of 50 μl of TE pH 7.5 to the center of the column, incubation at 25° C. for 1 minute, and finally by centrifugation for 1 minute at maximum speed. The eluted cDNA was stored at −20° C. until library construction.

A plasmid DNA preparation for a EcoRI-NotI insert-containing pYES2.0 cDNA clone, was purified using a QIAGEN Tip-100 according to the manufacturer's instructions (QIAGEN, Valencia, Calif. A total of 10 mg of purified plasmid DNA was digested to completion with NotI and EcoRI in a total volume of 60 il by addition of 6 ml of 10×NEBuffer for EcoRI (New England Biolabs, Beverly, Mass.), 40 units of NotI, and 20 units of EcoRI followed by incubation for 6 hours at 37° C. The reaction was stopped by heating the sample at 65° C. for 20 minutes. The digested plasmid DNA was extracted once with phenol-chloroform, then with chloroform, followed by ethanol precipitation for 12 hours at −20° C. by adding 2 volumes of 96% ethanol and 0.1 volume of 3 M sodium acetate pH 5.2. The precipitated DNA was resuspended in 25 ml of 1×TE pH 7.5, loaded on a 0.8% SeaKem agarose gel in 1×TBE, and run on the gel for 3 hours at 60 V. The digested vector was cut out from the gel, and the DNA was extracted from the gel using the GFX gel band purification kit (Amersham Pharmacia Biotech, Uppsala, Sweden) according to the manufacturer's instructions. After measuring the DNA concentration by OD 260/280 , the eluted vector was stored at −20° C. until library construction.

To establish the optimal ligation conditions for the cDNA library, four test ligations were carried out in 10 il of ligation buffer (30 mM Tris-Cl pH 7.8, 10 mM MgCl 2 , 10 mM DTT, 0.5 mM ATP) containing 7 μl of double-stranded cDNA, (corresponding to approximately {fraction (1/10)} of the total volume in the cDNA sample), 2 units of T4 ligase, and 25 ng, 50 ng and 75 ng of EcoRI-NotI cleaved pYES2.0 vector, respectively (In-vitrogen). The vector background control ligation reaction contained 75 ng of EcoRI-NotI cleaved pYES.0 vector without cDNA. The ligation reactions were performed by incubation at 16° C. for 12 hours, heated at 65° C. for 20 minutes, and then 10 μl of autoclaved water was added to each tube. One il of the ligation mixtures was electroporated (200 W, 2.5 kV, 25 mF) to 40 μl electrocompetent E. coli DH10B cells (Life Technologies, Gaithersburg, Md). After addition of 1 ml SOC to each transformation mix, the cells were grown at 37° C. for 1 hour, 50 μl and 5 μl from each electroporation were plated on LB plates supplemented with ampicillin at 100 μg per ml and grown at 37° C. for 12 hours. Using the optimal conditions, 18 Aspergillus oryzae IFO 4177 cDNA libraries containing 1-2.5×10 7 independent colony forming units was established in E. coli, with a vector background of ca. 1%. The cDNA library was stored as (1) individual pools (25,000 c.f.u./pool) in 20% glycerol at −80° C.; (2) cell pellets of the same pools at −20° C.; (3) Qiagen purified plasmid DNA from individual pools at −20° C. (Qiagen Tip 100); and (4) directional, double-stranded cDNA at −20° C.

Aspergillus oryzae EST (Expressed Sequence Tag) Template Preparation

From each cDNA library described, transformant colonies were picked directly from the transformation plates into 96-well microtiter dishes (QIAGEN, GmbH, Hilden Germany) which contained 200 μl TB broth (Life Technologies, Frederick Md.) with 100, μg ampicillin per ml. The plates were incubated 24 hours with agitation (300 rpm) on a rotary shaker. To prevent spilling and cross-contamination, and to allow sufficient aeration, the plates were covered with a microporous tape sheet AirPore™ (QIAGEN GmbH, Hilden Germany). DNA was isolated from each well using the QIA prep 96 Turbo kit (QIAGEN GmbH, Hilden Germany).

EST Sequencing and Analysis of Nucleotide Sequence Data of the Aspergillus oryzae EST Library

Single-pass DNA sequencing of the Aspergillus oryzae ESTs was done with a Perkin-Elmer Applied Biosystems Model 377 XL Automatic DNA Sequencer (Perkin-Elmer Applied Biosystems, Inc., Foster City, Calif.) using dye-terminator chemistry (Giesecke et al., 1992, Journal of Virology Methods 38: 47-60) and a pYES specific primer (Invitrogen, Carlsbad, Calif.). Vector sequence and low quality 3′ sequence were removed with the pregap program from the Staden package (MRC, Cambridge, England). The sequences were assembled with TIGR Assembler software (Sutton et al., 1995, supra). The assembled sequences were searched with fast×3 (see Pearson and Lipman, 1988, Proceedings of the National Academy of Science USA 85: 2444-2448; Pearson, 1990, Methods in Enzymology 183: 63-98) against a customized database consisting of protein sequences from SWISSPROT, SWISSPROT-NEW, TREMBL, TREMBLNEW, REMTREMBL, PDB and GeneSeqP. The matrix used was BL50.

Nucleotide Sequence Analysis

The nucleotide sequence of the lysophospholipase cDNA clones pEST204, and pEST1648 were determined from both strands by the dideoxy chain-termination method (Sanger, F., Nicklen, S., and Coulson, A. R. ( 1977) Proc. Natl. Acad. Sci. U.S.A. 74, 5463-5467) using 500 ng of Qiagen-purified template (Qiagen, USA), the Taq deoxy-terminal cycle sequencing kit (Perkin-Elmer, USA), fluorescent labeled terminators and 5 pmol of either pYES 2.0 polylinker primers (Invitrogen, USA) or synthetic oligonucleotide primers. Analysis of the sequence data was performed according to Devereux et al., 1984 (Devereux, J., Haeberli, P., and Smithies, O. (1984) Nucleic Acids Res. 12, 387-395).

Example 6

Expression of LLPL-2 in Aspergillus oryzae and Aspergillus niger

Transformation in Aspergillus Strain

Aspergillus oryzae strain BECh-2 and an Aspergillus niger strain were each inoculated to 100 ml of YPG medium and incubated for 16 hrs at 32° C. at 120 rpm. Pellets were collected and washed with 0.6 M KCl, and resuspended 20 ml 0.6 M KCl containing Glucanex at the concentration of 30 μl/ml. Cultures were incubated at 32° C. at 60 rpm until protoplasts formed, then washed with STC buffer twice. The protoplasts were counted with a hematometer and resuspended in an 8:2:0.1 solution of STC:STPC:DMSO to a final concentration of 2.5×10e7 protoplasts/ml. About 3 μg of DNA was added to 100 μl of protoplasts solution, mixed gently and incubated on ice for 30 min. One ml of SPTC was added and incubated 30 min at 37° C. After the addition of 10 ml of 50° C. Cove top agarose, the reaction was poured onto Cove agar plate. Transformation plates were incubated at 32° C. for 5 days.

Expression of LLPL-2 Gene in Aspergillus niger

The coding region of the LLPL-2 gene was amplified from genomic DNA of an Aspergillus niger strain by PCR with the primers HU225 (SEQ ID NO: 15) and HU226 (SEQ ID NO: 16) which included a Bglll and a PmeI restriction enzyme site, respectively.

Reaction components (1 ng/μl of genomic DNA, 250 mM dNTP each, primer 250 nM each, 0.1 U/μl in Taq polymerase in 1×buffer (Roche Diagnostics, Japan)) were mixed and submitted for PCR under the following conditions.

	Step	Temperature	time
	1	94° C.	2 min
	2	92° C.	1 min
	3	55° C.	1 min
	4	72° C.	2 min
	5	72° C.	10 min
	6	4° C.	forever
	Step 2 to 4 were repeated 30 times.

The 2 kb fragment was gel-purified with QIA gel extraction kit and ligated into a PT2Blue vector with Ligation high. The ligation mixture was transformed into E. coli JM109. The resultant plasmid (pLLPL2) was sequenced, and it was confirmed that no changes had happened in the LLPL-2 sequences.

The pLLPL2 was digested with Bglll and PmeI and ligated into the BamHI and NurI sites in the Aspergillus expression cassette pCaHj483 which has Aspergillus niger neutral amylase promoter, Aspergillus nidulans TPI leader sequences, Aspergillus niger glucoamylase terminator and Aspergillus nidulans amdS gene as a marker. The resultant plasmid was named pHUda123.

The LLPL-2 expression plasmid, pHUda123, was transformed into an Aspergillus niger strain. Selected transformants were inoculated in 100 ml of MLC media and activated at 30° C. for 2 days. 5 ml of grown cell in MLC medium was inoculated to 100 ml of MU-1 medium and cultivated at 30° C. for 7 days.

Supernatant was obtained by centrifugation, and the lysophospholipase activity was measured as described above. The table below shows the lysophospholpase activity from of the selected transformants, relative to the activity of the host strain, MBin114 which was normalized to 1.0.

        Yield (supernatant)
Strain  Relative activity
MBin114 1.0
123N-33 63
123N-38 150
123N-46 157
123N-48 101

The above results clearly demonstrate the presence of increased lysophospholipase activity in supernatants.

Expression and Secretion of C-terminal Deleted LLPL-2 Gene in Aspergillus oryzae

LLPL-2 with the C-terminal deleted (LLPL-2-CD) was made from genomic DNA of a strain of A. niger by PCR with the primers HU219 (SEQ ID NO: 17) and HU244 (SEQ ID NO: 18), which included an EagIand a PmeI restriction enzyme site, respectively.

Reaction components (1 ng/ml of genomic DNA, 250 mM dNTP each, primer 250 nM each, 0.1 U/ml in Taq polymerase in 1×buffer (Roche Diagnostics, Japan)) were mixed and submitted for PCR under the following conditions.

	Step	Temperature	time
	1	94° C.	2 min
	2	92° C.	1 min
	3	55° C.	1 min
	4	72° C.	1.5 min
	5	72° C.	10 min
	6	4° C.	forever
	Step 2 to 4 were repeated 30 times.

The 1.3 kb fragment was digested with EagI and PmeI and ligated into the EagIand PmeI sites in the pLLPL-2 having LLPL-2 gene with Ligation high.(TOYOBO). The ligation mixture was transformed into E. coli JM109. The resultant plasmid (pHUda126) was sequenced to confirm that nucleotides 115-1824 of SEQ ID NO: 3 were intact and that nucleotides 1825-1914 of SEQ ID NO: 3 had been deleted, corresponding to a C-terminal deletion of amino acids S571-L600 of LLPL-2 (SEQ ID NO: 4).

The 2.0 kb fragment encoding LLPL-2-CD was obtained by digesting pHUda126 with Bglll and Smal. The 2.0 kb fragment was gel-purified with the QIA gel extraction kit and ligated into the BamHI and NurI sites in the Aspergillus expression cassette pCaHj483 with Ligation high. The ligation mixture was transformed into E. coli JM109.

The resultant plasmid (pHUda128) for LLPL-2-CD expression cassette was constructed and transformed into the A. oryzae strain, BECh-2. Selected transformants were inoculated in 100 ml of MS-9 media and cultivated at 30° C. for 1 day. 3 ml of grown cell in MS-9 medium was inoculated to 100 ml of MDU-pH5 medium and cultivated cultivated at 30° C. for 3 days.

Supernatant was obtained by centrifugation, and the lysophospholipase activity was measured as described above. The table below shows the lysophospholipase activity from of the selected transformants, relative to the activity of the host strain, BECh-2 which was normalized to 1.0.

       Yield (supernatant)
Strain Relative activity
BECh-2 1.0
128-3  9
128-9  7
128-12 33
128-15 11

The above results clearly demonstrate the presence of increased lysophospholipase activity in supernatants.

Example 7

Use of A. niger LLPL-2 in Filtration

Filtration performance was determined at 60° C. and pH 4.5 using partially hydrolyzed wheat starch, as follows: The wheat starch hydrolyzate (25 ml in a 100 ml flask) was mixed with LLPL-2 from Example 4 at a dosage of 0.4 L/t dry matter and incubated 6 hours at 60° C. under magnetic stirring. A control was made without enzyme addition. After 6 hours incubation the hydrolyzate was decanted into a glass and left to settle for 10 min at room temperature. The tendency of the sample to flocculate was determined by visual inspection and ranged as excellent, good, fair, bad, or none. The filtration flux was subsequently determined by running the sample through a filter (Whatman no. 4) and measuring the amount of filtrate after 2, 5, and 10 min. The clarity of the filtered sample was measured spectrophotometrically at 720 nm. The flux of filtrate (ml) was as follows:

	Time	Control	LLPL-2
	2 min.	4	8
	5 min.	8	13
	10 min.	12	16

These results indicate that LLPL-2 showed a clear effect on the filtration flux compared to a control sample. Furthermore a clear filtrate was obtained by treatment with LLPL-2.

19 1 1923 DNA Aspergillus niger CDS (1)..(1920) 1atg aag ttc aat gca ctc tta acg acc ctc gcg gcg ctg ggg tat atc 48Met Lys Phe Asn Ala Leu Leu Thr Thr Leu Ala Ala Leu Gly Tyr Ile -35 -30 -25caa gga ggc gcc gcg gtt cct aca acc gtc gac ctc aca tat gca gac 96Gln Gly Gly Ala Ala Val Pro Thr Thr Val Asp Leu Thr Tyr Ala Asp-20 -15 -10 -5ata tca cct cgc gca ctg gat aat gcc cct gat ggt tat acc ccg agc 144Ile Ser Pro Arg Ala Leu Asp Asn Ala Pro Asp Gly Tyr Thr Pro Ser -1 1 5 10aat gta tcc tgt cct gca aac aga ccg acg att cgc agc gcg tca acc 192Asn Val Ser Cys Pro Ala Asn Arg Pro Thr Ile Arg Ser Ala Ser Thr 15 20 25ctg tca tcg aac gag acg gca tgg gtg gac gtc cgg cgt aag cag act 240Leu Ser Ser Asn Glu Thr Ala Trp Val Asp Val Arg Arg Lys Gln Thr 30 35 40gtc tca gcg atg aaa gac ctt ttc ggc cat atc aac atg agc tca ttt 288Val Ser Ala Met Lys Asp Leu Phe Gly His Ile Asn Met Ser Ser Phe45 50 55 60gac gct att tcg tac atc aac agc cat tca tca aat atc acc aac ata 336Asp Ala Ile Ser Tyr Ile Asn Ser His Ser Ser Asn Ile Thr Asn Ile 65 70 75ccc aac atc ggt att gcc gtg tcc ggc ggt ggc tac aga gcc ctg acc 384Pro Asn Ile Gly Ile Ala Val Ser Gly Gly Gly Tyr Arg Ala Leu Thr 80 85 90aac ggc gcg gga gca ctc aag gca ttc gac agt cga acg gaa aac tca 432Asn Gly Ala Gly Ala Leu Lys Ala Phe Asp Ser Arg Thr Glu Asn Ser 95 100 105acc cat aat gga cag ctc ggt ggt ctt ctg cag tca gcc aca tac ctg 480Thr His Asn Gly Gln Leu Gly Gly Leu Leu Gln Ser Ala Thr Tyr Leu 110 115 120tcc ggt ctc tcc gga ggt ggc tgg ctc ctg ggc tca atc tac atc aac 528Ser Gly Leu Ser Gly Gly Gly Trp Leu Leu Gly Ser Ile Tyr Ile Asn125 130 135 140aac ttc acc acc gtc tcc aat ctg caa acc tac aaa gag ggc gaa gtc 576Asn Phe Thr Thr Val Ser Asn Leu Gln Thr Tyr Lys Glu Gly Glu Val 145 150 155tgg cag ttc cag aat tca atc acg aaa ggc cca aag acc aac ggc ttg 624Trp Gln Phe Gln Asn Ser Ile Thr Lys Gly Pro Lys Thr Asn Gly Leu 160 165 170caa gct tgg gat aca gcc aag tac tac cgc gat ctg gcc aag gtg gtc 672Gln Ala Trp Asp Thr Ala Lys Tyr Tyr Arg Asp Leu Ala Lys Val Val 175 180 185gct ggc aag aag gac gcg ggc ttc aac act tcc ttc acg gac tac tgg 720Ala Gly Lys Lys Asp Ala Gly Phe Asn Thr Ser Phe Thr Asp Tyr Trp 190 195 200ggt cgc gca ctc tcc tac cag ctg att aac gcg acc gac gga ggc cca 768Gly Arg Ala Leu Ser Tyr Gln Leu Ile Asn Ala Thr Asp Gly Gly Pro205 210 215 220ggc tac acc tgg tca tcg atc gct tta acc cag ggc ttc aag aac gga 816Gly Tyr Thr Trp Ser Ser Ile Ala Leu Thr Gln Gly Phe Lys Asn Gly 225 230 235aac atg ccc atg ccg ctc ctt gtc gcc gac ggc cgc aac cca ggc gag 864Asn Met Pro Met Pro Leu Leu Val Ala Asp Gly Arg Asn Pro Gly Glu 240 245 250acc cta atc ggc agc aac tcg acc gtg tat gag ttc aac ccc tgg gaa 912Thr Leu Ile Gly Ser Asn Ser Thr Val Tyr Glu Phe Asn Pro Trp Glu 255 260 265ttc ggc agt ttt gat ccg tcc atc ttc ggc ttc gct ccc ctc gaa tac 960Phe Gly Ser Phe Asp Pro Ser Ile Phe Gly Phe Ala Pro Leu Glu Tyr 270 275 280ctc gga tcc tac ttt gag aac ggc gaa gtc cca tcc agc cga tcc tgc 1008Leu Gly Ser Tyr Phe Glu Asn Gly Glu Val Pro Ser Ser Arg Ser Cys285 290 295 300gtc cgc ggc ttc gat aac gca ggc ttc gtc atg gga acc tcc tcc agt 1056Val Arg Gly Phe Asp Asn Ala Gly Phe Val Met Gly Thr Ser Ser Ser 305 310 315ctc ttc aac caa ttc atc ctg aag ctc aac acc acc gac atc cca tca 1104Leu Phe Asn Gln Phe Ile Leu Lys Leu Asn Thr Thr Asp Ile Pro Ser 320 325 330acc ctc aaa acg gtc atc gcc agc atc cta gaa gaa cta ggc gac cgc 1152Thr Leu Lys Thr Val Ile Ala Ser Ile Leu Glu Glu Leu Gly Asp Arg 335 340 345aac gac gac atc gcc atc tac tct ccc aac ccc ttc tac ggg tac cgc 1200Asn Asp Asp Ile Ala Ile Tyr Ser Pro Asn Pro Phe Tyr Gly Tyr Arg 350 355 360aac gcg aca gtt tca tac gaa aag acc ccg gac ctg aac gtc gtc gac 1248Asn Ala Thr Val Ser Tyr Glu Lys Thr Pro Asp Leu Asn Val Val Asp365 370 375 380ggt ggc gaa gac aaa cag aac ctc ccc ctc cat cct ctc atc caa ccc 1296Gly Gly Glu Asp Lys Gln Asn Leu Pro Leu His Pro Leu Ile Gln Pro 385 390 395gcc cgc aac gtg gac gtc atc ttc gcc gtc gac tcc tca gcc agt acc 1344Ala Arg Asn Val Asp Val Ile Phe Ala Val Asp Ser Ser Ala Ser Thr 400 405 410tcg gac aac tgg ccc aac gga agt cct ctc gtc gcg act tac gaa cgt 1392Ser Asp Asn Trp Pro Asn Gly Ser Pro Leu Val Ala Thr Tyr Glu Arg 415 420 425agt ctc aac tca acc ggt atc gga aac ggc acc gcg ttc cct agc atc 1440Ser Leu Asn Ser Thr Gly Ile Gly Asn Gly Thr Ala Phe Pro Ser Ile 430 435 440ccg gac aag agc acc ttc att aac ctg ggc ttg aac acc cgt ccg act 1488Pro Asp Lys Ser Thr Phe Ile Asn Leu Gly Leu Asn Thr Arg Pro Thr445 450 455 460ttc ttc ggc tgc aat agt tcc aat atc aca ggc cat gca ccc ctg gtt 1536Phe Phe Gly Cys Asn Ser Ser Asn Ile Thr Gly His Ala Pro Leu Val 465 470 475gtc tac ctc ccc aac tac ccc tac aca acc ctc tcc aac aag tcg acc 1584Val Tyr Leu Pro Asn Tyr Pro Tyr Thr Thr Leu Ser Asn Lys Ser Thr 480 485 490ttc cag ctc aag tac gag atc ttg gag cgt gat gag atg atc acc aat 1632Phe Gln Leu Lys Tyr Glu Ile Leu Glu Arg Asp Glu Met Ile Thr Asn 495 500 505ggc tgg aac gtg gtt act atg ggt aat gga tca agg aag tct tac gag 1680Gly Trp Asn Val Val Thr Met Gly Asn Gly Ser Arg Lys Ser Tyr Glu 510 515 520gat tgg ccg act tgt gcg ggc tgc gct att ctg agt cgc tcg ttt gat 1728Asp Trp Pro Thr Cys Ala Gly Cys Ala Ile Leu Ser Arg Ser Phe Asp525 530 535 540cgg act aat acc cag gtg ccg gat atg tgc tcg cag tgt ttt gac aag 1776Arg Thr Asn Thr Gln Val Pro Asp Met Cys Ser Gln Cys Phe Asp Lys 545 550 555tat tgc tgg gat gga acg agg aat agt acg acg ccg gcg gcg tat gag 1824Tyr Cys Trp Asp Gly Thr Arg Asn Ser Thr Thr Pro Ala Ala Tyr Glu 560 565 570ccg aag gta ttg atg gct agt gcg ggt gtg agg ggt att tcg atg tcg 1872Pro Lys Val Leu Met Ala Ser Ala Gly Val Arg Gly Ile Ser Met Ser 575 580 585agg ttg gtt ttg ggt ctc ttt ccg gtg gtg gtt ggg gtt tgg atg atg 1920Arg Leu Val Leu Gly Leu Phe Pro Val Val Val Gly Val Trp Met Met 590 595 600tga 1923 2 640 PRT Aspergillus niger 2Met Lys Phe Asn Ala Leu Leu Thr Thr Leu Ala Ala Leu Gly Tyr Ile -35 -30 -25Gln Gly Gly Ala Ala Val Pro Thr Thr Val Asp Leu Thr Tyr Ala Asp-20 -15 -10 -5Ile Ser Pro Arg Ala Leu Asp Asn Ala Pro Asp Gly Tyr Thr Pro Ser -1 1 5 10Asn Val Ser Cys Pro Ala Asn Arg Pro Thr Ile Arg Ser Ala Ser Thr 15 20 25Leu Ser Ser Asn Glu Thr Ala Trp Val Asp Val Arg Arg Lys Gln Thr 30 35 40Val Ser Ala Met Lys Asp Leu Phe Gly His Ile Asn Met Ser Ser Phe45 50 55 60Asp Ala Ile Ser Tyr Ile Asn Ser His Ser Ser Asn Ile Thr Asn Ile 65 70 75Pro Asn Ile Gly Ile Ala Val Ser Gly Gly Gly Tyr Arg Ala Leu Thr 80 85 90Asn Gly Ala Gly Ala Leu Lys Ala Phe Asp Ser Arg Thr Glu Asn Ser 95 100 105Thr His Asn Gly Gln Leu Gly Gly Leu Leu Gln Ser Ala Thr Tyr Leu 110 115 120Ser Gly Leu Ser Gly Gly Gly Trp Leu Leu Gly Ser Ile Tyr Ile Asn125 130 135 140Asn Phe Thr Thr Val Ser Asn Leu Gln Thr Tyr Lys Glu Gly Glu Val 145 150 155Trp Gln Phe Gln Asn Ser Ile Thr Lys Gly Pro Lys Thr Asn Gly Leu 160 165 170Gln Ala Trp Asp Thr Ala Lys Tyr Tyr Arg Asp Leu Ala Lys Val Val 175 180 185Ala Gly Lys Lys Asp Ala Gly Phe Asn Thr Ser Phe Thr Asp Tyr Trp 190 195 200Gly Arg Ala Leu Ser Tyr Gln Leu Ile Asn Ala Thr Asp Gly Gly Pro205 210 215 220Gly Tyr Thr Trp Ser Ser Ile Ala Leu Thr Gln Gly Phe Lys Asn Gly 225 230 235Asn Met Pro Met Pro Leu Leu Val Ala Asp Gly Arg Asn Pro Gly Glu 240 245 250Thr Leu Ile Gly Ser Asn Ser Thr Val Tyr Glu Phe Asn Pro Trp Glu 255 260 265Phe Gly Ser Phe Asp Pro Ser Ile Phe Gly Phe Ala Pro Leu Glu Tyr 270 275 280Leu Gly Ser Tyr Phe Glu Asn Gly Glu Val Pro Ser Ser Arg Ser Cys285 290 295 300Val Arg Gly Phe Asp Asn Ala Gly Phe Val Met Gly Thr Ser Ser Ser 305 310 315Leu Phe Asn Gln Phe Ile Leu Lys Leu Asn Thr Thr Asp Ile Pro Ser 320 325 330Thr Leu Lys Thr Val Ile Ala Ser Ile Leu Glu Glu Leu Gly Asp Arg 335 340 345Asn Asp Asp Ile Ala Ile Tyr Ser Pro Asn Pro Phe Tyr Gly Tyr Arg 350 355 360Asn Ala Thr Val Ser Tyr Glu Lys Thr Pro Asp Leu Asn Val Val Asp365 370 375 380Gly Gly Glu Asp Lys Gln Asn Leu Pro Leu His Pro Leu Ile Gln Pro 385 390 395Ala Arg Asn Val Asp Val Ile Phe Ala Val Asp Ser Ser Ala Ser Thr 400 405 410Ser Asp Asn Trp Pro Asn Gly Ser Pro Leu Val Ala Thr Tyr Glu Arg 415 420 425Ser Leu Asn Ser Thr Gly Ile Gly Asn Gly Thr Ala Phe Pro Ser Ile 430 435 440Pro Asp Lys Ser Thr Phe Ile Asn Leu Gly Leu Asn Thr Arg Pro Thr445 450 455 460Phe Phe Gly Cys Asn Ser Ser Asn Ile Thr Gly His Ala Pro Leu Val 465 470 475Val Tyr Leu Pro Asn Tyr Pro Tyr Thr Thr Leu Ser Asn Lys Ser Thr 480 485 490Phe Gln Leu Lys Tyr Glu Ile Leu Glu Arg Asp Glu Met Ile Thr Asn 495 500 505Gly Trp Asn Val Val Thr Met Gly Asn Gly Ser Arg Lys Ser Tyr Glu 510 515 520Asp Trp Pro Thr Cys Ala Gly Cys Ala Ile Leu Ser Arg Ser Phe Asp525 530 535 540Arg Thr Asn Thr Gln Val Pro Asp Met Cys Ser Gln Cys Phe Asp Lys 545 550 555Tyr Cys Trp Asp Gly Thr Arg Asn Ser Thr Thr Pro Ala Ala Tyr Glu 560 565 570Pro Lys Val Leu Met Ala Ser Ala Gly Val Arg Gly Ile Ser Met Ser 575 580 585Arg Leu Val Leu Gly Leu Phe Pro Val Val Val Gly Val Trp Met Met 590 595 600 3 1917 DNA Aspergillus niger CDS (1)..(1914) 3atg aag ttg cct ctc ttt gct gct gca gca gct ggc ctc gcc aat gcc 48Met Lys Leu Pro Leu Phe Ala Ala Ala Ala Ala Gly Leu Ala Asn Ala -35 -30 -25gct tcc ctg cct gtc gaa agg gcc gag gct gag gtt gcg tcc gtc gcc 96Ala Ser Leu Pro Val Glu Arg Ala Glu Ala Glu Val Ala Ser Val Ala -20 -15 -10gcc gat tta atc gtc cgc gcc ctc ccc aat gcc ccc gat ggc tac act 144Ala Asp Leu Ile Val Arg Ala Leu Pro Asn Ala Pro Asp Gly Tyr Thr -5 -1 1 5 10ccc tcc aat gtc acc tgt ccc tcg act cgt ccg agc att cgt gat gcc 192Pro Ser Asn Val Thr Cys Pro Ser Thr Arg Pro Ser Ile Arg Asp Ala 15 20 25tcg ggc atc tcc acc aac gag acc gag tgg ctc aag gtc cgt cgc aat 240Ser Gly Ile Ser Thr Asn Glu Thr Glu Trp Leu Lys Val Arg Arg Asn 30 35 40gcg acc ctc acc ccg atg aag aac ctc ctt agc cgt ctc aac ctc acc 288Ala Thr Leu Thr Pro Met Lys Asn Leu Leu Ser Arg Leu Asn Leu Thr 45 50 55ggc ttt gat acc acc tcc tac atc aat gaa cac tcc agc aac atc tcc 336Gly Phe Asp Thr Thr Ser Tyr Ile Asn Glu His Ser Ser Asn Ile Ser 60 65 70aac atc ccc aac att gca att gcg gct tcg ggt ggt gga tac cgt gcg 384Asn Ile Pro Asn Ile Ala Ile Ala Ala Ser Gly Gly Gly Tyr Arg Ala75 80 85 90ctc acc aac gga gct ggt gcg ctg aag gct ttc gac agc cgc tcc gac 432Leu Thr Asn Gly Ala Gly Ala Leu Lys Ala Phe Asp Ser Arg Ser Asp 95 100 105aat gcc acc aac tcc ggt caa ctg ggt ggt ctg ctg cag gcg gca acc 480Asn Ala Thr Asn Ser Gly Gln Leu Gly Gly Leu Leu Gln Ala Ala Thr 110 115 120tac gtc tct ggt ctg agt ggt ggt agc tgg ctg gtc gga tcc atg ttc 528Tyr Val Ser Gly Leu Ser Gly Gly Ser Trp Leu Val Gly Ser Met Phe 125 130 135gtc aac aac ttc tcc tcc atc ggt gaa ttg caa gcc agc gag aag gtc 576Val Asn Asn Phe Ser Ser Ile Gly Glu Leu Gln Ala Ser Glu Lys Val 140 145 150tgg cgc ttc gac aag tcc ctg ctc gag gga ccc aac ttc gac cac atc 624Trp Arg Phe Asp Lys Ser Leu Leu Glu Gly Pro Asn Phe Asp His Ile155 160 165 170cag atc gtc agc acg gtg gaa tac tgg aag gac att acc gag gaa gtc 672Gln Ile Val Ser Thr Val Glu Tyr Trp Lys Asp Ile Thr Glu Glu Val 175 180 185gac ggc aag gct aac gct ggt ttt aac act tcc ttc acc gac tac tgg 720Asp Gly Lys Ala Asn Ala Gly Phe Asn Thr Ser Phe Thr Asp Tyr Trp 190 195 200ggc cgt gcg ctg tcc tac cag ctg gtg aac gcc tcc gat gac aag ggt 768Gly Arg Ala Leu Ser Tyr Gln Leu Val Asn Ala Ser Asp Asp Lys Gly 205 210 215ggt ccc gac tac acc tgg tcc tcc att gcg ctc atg gac gac ttc aag 816Gly Pro Asp Tyr Thr Trp Ser Ser Ile Ala Leu Met Asp Asp Phe Lys 220 225 230aac ggc cag tac ccc atg cct att gtg gtc gcc gac ggc cgc aac ccc 864Asn Gly Gln Tyr Pro Met Pro Ile Val Val Ala Asp Gly Arg Asn Pro235 240 245 250ggc gaa atc atc gtt gag acc aat gcc acc gtt tat gaa gtg aac cct 912Gly Glu Ile Ile Val Glu Thr Asn Ala Thr Val Tyr Glu Val Asn Pro 255 260 265tgg gaa ttc ggc tct ttc gac ccc agc gtc tac gcc ttc gct ccc ctg 960Trp Glu Phe Gly Ser Phe Asp Pro Ser Val Tyr Ala Phe Ala Pro Leu 270 275 280cag tat ctg ggc tcc cgg ttc gag aac ggc tcc atc ccg gac aac ggc 1008Gln Tyr Leu Gly Ser Arg Phe Glu Asn Gly Ser Ile Pro Asp Asn Gly 285 290 295acc tgc gtg agc ggc ttc gac aat gcc ggc ttt atc atg gga tca tcc 1056Thr Cys Val Ser Gly Phe Asp Asn Ala Gly Phe Ile Met Gly Ser Ser 300 305 310tcc acc ctg ttc aac caa ttc ctc ctc caa atc aac agc acc agc atc 1104Ser Thr Leu Phe Asn Gln Phe Leu Leu Gln Ile Asn Ser Thr Ser Ile315 320 325 330ccc acg atc ctg aag gat gcc ttc act gac atc ctc gag gac ctc ggt 1152Pro Thr Ile Leu Lys Asp Ala Phe Thr Asp Ile Leu Glu Asp Leu Gly 335 340 345gag cgc aac gac gat atc gcc gtc tac tcc ccc aac ccc ttc tcc ggc 1200Glu Arg Asn Asp Asp Ile Ala Val Tyr Ser Pro Asn Pro Phe Ser Gly 350 355 360tac cgc gac agc agc gag gat tac gcc aca gcc aag gac ctc gac gtt 1248Tyr Arg Asp Ser Ser Glu Asp Tyr Ala Thr Ala Lys Asp Leu Asp Val 365 370 375gtc gac ggt ggt gaa gac ggc gag aac atc cct ctg cac ccg ctg atc 1296Val Asp Gly Gly Glu Asp Gly Glu Asn Ile Pro Leu His Pro Leu Ile 380 385 390cag ccc gag cgt gcc gtc gat gtc atc ttc gcc atc gac tcc tct gcc 1344Gln Pro Glu Arg Ala Val Asp Val Ile Phe Ala Ile Asp Ser Ser Ala395 400 405 410gac aca gac tac tac tgg ccc aac ggt acc tcc ctt gtc gcg acc tac 1392Asp Thr Asp Tyr Tyr Trp Pro Asn Gly Thr Ser Leu Val Ala Thr Tyr 415 420 425gag cgc agt ctc gag ccc agc atc gcc aac ggc acc gcc ttc ccc gcc 1440Glu Arg Ser Leu Glu Pro Ser Ile Ala Asn Gly Thr Ala Phe Pro Ala 430 435 440gtg ccg gat cag aac acc ttc gtc aac ctg ggt ctc aac tcc cgc ccg 1488Val Pro Asp Gln Asn Thr Phe Val Asn Leu Gly Leu Asn Ser Arg Pro 445 450 455act ttc ttc ggc tgc gac ccc aag aac atc tcc ggc acc gcc ccc ctg 1536Thr Phe Phe Gly Cys Asp Pro Lys Asn Ile Ser Gly Thr Ala Pro Leu 460 465 470gtc att tat ctg cct aac agc ccc tac acc tac gac tcc aac ttc tcg 1584Val Ile Tyr Leu Pro Asn Ser Pro Tyr Thr Tyr Asp Ser Asn Phe Ser475 480 485 490acc ttc aag ctg acc tac agc gac gag gag cgt gat tcc gtc atc acc 1632Thr Phe Lys Leu Thr Tyr Ser Asp Glu Glu Arg Asp Ser Val Ile Thr 495 500 505aac ggc tgg aac gtg gtc act cgc ggt aac ggt acc gtt gat gat aac 1680Asn Gly Trp Asn Val Val Thr Arg Gly Asn Gly Thr Val Asp Asp Asn 510 515 520ttc ccg tct tgc gtg gcg tgc gct att ctc caa gcg ctc cac tac agg 1728Phe Pro Ser Cys Val Ala Cys Ala Ile Leu Gln Ala Leu His Tyr Arg 525 530 535acg aac acc tct ctg cca gat atc tgt acc acc tgc ttt aac gat tac 1776Thr Asn Thr Ser Leu Pro Asp Ile Cys Thr Thr Cys Phe Asn Asp Tyr 540 545 550tgc tgg aac ggc acg aca aac agc act acg cct gga gct tat gaa ccc 1824Cys Trp Asn Gly Thr Thr Asn Ser Thr Thr Pro Gly Ala Tyr Glu Pro555 560 565 570agt gtg ctg att gct act agc ggt gcg atc aag agt gtc ttg gat tac 1872Ser Val Leu Ile Ala Thr Ser Gly Ala Ile Lys Ser Val Leu Asp Tyr 575 580 585tcg gtg ctg gcg ctc gcc atg ggt gtt gct gcg ttt atg ctg tag 1917Ser Val Leu Ala Leu Ala Met Gly Val Ala Ala Phe Met Leu 590 595 600 4 638 PRT Aspergillus niger 4Met Lys Leu Pro Leu Phe Ala Ala Ala Ala Ala Gly Leu Ala Asn Ala -35 -30 -25Ala Ser Leu Pro Val Glu Arg Ala Glu Ala Glu Val Ala Ser Val Ala -20 -15 -10Ala Asp Leu Ile Val Arg Ala Leu Pro Asn Ala Pro Asp Gly Tyr Thr -5 -1 1 5 10Pro Ser Asn Val Thr Cys Pro Ser Thr Arg Pro Ser Ile Arg Asp Ala 15 20 25Ser Gly Ile Ser Thr Asn Glu Thr Glu Trp Leu Lys Val Arg Arg Asn 30 35 40Ala Thr Leu Thr Pro Met Lys Asn Leu Leu Ser Arg Leu Asn Leu Thr 45 50 55Gly Phe Asp Thr Thr Ser Tyr Ile Asn Glu His Ser Ser Asn Ile Ser 60 65 70Asn Ile Pro Asn Ile Ala Ile Ala Ala Ser Gly Gly Gly Tyr Arg Ala75 80 85 90Leu Thr Asn Gly Ala Gly Ala Leu Lys Ala Phe Asp Ser Arg Ser Asp 95 100 105Asn Ala Thr Asn Ser Gly Gln Leu Gly Gly Leu Leu Gln Ala Ala Thr 110 115 120Tyr Val Ser Gly Leu Ser Gly Gly Ser Trp Leu Val Gly Ser Met Phe 125 130 135Val Asn Asn Phe Ser Ser Ile Gly Glu Leu Gln Ala Ser Glu Lys Val 140 145 150Trp Arg Phe Asp Lys Ser Leu Leu Glu Gly Pro Asn Phe Asp His Ile155 160 165 170Gln Ile Val Ser Thr Val Glu Tyr Trp Lys Asp Ile Thr Glu Glu Val 175 180 185Asp Gly Lys Ala Asn Ala Gly Phe Asn Thr Ser Phe Thr Asp Tyr Trp 190 195 200Gly Arg Ala Leu Ser Tyr Gln Leu Val Asn Ala Ser Asp Asp Lys Gly 205 210 215Gly Pro Asp Tyr Thr Trp Ser Ser Ile Ala Leu Met Asp Asp Phe Lys 220 225 230Asn Gly Gln Tyr Pro Met Pro Ile Val Val Ala Asp Gly Arg Asn Pro235 240 245 250Gly Glu Ile Ile Val Glu Thr Asn Ala Thr Val Tyr Glu Val Asn Pro 255 260 265Trp Glu Phe Gly Ser Phe Asp Pro Ser Val Tyr Ala Phe Ala Pro Leu 270 275 280Gln Tyr Leu Gly Ser Arg Phe Glu Asn Gly Ser Ile Pro Asp Asn Gly 285 290 295Thr Cys Val Ser Gly Phe Asp Asn Ala Gly Phe Ile Met Gly Ser Ser 300 305 310Ser Thr Leu Phe Asn Gln Phe Leu Leu Gln Ile Asn Ser Thr Ser Ile315 320 325 330Pro Thr Ile Leu Lys Asp Ala Phe Thr Asp Ile Leu Glu Asp Leu Gly 335 340 345Glu Arg Asn Asp Asp Ile Ala Val Tyr Ser Pro Asn Pro Phe Ser Gly 350 355 360Tyr Arg Asp Ser Ser Glu Asp Tyr Ala Thr Ala Lys Asp Leu Asp Val 365 370 375Val Asp Gly Gly Glu Asp Gly Glu Asn Ile Pro Leu His Pro Leu Ile 380 385 390Gln Pro Glu Arg Ala Val Asp Val Ile Phe Ala Ile Asp Ser Ser Ala395 400 405 410Asp Thr Asp Tyr Tyr Trp Pro Asn Gly Thr Ser Leu Val Ala Thr Tyr 415 420 425Glu Arg Ser Leu Glu Pro Ser Ile Ala Asn Gly Thr Ala Phe Pro Ala 430 435 440Val Pro Asp Gln Asn Thr Phe Val Asn Leu Gly Leu Asn Ser Arg Pro 445 450 455Thr Phe Phe Gly Cys Asp Pro Lys Asn Ile Ser Gly Thr Ala Pro Leu 460 465 470Val Ile Tyr Leu Pro Asn Ser Pro Tyr Thr Tyr Asp Ser Asn Phe Ser475 480 485 490Thr Phe Lys Leu Thr Tyr Ser Asp Glu Glu Arg Asp Ser Val Ile Thr 495 500 505Asn Gly Trp Asn Val Val Thr Arg Gly Asn Gly Thr Val Asp Asp Asn 510 515 520Phe Pro Ser Cys Val Ala Cys Ala Ile Leu Gln Ala Leu His Tyr Arg 525 530 535Thr Asn Thr Ser Leu Pro Asp Ile Cys Thr Thr Cys Phe Asn Asp Tyr 540 545 550Cys Trp Asn Gly Thr Thr Asn Ser Thr Thr Pro Gly Ala Tyr Glu Pro555 560 565 570Ser Val Leu Ile Ala Thr Ser Gly Ala Ile Lys Ser Val Leu Asp Tyr 575 580 585Ser Val Leu Ala Leu Ala Met Gly Val Ala Ala Phe Met Leu 590 595 600 5 1884 DNA Aspergillus oryzae CDS (1)..(1881) 5atg aag gtc gcc ctg ctc acc tta gca gcg ggc ttg gcc aat gcc gcc 48Met Lys Val Ala Leu Leu Thr Leu Ala Ala Gly Leu Ala Asn Ala Ala -20 -15 -10tcg atc gcc gtc act cca cgg gcg ttc ccc aat gcc cct gat aaa tat 96Ser Ile Ala Val Thr Pro Arg Ala Phe Pro Asn Ala Pro Asp Lys Tyr -5 -1 1 5gct ccc gca aat gtt tcc tgt ccg tcg act cgt ccc agt atc cgc agt 144Ala Pro Ala Asn Val Ser Cys Pro Ser Thr Arg Pro Ser Ile Arg Ser10 15 20 25gcc gcc gcc ctg tcc acc agt gag aag gat tgg ttg caa gtg cgt cgg 192Ala Ala Ala Leu Ser Thr Ser Glu Lys Asp Trp Leu Gln Val Arg Arg 30 35 40aat gag acc ctt gaa ccc atg aag gat ttg ctc ggg cgg ctc aat cta 240Asn Glu Thr Leu Glu Pro Met Lys Asp Leu Leu Gly Arg Leu Asn Leu 45 50 55agc tcc ttt gat gcc tcg ggg tac att gac cgt cat aaa aac aat gca 288Ser Ser Phe Asp Ala Ser Gly Tyr Ile Asp Arg His Lys Asn Asn Ala 60 65 70tcg aat att cca aac gtg gcc att gcc gtt tca ggt ggt ggt tac cgc 336Ser Asn Ile Pro Asn Val Ala Ile Ala Val Ser Gly Gly Gly Tyr Arg 75 80 85gct ttg acc aat ggc gcg ggt gct atc aag gca ttc gat agt cgt acc 384Ala Leu Thr Asn Gly Ala Gly Ala Ile Lys Ala Phe Asp Ser Arg Thr90 95 100 105tcc aac tcc aca gcc cgt gga cag ctc gga ggc ctt ctg cag tcc tct 432Ser Asn Ser Thr Ala Arg Gly Gln Leu Gly Gly Leu Leu Gln Ser Ser 110 115 120act tat cta tcg ggc ctc agt ggt ggt gga tgg ctc gtg ggc tcc gtg 480Thr Tyr Leu Ser Gly Leu Ser Gly Gly Gly Trp Leu Val Gly Ser Val 125 130 135tac atc aac aac ttc acc act atc ggt gac ctg cag gcc agc gac aag 528Tyr Ile Asn Asn Phe Thr Thr Ile Gly Asp Leu Gln Ala Ser Asp Lys 140 145 150gtc tgg gac ttc aag aac tct att ctg gag ggt cct gat gtt aaa cat 576Val Trp Asp Phe Lys Asn Ser Ile Leu Glu Gly Pro Asp Val Lys His 155 160 165ttc caa ctg atc aac act gcc gcg tac tgg aag gat ctg tac gat gcg 624Phe Gln Leu Ile Asn Thr Ala Ala Tyr Trp Lys Asp Leu Tyr Asp Ala170 175 180 185gtg aag gat aag aga aac gcc ggg ttc aac act tcg ttg acc gac tac 672Val Lys Asp Lys Arg Asn Ala Gly Phe Asn Thr Ser Leu Thr Asp Tyr 190 195 200tgg ggc cgt gct ctc tcc tat cag ttc atc aac gct acc act gat gat 720Trp Gly Arg Ala Leu Ser Tyr Gln Phe Ile Asn Ala Thr Thr Asp Asp 205 210 215ggc ggt ccc agt tat acc tgg tcg tcg att gcc ttg ggc gac gat ttc 768Gly Gly Pro Ser Tyr Thr Trp Ser Ser Ile Ala Leu Gly Asp Asp Phe 220 225 230aag aag ggc aag atg ccc atg cct atc ctc gtc gcc gat gga cgt aac 816Lys Lys Gly Lys Met Pro Met Pro Ile Leu Val Ala Asp Gly Arg Asn 235 240 245ccg ggc gaa ata ctt att gga agt aac tcg act gtg tat gaa ttt aac 864Pro Gly Glu Ile Leu Ile Gly Ser Asn Ser Thr Val Tyr Glu Phe Asn250 255 260 265cca tgg gag ttc ggc tcc ttc gac ccg tca gta tac ggc ttt gca cca 912Pro Trp Glu Phe Gly Ser Phe Asp Pro Ser Val Tyr Gly Phe Ala Pro 270 275 280ttg gag tat ctt gga tcc aat ttc gag aac ggt gaa ctc ccc aag ggg 960Leu Glu Tyr Leu Gly Ser Asn Phe Glu Asn Gly Glu Leu Pro Lys Gly 285 290 295gaa tcg tgc gtg cgc ggc ttt gac aat gcg ggt ttt gtc atg ggt acc 1008Glu Ser Cys Val Arg Gly Phe Asp Asn Ala Gly Phe Val Met Gly Thr 300 305 310agc tct tcc ctg ttt aac cag ttc att ctg cgt ctg aac ggc acc gat 1056Ser Ser Ser Leu Phe Asn Gln Phe Ile Leu Arg Leu Asn Gly Thr Asp 315 320 325atc cct aat ttc ctc aag gag gcg att gcc gac gtc ttg gaa cat ctg 1104Ile Pro Asn Phe Leu Lys Glu Ala Ile Ala Asp Val Leu Glu His Leu330 335 340 345ggc gaa aac gat gag gac att gca gtt tac gca ccc aac ccc ttc tac 1152Gly Glu Asn Asp Glu Asp Ile Ala Val Tyr Ala Pro Asn Pro Phe Tyr 350 355 360aaa tat cgc aat tca acg gca gca tat tcg tca acc cca gag ctg gac 1200Lys Tyr Arg Asn Ser Thr Ala Ala Tyr Ser Ser Thr Pro Glu Leu Asp 365 370 375gtg gtc gac gga ggt gaa gat gga cag aac gtg cct cta cac ccg ttg 1248Val Val Asp Gly Gly Glu Asp Gly Gln Asn Val Pro Leu His Pro Leu 380 385 390atc cag ccc acc cac aac gtg gat gtg atc ttt gcc gtg gat tcg tcc 1296Ile Gln Pro Thr His Asn Val Asp Val Ile Phe Ala Val Asp Ser Ser 395 400 405gct gat acg gac cat agc tgg ccc aac gga tcc tcc ttg atc tac acc 1344Ala Asp Thr Asp His Ser Trp Pro Asn Gly Ser Ser Leu Ile Tyr Thr410 415 420 425tat gaa cgt agc ttg aat act aca ggt atc gcc aac ggg acc tcc ttc 1392Tyr Glu Arg Ser Leu Asn Thr Thr Gly Ile Ala Asn Gly Thr Ser Phe 430 435 440cct gcg gtg ccc gac gtc aac acg ttc ctc aac ctt ggc ctg aac aaa 1440Pro Ala Val Pro Asp Val Asn Thr Phe Leu Asn Leu Gly Leu Asn Lys 445 450 455cgc ccg acc ttc ttc gga tgc aat tca tcc aac acc agc acc ccg acc 1488Arg Pro Thr Phe Phe Gly Cys Asn Ser Ser Asn Thr Ser Thr Pro Thr 460 465 470cca ttg att gtc tac ttg ccc aac gcc cct tac acc gcc gag tcc aac 1536Pro Leu Ile Val Tyr Leu Pro Asn Ala Pro Tyr Thr Ala Glu Ser Asn 475 480 485acg tca acc ttc cag ctg gcg tat aag gac caa caa cgc gat gat att 1584Thr Ser Thr Phe Gln Leu Ala Tyr Lys Asp Gln Gln Arg Asp Asp Ile490 495 500 505atc ttg aac ggc tac aac gtc gtc acc cag ggc aat gcc agt gcc gat 1632Ile Leu Asn Gly Tyr Asn Val Val Thr Gln Gly Asn Ala Ser Ala Asp 510 515 520gca aac tgg ccc tcg tgc gtt ggg tgc gct att ctc cag cgg tcc acc 1680Ala Asn Trp Pro Ser Cys Val Gly Cys Ala Ile Leu Gln Arg Ser Thr 525 530 535gaa cgt acg aac act aag ctt ccc gat atc tgc aat acc tgc ttc aag 1728Glu Arg Thr Asn Thr Lys Leu Pro Asp Ile Cys Asn Thr Cys Phe Lys 540 545 550aat tac tgc tgg gac gga aag acc aac agc acc aca ccg gcc ccc tat 1776Asn Tyr Cys Trp Asp Gly Lys Thr Asn Ser Thr Thr Pro Ala Pro Tyr 555 560 565gaa ccg gag cta ttg atg gag gcg tcg act tcc ggg gcc tcg aag gat 1824Glu Pro Glu Leu Leu Met Glu Ala Ser Thr Ser Gly Ala Ser Lys Asp570 575 580 585caa ctg aac cgg aca gct gca gtc atc gcg ttc gca gtt atg ttc ttt 1872Gln Leu Asn Arg Thr Ala Ala Val Ile Ala Phe Ala Val Met Phe Phe 590 595 600atg acg atc tag 1884Met Thr Ile 6 627 PRT Aspergillus oryzae 6Met Lys Val Ala Leu Leu Thr Leu Ala Ala Gly Leu Ala Asn Ala Ala -20 -15 -10Ser Ile Ala Val Thr Pro Arg Ala Phe Pro Asn Ala Pro Asp Lys Tyr -5 -1 1 5Ala Pro Ala Asn Val Ser Cys Pro Ser Thr Arg Pro Ser Ile Arg Ser10 15 20 25Ala Ala Ala Leu Ser Thr Ser Glu Lys Asp Trp Leu Gln Val Arg Arg 30 35 40Asn Glu Thr Leu Glu Pro Met Lys Asp Leu Leu Gly Arg Leu Asn Leu 45 50 55Ser Ser Phe Asp Ala Ser Gly Tyr Ile Asp Arg His Lys Asn Asn Ala 60 65 70Ser Asn Ile Pro Asn Val Ala Ile Ala Val Ser Gly Gly Gly Tyr Arg 75 80 85Ala Leu Thr Asn Gly Ala Gly Ala Ile Lys Ala Phe Asp Ser Arg Thr90 95 100 105Ser Asn Ser Thr Ala Arg Gly Gln Leu Gly Gly Leu Leu Gln Ser Ser 110 115 120Thr Tyr Leu Ser Gly Leu Ser Gly Gly Gly Trp Leu Val Gly Ser Val 125 130 135Tyr Ile Asn Asn Phe Thr Thr Ile Gly Asp Leu Gln Ala Ser Asp Lys 140 145 150Val Trp Asp Phe Lys Asn Ser Ile Leu Glu Gly Pro Asp Val Lys His 155 160 165Phe Gln Leu Ile Asn Thr Ala Ala Tyr Trp Lys Asp Leu Tyr Asp Ala170 175 180 185Val Lys Asp Lys Arg Asn Ala Gly Phe Asn Thr Ser Leu Thr Asp Tyr 190 195 200Trp Gly Arg Ala Leu Ser Tyr Gln Phe Ile Asn Ala Thr Thr Asp Asp 205 210 215Gly Gly Pro Ser Tyr Thr Trp Ser Ser Ile Ala Leu Gly Asp Asp Phe 220 225 230Lys Lys Gly Lys Met Pro Met Pro Ile Leu Val Ala Asp Gly Arg Asn 235 240 245Pro Gly Glu Ile Leu Ile Gly Ser Asn Ser Thr Val Tyr Glu Phe Asn250 255 260 265Pro Trp Glu Phe Gly Ser Phe Asp Pro Ser Val Tyr Gly Phe Ala Pro 270 275 280Leu Glu Tyr Leu Gly Ser Asn Phe Glu Asn Gly Glu Leu Pro Lys Gly 285 290 295Glu Ser Cys Val Arg Gly Phe Asp Asn Ala Gly Phe Val Met Gly Thr 300 305 310Ser Ser Ser Leu Phe Asn Gln Phe Ile Leu Arg Leu Asn Gly Thr Asp 315 320 325Ile Pro Asn Phe Leu Lys Glu Ala Ile Ala Asp Val Leu Glu His Leu330 335 340 345Gly Glu Asn Asp Glu Asp Ile Ala Val Tyr Ala Pro Asn Pro Phe Tyr 350 355 360Lys Tyr Arg Asn Ser Thr Ala Ala Tyr Ser Ser Thr Pro Glu Leu Asp 365 370 375Val Val Asp Gly Gly Glu Asp Gly Gln Asn Val Pro Leu His Pro Leu 380 385 390Ile Gln Pro Thr His Asn Val Asp Val Ile Phe Ala Val Asp Ser Ser 395 400 405Ala Asp Thr Asp His Ser Trp Pro Asn Gly Ser Ser Leu Ile Tyr Thr410 415 420 425Tyr Glu Arg Ser Leu Asn Thr Thr Gly Ile Ala Asn Gly Thr Ser Phe 430 435 440Pro Ala Val Pro Asp Val Asn Thr Phe Leu Asn Leu Gly Leu Asn Lys 445 450 455Arg Pro Thr Phe Phe Gly Cys Asn Ser Ser Asn Thr Ser Thr Pro Thr 460 465 470Pro Leu Ile Val Tyr Leu Pro Asn Ala Pro Tyr Thr Ala Glu Ser Asn 475 480 485Thr Ser Thr Phe Gln Leu Ala Tyr Lys Asp Gln Gln Arg Asp Asp Ile490 495 500 505Ile Leu Asn Gly Tyr Asn Val Val Thr Gln Gly Asn Ala Ser Ala Asp 510 515 520Ala Asn Trp Pro Ser Cys Val Gly Cys Ala Ile Leu Gln Arg Ser Thr 525 530 535Glu Arg Thr Asn Thr Lys Leu Pro Asp Ile Cys Asn Thr Cys Phe Lys 540 545 550Asn Tyr Cys Trp Asp Gly Lys Thr Asn Ser Thr Thr Pro Ala Pro Tyr 555 560 565Glu Pro Glu Leu Leu Met Glu Ala Ser Thr Ser Gly Ala Ser Lys Asp570 575 580 585Gln Leu Asn Arg Thr Ala Ala Val Ile Ala Phe Ala Val Met Phe Phe 590 595 600Met Thr Ile 7 2233 DNA Aspergillus oryzae CDS (79)..(2001) 7gcaattcctt cgacattgct cgaaaaaaaa caacgtgtcg ctctcacgta gaactgtgtg 60cgaccacttc aggtcagt atg aaa ccc aca aca gct gca att gct tta gcc 111 Met Lys Pro Thr Thr Ala Ala Ile Ala Leu Ala -35 -30ggg ttg ctg tct ggc gtg aca gcg gcc cca ggc cct cat gga gaa agg 159Gly Leu Leu Ser Gly Val Thr Ala Ala Pro Gly Pro His Gly Glu Arg -25 -20 -15att gag agg att gat aga act gtg ttg gaa cgt gca ttg cca aat gct 207Ile Glu Arg Ile Asp Arg Thr Val Leu Glu Arg Ala Leu Pro Asn Ala -10 -5 -1 1 5ccc gat gga tat gta ccg tcc aac gtc agt tgt cct gcg aat cgc ccg 255Pro Asp Gly Tyr Val Pro Ser Asn Val Ser Cys Pro Ala Asn Arg Pro 10 15 20acg gtg cgt agc gca tca tcc ggg ctc tcg agc aat gag acc tcg tgg 303Thr Val Arg Ser Ala Ser Ser Gly Leu Ser Ser Asn Glu Thr Ser Trp 25 30 35ttg aaa acc cga cgg gag aag act caa tct gcc atg aaa gat ttc ttc 351Leu Lys Thr Arg Arg Glu Lys Thr Gln Ser Ala Met Lys Asp Phe Phe 40 45 50aac cat gtc acg att aag gac ttt gat gct gtc caa tat ctc gac aac 399Asn His Val Thr Ile Lys Asp Phe Asp Ala Val Gln Tyr Leu Asp Asn 55 60 65cac tcg agt aac acg tcc aat ctt ccc aat att ggt att gcg gtg tct 447His Ser Ser Asn Thr Ser Asn Leu Pro Asn Ile Gly Ile Ala Val Ser70 75 80 85ggt gga ggt tat cgc gcc ctg atg aac ggt gcc gga gcg atc aaa gcg 495Gly Gly Gly Tyr Arg Ala Leu Met Asn Gly Ala Gly Ala Ile Lys Ala 90 95 100ttt gat agc cga acg gag aac tcg acg gcg acg gga cag ttg ggt ggt 543Phe Asp Ser Arg Thr Glu Asn Ser Thr Ala Thr Gly Gln Leu Gly Gly 105 110 115ctg cta cag tcg gcg acg tat ctg gct ggt ctg agt ggt ggt gga tgg 591Leu Leu Gln Ser Ala Thr Tyr Leu Ala Gly Leu Ser Gly Gly Gly Trp 120 125 130ctg gtg ggg tcg atc tat atc aac aat ttc acc acc att tca gca ctg 639Leu Val Gly Ser Ile Tyr Ile Asn Asn Phe Thr Thr Ile Ser Ala Leu 135 140 145cag acc cat gag gat ggt gct gtc tgg cag ttt caa aac tcg att ttt 687Gln Thr His Glu Asp Gly Ala Val Trp Gln Phe Gln Asn Ser Ile Phe150 155 160 165gag ggc cct gac ggc gat agc att cag att ctg gat tct gcg act tac 735Glu Gly Pro Asp Gly Asp Ser Ile Gln Ile Leu Asp Ser Ala Thr Tyr 170 175 180tac aag cac gtt tac gat gca gtg caa gac aag aag gat gcg gga tac 783Tyr Lys His Val Tyr Asp Ala Val Gln Asp Lys Lys Asp Ala Gly Tyr 185 190 195gaa acc tct atc act gat tat tgg ggt cgc gct ctc tct tat caa tta 831Glu Thr Ser Ile Thr Asp Tyr Trp Gly Arg Ala Leu Ser Tyr Gln Leu 200 205 210atc aat gct acc gac ggc ggt ccg agc tat act tgg tcg tcc att gcc 879Ile Asn Ala Thr Asp Gly Gly Pro Ser Tyr Thr Trp Ser Ser Ile Ala 215 220 225cta acc gat aca ttt aag cag gca gat atg ccg atg cct ctc ctc gtt 927Leu Thr Asp Thr Phe Lys Gln Ala Asp Met Pro Met Pro Leu Leu Val230 235 240 245gcc gac ggt cgg tat ccc gat gag ctc gtg gtc agc agc aac gct act 975Ala Asp Gly Arg Tyr Pro Asp Glu Leu Val Val Ser Ser Asn Ala Thr 250 255 260gtc tat gag ttt aac cct tgg gag ttt ggt act ttt gat cca aca gtc 1023Val Tyr Glu Phe Asn Pro Trp Glu Phe Gly Thr Phe Asp Pro Thr Val 265 270 275tac ggg ttt gtg cct cta gaa tac gta ggc tct aaa ttc gac ggt ggt 1071Tyr Gly Phe Val Pro Leu Glu Tyr Val Gly Ser Lys Phe Asp Gly Gly 280 285 290tct atc ccc gac aac gag acc tgt gta cgc gga ttc gac aac gcc ggt 1119Ser Ile Pro Asp Asn Glu Thr Cys Val Arg Gly Phe Asp Asn Ala Gly 295 300 305ttt gtt atg ggt act tcg tca agt ttg ttc aac cag ttc ttc ctg cag 1167Phe Val Met Gly Thr Ser Ser Ser Leu Phe Asn Gln Phe Phe Leu Gln310 315 320 325gtt aac tca act tcg ctt cct gat ttc ctg aag acg gca ttc tcg gac 1215Val Asn Ser Thr Ser Leu Pro Asp Phe Leu Lys Thr Ala Phe Ser Asp 330 335 340atc ttg gca aag att ggt gaa gaa gat gag gac att gct gtc tat gca 1263Ile Leu Ala Lys Ile Gly Glu Glu Asp Glu Asp Ile Ala Val Tyr Ala 345 350 355ccc aac ccg ttc tac aat tgg gcc ccc gtg agc tca cca gca gcc cat 1311Pro Asn Pro Phe Tyr Asn Trp Ala Pro Val Ser Ser Pro Ala Ala His 360 365 370caa cag gaa ctc gat atg gtg gac ggt ggc gag gat ctt cag aac att 1359Gln Gln Glu Leu Asp Met Val Asp Gly Gly Glu Asp Leu Gln Asn Ile 375 380 385cct ctg cat cct tta att cag cca gag cgt cac gta gat gtt atc ttt 1407Pro Leu His Pro Leu Ile Gln Pro Glu Arg His Val Asp Val Ile Phe390 395 400 405gct gtt gac tcc tcc gcc gac acg act tat tct tgg ccc aac ggc aca 1455Ala Val Asp Ser Ser Ala Asp Thr Thr Tyr Ser Trp Pro Asn Gly Thr 410 415 420gct ctc gtt gcc act tac gag cgc agc ctg aac tcc acc ggc atc gct 1503Ala Leu Val Ala Thr Tyr Glu Arg Ser Leu Asn Ser Thr Gly Ile Ala 425 430 435aac gga acc tca ttc ccc gcg atc cct gac cag aat acc ttt gtt aac 1551Asn Gly Thr Ser Phe Pro Ala Ile Pro Asp Gln Asn Thr Phe Val Asn 440 445 450aat ggc ttg aat acg cgg cca acg ttc ttc gga tgt aac agt acg aac 1599Asn Gly Leu Asn Thr Arg Pro Thr Phe Phe Gly Cys Asn Ser Thr Asn 455 460 465acc aca ggc cct acg cct ttg gtt gtc tac ctt ccg aac tat cca tac 1647Thr Thr Gly Pro Thr Pro Leu Val Val Tyr Leu Pro Asn Tyr Pro Tyr470 475 480 485gtg tct tac tcg aac tgg tca acc ttc cag cca agc tat gag atc tcc 1695Val Ser Tyr Ser Asn Trp Ser Thr Phe Gln Pro Ser Tyr Glu Ile Ser 490 495 500gaa aga gac gac acc atc cgc aac gga tat gat gtg gtg acg atg ggt 1743Glu Arg Asp Asp Thr Ile Arg Asn Gly Tyr Asp Val Val Thr Met Gly 505 510 515aac agc act cgt gat ggt aac tgg acg acc tgc gtc ggt tgt gct att 1791Asn Ser Thr Arg Asp Gly Asn Trp Thr Thr Cys Val Gly Cys Ala Ile 520 525 530ctg agt cgg tct ttc gag cgc acg aac acc cag gtt ccg gat gcc tgc 1839Leu Ser Arg Ser Phe Glu Arg Thr Asn Thr Gln Val Pro Asp Ala Cys 535 540 545acc cag tgc ttc cag aag tac tgc tgg gat ggc act acg aac tcc acc 1887Thr Gln Cys Phe Gln Lys Tyr Cys Trp Asp Gly Thr Thr Asn Ser Thr550 555 560 565aac cct gcc gac tat gag cct gtc acc ctg ttg gag gat agt gct ggt 1935Asn Pro Ala Asp Tyr Glu Pro Val Thr Leu Leu Glu Asp Ser Ala Gly 570 575 580tcc gct ctc tcc ccg gct gtc atc acc acc atc gta gcg acc agt gct 1983Ser Ala Leu Ser Pro Ala Val Ile Thr Thr Ile Val Ala Thr Ser Ala 585 590 595gct ctt ttc acc ttg ctg tgagactgga gcaattctgt tggatacggc 2031Ala Leu Phe Thr Leu Leu 600tttctttctc ttttctcttc ccaggaacta cttttatata tattgcgata tatcccgact 2091tttttttttg cttctcttca atttcttcct cctgtgcctt ttagcttgat tgtatttaag 2151ttacatctcg gccttggcac ggtccttttt gaatatattt ctggattacc caaaaaaaaa 2211aaaaaaaaaa aaaaaaaaaa aa 2233 8 641 PRT Aspergillus oryzae 8Met Lys Pro Thr Thr Ala Ala Ile Ala Leu Ala Gly Leu Leu Ser Gly -35 -30 -25Val Thr Ala Ala Pro Gly Pro His Gly Glu Arg Ile Glu Arg Ile Asp -20 -15 -10Arg Thr Val Leu Glu Arg Ala Leu Pro Asn Ala Pro Asp Gly Tyr Val -5 -1 1 5 10Pro Ser Asn Val Ser Cys Pro Ala Asn Arg Pro Thr Val Arg Ser Ala 15 20 25Ser Ser Gly Leu Ser Ser Asn Glu Thr Ser Trp Leu Lys Thr Arg Arg 30 35 40Glu Lys Thr Gln Ser Ala Met Lys Asp Phe Phe Asn His Val Thr Ile 45 50 55Lys Asp Phe Asp Ala Val Gln Tyr Leu Asp Asn His Ser Ser Asn Thr 60 65 70Ser Asn Leu Pro Asn Ile Gly Ile Ala Val Ser Gly Gly Gly Tyr Arg75 80 85 90Ala Leu Met Asn Gly Ala Gly Ala Ile Lys Ala Phe Asp Ser Arg Thr 95 100 105Glu Asn Ser Thr Ala Thr Gly Gln Leu Gly Gly Leu Leu Gln Ser Ala 110 115 120Thr Tyr Leu Ala Gly Leu Ser Gly Gly Gly Trp Leu Val Gly Ser Ile 125 130 135Tyr Ile Asn Asn Phe Thr Thr Ile Ser Ala Leu Gln Thr His Glu Asp 140 145 150Gly Ala Val Trp Gln Phe Gln Asn Ser Ile Phe Glu Gly Pro Asp Gly155 160 165 170Asp Ser Ile Gln Ile Leu Asp Ser Ala Thr Tyr Tyr Lys His Val Tyr 175 180 185Asp Ala Val Gln Asp Lys Lys Asp Ala Gly Tyr Glu Thr Ser Ile Thr 190 195 200Asp Tyr Trp Gly Arg Ala Leu Ser Tyr Gln Leu Ile Asn Ala Thr Asp 205 210 215Gly Gly Pro Ser Tyr Thr Trp Ser Ser Ile Ala Leu Thr Asp Thr Phe 220 225 230Lys Gln Ala Asp Met Pro Met Pro Leu Leu Val Ala Asp Gly Arg Tyr235 240 245 250Pro Asp Glu Leu Val Val Ser Ser Asn Ala Thr Val Tyr Glu Phe Asn 255 260 265Pro Trp Glu Phe Gly Thr Phe Asp Pro Thr Val Tyr Gly Phe Val Pro 270 275 280Leu Glu Tyr Val Gly Ser Lys Phe Asp Gly Gly Ser Ile Pro Asp Asn 285 290 295Glu Thr Cys Val Arg Gly Phe Asp Asn Ala Gly Phe Val Met Gly Thr 300 305 310Ser Ser Ser Leu Phe Asn Gln Phe Phe Leu Gln Val Asn Ser Thr Ser315 320 325 330Leu Pro Asp Phe Leu Lys Thr Ala Phe Ser Asp Ile Leu Ala Lys Ile 335 340 345Gly Glu Glu Asp Glu Asp Ile Ala Val Tyr Ala Pro Asn Pro Phe Tyr 350 355 360Asn Trp Ala Pro Val Ser Ser Pro Ala Ala His Gln Gln Glu Leu Asp 365 370 375Met Val Asp Gly Gly Glu Asp Leu Gln Asn Ile Pro Leu His Pro Leu 380 385 390Ile Gln Pro Glu Arg His Val Asp Val Ile Phe Ala Val Asp Ser Ser395 400 405 410Ala Asp Thr Thr Tyr Ser Trp Pro Asn Gly Thr Ala Leu Val Ala Thr 415 420 425Tyr Glu Arg Ser Leu Asn Ser Thr Gly Ile Ala Asn Gly Thr Ser Phe 430 435 440Pro Ala Ile Pro Asp Gln Asn Thr Phe Val Asn Asn Gly Leu Asn Thr 445 450 455Arg Pro Thr Phe Phe Gly Cys Asn Ser Thr Asn Thr Thr Gly Pro Thr 460 465 470Pro Leu Val Val Tyr Leu Pro Asn Tyr Pro Tyr Val Ser Tyr Ser Asn475 480 485 490Trp Ser Thr Phe Gln Pro Ser Tyr Glu Ile Ser Glu Arg Asp Asp Thr 495 500 505Ile Arg Asn Gly Tyr Asp Val Val Thr Met Gly Asn Ser Thr Arg Asp 510 515 520Gly Asn Trp Thr Thr Cys Val Gly Cys Ala Ile Leu Ser Arg Ser Phe 525 530 535Glu Arg Thr Asn Thr Gln Val Pro Asp Ala Cys Thr Gln Cys Phe Gln 540 545 550Lys Tyr Cys Trp Asp Gly Thr Thr Asn Ser Thr Asn Pro Ala Asp Tyr555 560 565 570Glu Pro Val Thr Leu Leu Glu Asp Ser Ala Gly Ser Ala Leu Ser Pro 575 580 585Ala Val Ile Thr Thr Ile Val Ala Thr Ser Ala Ala Leu Phe Thr Leu 590 595 600Leu 9 30 DNA Artificial Sequence Primer 9tggggccgng cactgtctta ccaactgatc 30 10 29 DNA Artificial Sequence Primer 10ccgttccagc agtacctgtc aaaacacgt 29 11 30 DNA Artificial Sequence Primer 11tttgatatca gacatgaagt tacctgcact 30 12 30 DNA Artificial Sequence Primer 12tttctcgagt cacatcatcc aaaccccaac 30 13 26 DNA Artificial Sequence Primer 13gcnytnccna aygcnccnga yggnta 26 14 21 DNA Artificial Sequence Primer 14rtcyttccar taytcnacng t 21 15 33 DNA Artificial Sequence Primer 15tttagatcta gtcatgaagt tgcctctctt tgc 33 16 30 DNA Artificial Sequence Primer 16gtttaaacta cagcataaac gcagcaacac 30 17 24 DNA Artificial Sequence Primer 17ctcgagggac ccaacttcga ccac 24 18 30 DNA Artificial Sequence Primer 18gtttaaacta cacactgggt tcataagctc 30 19 22 PRT Aspergillus niger 19Ile Val Ser Thr Val Glu Tyr Trp Lys Asp Ile Thr Glu Glu Val Thr1 5 10 15Gly Lys Lys Asn Ala Ala 20

Claims

1. An isolated lysophospholipase comprising:a) a polypeptide encoded by a lysophospholipase encoding part of the DNA sequence cloned into a plasmid present in Escherichia coli deposit number DSM 13004; b) a polypeptide having an amino acid sequence of amino acids 1-600 in SEQ ID NO: 4; c) an analogue of the polypeptide defined in (a) or (b) which has at least 95% sequence homology with said polypeptide; or d) a polypeptide which is encoded by a nucleic acid sequence which hybridizes with a complementary strand of the nucleic acid sequence shown as nucleotides 115-1914 of SEQ ID NO: 3 under hybridization conditions comprising prehybridizing in a solution of 5×SSC, 5×Denhardt's solution, 0.5% SDS and 100 μg/ml of denatured sonicated salmon sperm DNA, followed by hybridization in the same solution for 12 hours at approx. 45° C., followed by washing in 2×SSC, 0.5% SDS for 30 minutes at a temperature of at least 65° C.

2. The lysophospholipase of claim 1 which is native to a strain of Aspergillus.

3. The lysophospholipase of claim 2, which is native to a strain of A. niger.

4. The lysophospholipase of claim 1, comprising a deletion of 25-35 amino acids at the C-terminal end.

5. The lysophospholipase of claim 1, comprising a polypeptide that is encoded by a nucleic acid sequence which hybridizes with a complementary strand of the nucleic acid sequence shown as nucleotides 115-1914 of SEQ ID NO: 3 under hybridization conditions comprising prehybridizing in a solution of 5×SSC, 5×Denhardt's solution, 0.5% SDS and 100 μg/ml of denatured sonicated salmon sperm DNA, followed by hybridization in the same solution for 12 hours at approx. 45° C., followed by washing in 2×SSC, 0.5% SDS for 30 minutes at a temperature of at least 65° C.

6. The lysophospholipase of claim 1, comprising a polypeptide that is encoded by a nucleic acid sequence which hybridizes with a complementary strand of the nucleic acid sequence shown as nucleotides 115-1914 of SEQ ID NO: 3 under hybridization conditions comprising prehybridizing in a solution of 5×SSC, 5×Denhardt's solution, 0.5% SDS and 100 μg/ml of denatured sonicated salmon sperm DNA, followed by hybridization in the same solution for 12 hours at approx. 45° C., followed by washing in 2×SSC, 0.5% SDS for 30 minutes at a temperature of at least 70° C.

7. The lysophospholipase of claim 1, comprising a polypeptide that is encoded by a nucleic acid sequence which hybridizes with a complementary strand of the nucleic acid sequence shown as nucleotides 115-1914 of SEQ ID NO: 3 under hybridization conditions comprising prehybridizing in a solution of 5×SSC, 5×Denhardt's solution, 0.5% SDS and 100 μg/ml of denatured sonicated salmon sperm DNA, followed by hybridization in the same solution for 12 hours at approx. 45° C., followed by washing in 2×SSC, 0.5% SDS for 30 minutes at a temperature of at least 75° C.

8. The lysophospholipase of claim 1, comprising a polypeptide encoded by a lysophospholipase encoding part of the DNA sequence cloned into a plasmid present in Echerichia coli deposit number DSM 13004.

9. The lysophospholipase of claim 1, comprising a polypeptide having an amino acid sequence comprising amino acids 1-600 in SEQ ID NO: 4.

10. A process for hydrolyzing fatty acyl groups in a phospholipid or lysophospholipid, comprising treating the phospholipid or lysophospholipid with the lysophospholipase of claim 1.

11. A process for improving the filterability of an aqueous solution or slurry of carbohydrate origin which contains phospholipid, which process comprises treating the solution or slurry with the lysophospholipase of claim 1.

12. The process of claim 11 wherein the solution or slurry contains a starch hydrolysate.

13. The process of claim 11, wherein the solution or slurry contains a wheat starch hydrolysate.