Transferrin receptor subunit proteins of Neisseria meningitidis

Abstract

The subject of the present invention is a DNA fragment which encodes a protein capable of being recognised by an antiserum against the transferrin receptor of the strain IM2394 or IM2169 of N. meningitidis as well as a process for producing the said protein by a recombinant route. By way of example, such a DNA fragment encodes the tbp1 subunit of the strain IM2394 or IM2169 or the tbp2 subunit of the strain IM2394 or IM2169.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

The subject of the present invention is DNA fragments of Neisseria meningitidis which encodes the transferrin receptor subunits as well as a process for producing each of the subunits by the recombinant route.

Meningitides are generally either of viral origin or of bacterial origin. The bacteria mainly responsible are: N. meningitidis and Haemophilus influenzae , which re respectively implicated in about 40 and 50% of cases of bacterial meningitides.

In France, about 600 to 800 cases of N. meningitidismeningitides are recorded per year. In the United tates, the number of cases is up to about 2,500 to 3,000 per year.

The N. meningitidis species is sub-divided into serogroups according to the nature of the capsular polysaccharides. Although about twelve serogroups exist, 90% of meningitis cases can be attributed to 3 sero-groups: A, B and C.

2. Description of the Related Art

Effective vaccines based on capsular polysaccharides exist for the prevention of meningitides caused by N. meningitidis serogroups A and C. These polysaccharides as they are only slightly or not at all immunogenic in children below 2 years and do not induce immunological memory. However, these disadvantages can be overcome by conjugating these polysaccharides with a carrier protein.

In contrast, the polysaccharide of N. meningitidis group B is not at all or is only slightly immunogenic in man whether it is in conjugated form or not. Thus it appears highly desirable to seek out a vaccine against meningitides induced by N. meningitidis especially of the serogroup B other than a polysaccharide-based vaccine.

To this end, various proteins of the outer membrane of N. meningitidis have already-been proposed. These are in particular the membrane receptor for human transferrin.

In general, the great majority of bacteria require iron for their growth and they have developed specific systems for acquiring this metal. With regard especially to N. meningitidis which is a strict pathogen for man, the iron can only be derived from human iron transport proteins such as transferrin and lactoferrin since the quantity of iron in free form is negligible in man (of the order of 10 −18 M), in any case insufficient to permit bacterial growth.

Thus, N. meningitidis has a human transferrin receptor and a human lactoferrin receptor which enable it to bind these iron-chelating proteins and subsequently to capture the iron required for its growth.

The transferrin receptor of the strain B16B6 of N. meningitidis has been purified by Schryvers et al. (WO 90/12591) from a membrane extract. This protein, as purified, appears to consist essentially of 2 types of polypeptides: a polypeptide with a high apparent molecular weight of 100 kD and a polypeptide with a lower apparent molecular weight of about 70 kD, as visualised after SDS-polyacrylamide gel electrophoresis.

The purification product especially identified by Schryvers is by arbitrary definition and for the purposes of the present patent application, called transferrin receptor and its constituent polypeptides, subunits. In the text which follows, the subunits of high molecular weight and of lower molecular weight are called Tbp1 and Tbp2 respectively.

However, the purification process described by Schryvers et al. cannot be used for the large-scale production of the transferrin receptor. The industrial preparation of this receptor in purified form necessarily involves a production step using a heterologous expression system.

SUMMARY OF THE INVENTION

To this end, the object of the invention is to provide DNA fragments which encode the transferrin receptor subunits of N. meningitidis.

Moreover, since the pioneering work of Schryvers et al., it has been discovered that there are in fact at least 2 types of strains which differ by the constitution of their respective transferrin receptors. This was demonstrated by studying membrane extracts of several tens of N. meningitidis strains of diverse origins. These membrane extracts were first subjected to an SDS-polyacrylamide gel electrophoresis and then electrotransferred onto nitrocellulose membranes. These nitrocellulose membranes were incubated:

a) in the presence of a rabbit antiserum directed against the transferrin receptor purified from the strain B16B6 of N. meningitidis , also called IM2394;

b) in the presence of a rabbit antiserum directed against the transferrin receptor purified from the strain IM2169 of N. meningitidis ; or

c) in the presence of peroxydase-conjugated human transferrin.

With regard to a) and b), the recognition of the transferrin receptor subunits is visualised by the addition of a peroxydase-coupled anti-rabbit immunoglobulin antibody and then by the addition of the substrate for this enzyme.

Tables I and II below show the profile of some representative strains as it appears on a 7.5% polyacrylamide gel after SDS gel electrophoresis; the bands are characterised by their apparent molecular weights expressed in kilodaltons (kD):

	TABLE I
	Strains
	2394 (B; 2a;P1.2:L2,3)	2234 (Y; nd)
	2228 (B; nd)	2154 (C; nd)	550 (C; 2a:)
	2170 (B; 2a:P1.2:L3)	2448 (B; nd)	179 (C; 2a:P1.2)
Detection	93	93	99
with
anti-2394
receptor
antiserum	68	69	69
Detection	93	93	99
with
anti-2169
receptor
antiserum
Detection	68	69	69
with
transferrin-
peroxydase
N.B. In brackets are indicated in order the serogroup, the serotype, the subtype and the immunotype.

	TABLE II
	Strains
	2169	1000	1604	132	1001	876	1951	2449	867
	(B:9:P1.9)	(B:nd)	(B:nd)	(C:15:P:1.16)	(A:4:P1.9)	(B:19:P1.6)	(A:nd)	(B:nd)	(B:2b:P1.2)
Detection with anti-2394	96	98	98	98	98	96	94	94	93
receptor antiserum
Detection with anti-2169	96	98	98	98	98	96	94	94	93
receptor antiserum	87	85	83	81	79	88	81	85	85
Detection with traneferrin-	87	85	83	81	79	88	87	85	85
peroxydase
N.B. In brackets are indicated in order the serogroup, the serotype, the subtype and the immunotype.

The results entered in the first 2 lines of the tables show that there are 2 types of strains:

The first type (Table I) corresponds to strains which possess a receptor whose 2 subunits, under the experimental conditions used, are recognised by the anti-IM2394 receptor antiserum whereas only the high molecular weight subunit is recognised by the anti-IM2169 receptor antiserum.

The second type (Table II) corresponds to strains which possess a receptor whose 2 subunits, under the experimental conditions used, are recognised by the anti-I2169 receptor antiserum whereas only the high molecular weight subunit is recognised by the anti-IM2394 receptor antiserum.

Consequently, an antigenic diversity exists at the level of the subunit of lower molecular weight. This diversity is however limited since it is of 2 main types, contrary to what is suggested by Griffiths et al., FEMS Microbiol. Lett. (1990) 69:31.

By virtue of these observations, it could have been supposed. that an effective vaccine against all N. meningitidis infections could be adequately made up of the high molecular weight subunit, irrespective of the strain from which the receptor originates, since the said subunit is recognised by the 2 types of antisera. However, it appears that this cannot be the case since the high molecular weight subunit is thought-to be incapable of inducing the production of neutralising type anti-bodies. Only the smallest of the 2 receptor subunits is thought to be capable of performing this function. Since this subunit of lower molecular weight is characterised by a significant antigenic variation from the first type to the second type of strain, a single type of transferrin receptor could not be sufficient for vaccinating against all N. meningitidis infections. Consequently, a vaccine should contain at least the subunit of lower molecular weight of each of the strains IM2394 and IM2169 or their respective equivalents and, optionally, the high molecular weight subunit of at least one N. meningitidis strain.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 represents the structure of the phage lambda ZAP II and schematically represents the cloning methodology relating thereto. Lambda ZAP II is an insertion vector equipped with multiple cloning sites located in the plasmid portion (pBluescript SK). This plasmid portion may be excised in vivo by coinfection with a helper phage and converted into plasmid vector. If a coding sequence is fused in phase with lacZ or if a cloned DNA fragment contains a promoter which is functional in E. coli , there may be production of a protein of interest which can be connected by means of specific antibodies.

FIG. 2 represents the structure of the plasmid pTG1265. pTG1265 is derived from the plasmid pGB2 (Churchward et al., Gene (1984) 21:165) as follows: pGB2 is digested with EcoRI and HindIII, treated with Klenow polymerase and the ligated into the 1-kb SspI-PvuII fragment obtained from pT7T3 184 (Mead et al., Protein Engineering (1986) 1:67; Pharmacia) which contains fl-ori, the sequence lacZ, the promoters T3 and T7 as well as multiple cloning sites.

FIG. 3 represents the genomic map of the DNA region of the strain IM2394 containing the sequences which encode Tbp1 and Thp2 as well as the different fragments which were cloned. B=BamH1; E=EcoRI; H=HincII; R=EcoRV; X=XbaI; C=ClaI.

FIG. 4 represents the genomic map of the DNA region of the strain IM2169 containing the sequences which encode TBP1 and TBP2 as well as the different fragments which were cloned. C=ClaI; H=HincII; M=MluI; X=XbaI; ?=imprecise position.

FIG. 5 represents the structure of the plasmid pARA13. pARA13 is a plasmid capable of replicating in E. coli which contains the promoter of the arabinose operon BAD (ParaB) of Salmonella typhimutium (modified at the level of the TATA box), as well as the AraC gene. Downstream of the promoter ParaB are multiple insertion sites. The pARA plasmid series is described by Cagnon et al., Prot. Eng. (1991) 4: 843.

FIG. 6 represents the methodology which was used to construct the expression vector pTG3749.

FIGS. 7A and 7B compare the predicted amino acid sequences of the Tbp1 subunits of the strains IM2394 SEQ ID NO:4 and IM2169 SEQ ID NO:6. The degree of homology may be estimated at about 76%.

FIGS. 8A and 8B compare the predicted amino acid sequences of the Tbp subunits of the strains IM2394 SEQ ID NO:2 and IM2169 SEQ ID NO:8. The degree of homology may be estimated at about 47%.

FIG. 9 represents the methodology which was used to construct the expression vector pTG3779.

FIG. 10 represents the methodology which was used to construct the expression vector pTG4710.

FIG. 11 represents the methodology which was used to construct the expression vector pTG4764.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVENTION

Accordingly, the invention provides an isolated DNA fragment which encodes a peptide, a polypeptide or a protein capable of being recognised by an antiserum against the receptor of the strain IM2394 or IM2169 of N. meningitidis.

Such a DNA fragment may especially comprise a nucleotide sequence which encodes an amino acid sequence, homologous to that shown:

in the sequence identifier (SEQ ID NO:1) No. 1, starting with the cysteine residue in position 1 and ending with the glutamine residue in position 579;

in SEQ ID NO:3, starting with the glutamic acid residue in position 1 and ending with the phenylalanine residue in position 884;

in SEQ ID NO:5, starting with the glutamic acid residue in position 1 and ending with the phenylalanine residue in position 887; or

in SEQ ID NO:7, starting with the cysteine residue in position 1 and ending with the glutamine residue in position 691.

For guidance, it is specified that a DNA fragment according to the invention may furthermore comprise an additional nucleotide sequence which encodes any other amino acid sequence; the two nucleotide sequences considered forming an open reading frame so as to encode a hybrid protein or a precursor.

Advantageously, a DNA fragment according to the invention may be selected from:

i) A first isolated DNA fragment having a nucleotide sequence which encodes a protein having an amino acid sequence homologous to that shown in SEQ ID NO: 2, starting with the cysteine residue in position 1 and ending with the glutamine residue in position 579.

ii) A second isolated DNA fragment having a nucleotide sequence which encodes a protein having an amino acid sequence homologous to that shown in SEQ ID NO:4, starting with the glutamic acid residue in position 1 and ending with the phenylalanine residue in position 884.

iii) A third isolated DNA fragment having a nucleotide sequence which encodes a protein having an amino acid sequence homologous to that shown in SEQ ID NO:6, starting with the glutamic acid residue in position 1 and ending with the phenylalanine residue in position 887.

iv) A fourth isolated DNA fragment having a nucleotide sequence which encodes a protein having an amino acid sequence homologous to that shown in SEQ ID NO:8, starting with the cysteine residue in position 1 and ending with the glutamine residue in position 691.

“Homologous amino acid sequence” is understood to mean a sequence which exhibits a degree of homology of at least 75%, advantageously of at least 80%, preferably of at least 90%, most preferably of 100%, with the amino acid sequence which is cited as reference. It should be noted that the term“homologous” as defined includes the special case of the identity.

The degree of homology can be easily calculated by aligning the sequences so as to obtain the maximum degree of homology; to do this, it may be necessary to artificially introduce empty spaces as illustrated in FIG. 7 . Once the optimal alignment has been achieved, the degree of homology is established by recording all the positions in which the amino acids of the two sequences coincide, relative to the total number of positions.

It would be tedious to describe homologous sequences otherwise than in a generic manner because the number of combinations is too great. However, persons skilled in the art know the general rules which make it possible to replace one amino acid with another without destroying the biological or immunological function of a protein.

An isolated and most preferred DNA fragment has a nucleotide sequence which encodes:

i) The Tbp1 subunit of the strain IM2394 whose amino acid sequence is as shown in SEQ ID NO:4, starting with the glutamic acid residue in position 1 and ending with the phenylalanine residue in position 884;

ii) the Tbp2 subunit of the strain IM2394 whose amino acid sequence is shown in SEQ ID NO:2, starting with the cysteine residue in position 1 and ending with the glutamine residue in position 579;

iii) the Tbp1 subunit of the strain IM2169 whose amino acid sequence is shown in SEQ ID NO:6, starting with the glutamic acid residue in position 1 and ending with the phenylalanine residue in position 887; or

iv) the Tbp2 subunit of the strain IM2169 whose amino acid sequence is shown in SEQ ID NO:8, starting with the cysteine residue in position 1 and ending with the glutamine residue in position 691.

The transferrin receptor being a membrane protein, each of its subunits is initially produced in the form of a precursor consisting of a signal peptide associated, in the N-terminal position, with the mature form.

Accordingly, the subject of the present invention is also an isolated DNA unit which encodes a signal peptide whose amino acid sequence exhibits a degree of homology of at least 80%, preferably of 100%, with the sequence shown in:

i) SEQ ID NO:4, starting with the methionine residue in position −24 and ending with the alanine residue in position −1;

ii) SEQ ID NO:6, starting with the methionine residue in position −24 and ending with the alanine residue in position −1; or

iii) SEQ ID NO:8, starting with the methionine residue in position −20 and ending with the alanine residue in position −1.

A DNA fragment according to the invention may also be selected from a fifth, sixth, seventh and eighth DNA fragment which respectively encode a precursor whose amino acid sequence is homologous to the sequence presented in SEQ ID NO:2, 4, 6 or 8.

“Isolated DNA fragment or unit” is understood to mean a DNA fragment or unit of genomic origin which is i) inserted into a viral or plasmid vector or ii) placed under the control of a promoter which, for its part, is heterologous.

Furthermore, the DNA unit which encodes the signal peptide according to the invention is, in addition, considered as isolated when this DNA unit is associated with a DNA fragment which encodes a protein heterologous to the signal peptide so as to form an open reading frame which encodes a hybrid precursor.

The invention also relates to a cassette for expressing a peptide, a polypeptide or a protein capable of being recognised by an antiserum against the receptor of the strain IM2394 or IM2169 of N. meningitidis , which comprises at least one DNA fragment according to the invention placed under the control of elements capable of bringing about its expression in an appropriate host cell.

In the expression cassette, the first, second, third or fourth DNA fragment according to the invention which encodes a mature form may be associated or not with a DNA unit which encodes a signal peptide depending on whether or not the secretion of the protein is sought. Preferably, this secretion will be sought. In this last case, the DNA unit may encode a signal peptide homologous or heterologous to the mature form, resulting in the synthesis of a natural or hybrid precursor respectively.

The elements essential for the expression of a DNA fragment according to the invention are a transcription promoter, translational start and stop codons and optionally, a transcription terminator. The promoter may be constitutive or inducible. It should be pointed out that the DNA fragment which encodes the Tbp2 subunit of the strain IM2394 appears to be toxic for a heterologous cell, especially for E. coli . In such a case, it may be preferable to use an inducible promoter, for example the araB gene promoter of Salmonella thyphimurium.

Elements such as a DNA unit which encode a heterologous signal peptide (signal region) or a promoter already exist in fairly large number and are known to a person skilled in the art. His general expertise will enable him to choose a signal region or a specific promoter which will be adapted to the host cell in which he envisages the expression.

More particularly, it should be noted that the Tbp2 subunit appears to be a lipoprotein since its precursor contains a signal peptide characteristic of lipoprotein precursors and because it possesses a cysteine in the NH 2 -terminal position and amino acids with a strong tendency to adopt a“turn” type conformation slightly downstream of the NH 2 -terminal cysteine (4 glycines). For reference, see Wu & Tokunaga, Current Top. Microb. Immunol. (1986) 125: 127. The lipidation might enhance the immunogenicity of the Tbp2 subunit.

Thus, in a prokaryotic system, it would be desirable to obtain the Tbp2 subunit either from its natural precursor or from a precursor which comprises a suitable heterologous signal peptide which permits the lipidation; that is to say a signal peptide of a lipoprotein other than Tbp2. Such a signal peptide has especially the characteristic of being liberated by cleavage of the precursor with a type II signal peptidase. The sequence at the cleavage site of the signal peptide corresponds to the consensus sequence (L, V, I) (A, S, T, G) (G, A) C, cysteine (C) being the first amino acid of the mature sequence. By way of example of heterologous signal peptide, there may be mentioned especially those of the lipoproteins ColE1, ColE3, Lpp, NlpA, OsmB, Pal, RlpB and TraT whose sequences are presented in SEQ ID NO:9 to 24 respectively, as well as the corresponding nucleotide sequences.

Consequently, according to a specific embodiment, an expression cassette according to the invention, intended for the production of a protein having an amino acid sequence homologous to that shown:

in SEQ ID NO:2, starting with the cysteine residue in position 1 and ending with the glutamine residue in position 579 or

in SEQ ID NO:8. starting with the cysteine residue in position 1 and ending with the glutamine residue in position 691; comprises:

i) a DNA unit which encodes a signal peptide of a lipoprotein other than the Tbp2 subunit, such as the signal peptide RlpB and

ii) a DNA fragment which encodes the said protein.

Finally, the invention provides (i) a process for producing a peptide, a polypeptide or a protein capable of being recognised by an antiserum against the receptor of the strain IM2394 or IM2169 of N. meningitidis , according to which a host cell containing an expression cassette according to the invention is cultured and the said peptide, polypeptide or protein is recovered from the culture; as well as (ii) the peptide, polypeptide or protein produced by this process and (iii) pharmaceutical, especially vaccinal, compositions containing them.

For the purposes of the process according to the invention, the host cell may be a mammalian cell, a yeast or a bacterium, the latter being preferred. In this case also, the choice of a specific line is within the scope of a person skilled in the art.

Alternatively, a pharmaceutical composition according to the invention may contain, as active ingredient, a viral or bacterial vector in whose genome is inserted a DNA fragment according to the invention, placed under the control of the elements required for its expression. By way of example of appropriate vector, there may be mentioned especially pox viruses, adenovirus. and lactic acid bacteria.

A pharmaceutical composition according to the invention is especially useful for the treatment or prevention of an N. meningitidis infection. It may be manufactured in a conventional manner. In particular, a therapeutically effective amount is combined with a carrier or a diluent. It may be administered by any conventional route in usage in the field of the art, e.g. in the field of vaccines, especially enterally or parenterally. The administration may be made in a single dose or repeated after a certain period of time. The route of administration may vary as a function of various parameters, for example the individual treated (condition, age and the like). A composition may, in addition, contain a pharmaceutically acceptable adjuvant.

In order to determine the object of the present invention, it should be specified that the strains IM2394 (also called B16B6) and IM2169 (also called M982) of N. meningitidis are openly available from the Collection de Institut Pasteur, 25 rue de Dr Roux 75015 Paris, under the registration numbers CIP7908 and CIP7917 respectively.

An antiserum specific for the transferrin receptor of the strain IM2394 or IM2169 of N. meninitidis may be obtained as described in the examples below.

EXAMPLE 1

Cloning of the DNA Fragments which Encode the Tbp1 and Tbp2 Subunits of the Transferrin Receptor of the Strain IM2394

1A—Culture of the Strain and Purification of the Transferrin Receptor

A freeze-dried product of the strain IM2394 of N. meningitidis is taken up in about 1 ml of Muller-Hinton broth (MHB, Difco). The bacterial suspension is then plated on the solid Muller-Hinton medium containing boiled blood (5%).

After incubating for 24 h at 37° C. in an atmosphere containing 10% CO 2 , the bacterial layer is recovered in order to inoculate 150 ml of MHB, pH 7.2, distributed into 3 250-ml Erlenmayer flasks. The incubation is continued for 3 h at 37° C., with stirring. Each of the 3 cultures thus produced makes it possible to inoculate 400 ml of MHB, pH 7.2, supplemented with 30 μm ethylenediamine-di(o-hydroxyphenylacetic acid), (EDDHA, Sigma) which is an iron-chelating agent in free form.

After culturing for 16 h at 37° C. with stirring, the cultures are checked for their purity by examination under a microscope after Gram staining. The suspension is centrifuged, the pellet containing the pathogenic micro-organisms is weighed and preserved at −20° C.

The purification is carried out essentially according to the method described by Schryvers et al. (supra), as follows:

The bacterial pellet is thawed and then resuspended in 200 ml of 50 mM Tris-HCl buffer, pH 8.0 (buffer A). The suspension is centrifuged for 20 min at 15,000×g at 4° C. The pellet is recovered, then resuspended in buffer A to a final concentration of 150 g/l. 150-ml fractions are treated for 8 min at 800 bars in a cell breaking device operating under high pressure (Rannie, model 8.30H). The cell lysate thus obtained is centrifuged for 15 min at 4° C. at 15,000×g. The supernatant is recovered and then centrifuged for 75 min at 4° C. at 200,000×g. After removal of the supernatant, the pellet is taken up in buffer A and after protein assay according to Lowry, the concentration of the suspension is adjusted to 5 mg/ml.

To 1.4 ml of the membrane suspension are added 1.75 mg of human tranferrin biotinylated according to the process described by Schryvers. The final concentration of the membrane fraction is 4 mg/ml. The mixture is incubated for 1 hour at 37° C. and then centrifuged at 100,000×g for 75 minutes at 4° C. The membrane pellet is taken up in buffer A containing 0.1 M NaCl and incubated for 60 minutes at room temperature.

After solubilisation, a certain volume of 30% N-lauroylsarcosine (w/v) and 500 mM EDTA is added to this suspension so that the final sarkosyl and EDTA concentrations are 0.5% and 5 mM respectively. After incubating for 15 minutes at 37° C., with stirring, 1 ml of strepavidin-agarose (Pierce), previously washed in buffer A, is added. The suspension is incubated for 15 minutes at room temperature and then centrifuged at 1,000×g for 10 minutes. The resin is then packed into a column and the direct eluate is discarded.

The resin is washed with 3 column volumes of 50 mM Tris-HCl buffer, pH 8.0, containing 1 M NaCl, 10 mM EDTA, 0.5% sarkosyl (buffer B) and then with a column volume of buffer B containing 750 mM guanidine-HCl. The transferrin receptor is then eluted with buffer B containing 2 M guanidine-HCl. The eluate is collected as fractions, in tubes containing an identical volume of 50 mM Tris-HCl, pH 8.0, 1 M NaCl. The optical density at 280 nm of the eluate is measured at the column outlet by means of a UV detector.

The fractions corresponding to the elution peak are recovered, dialysed against 10 mM phosphate buffer, pH 8.0, containing 0.05% sarkosyl and freeze-dried. The freeze-dried product is taken up in water to a concentration 10 times higher. The solution is dialysed a second time against 50 mM phosphate buffer, pH 8.0, containing 0.05% sarkosyl (buffer C) and then the solution is filtered on a membrane of porosity 0.22 μm.

The protein content is determined and adjusted to 1 mg/ml by addition of buffer C, under aseptic conditions. This preparation is preserved at −70° C.

1B—Preparation of an Antiserum Specific for the Transferrin Receptor

New Zealand albino rabbits receive subcutaneously and intramuscularly 100 μg of the IM2394 receptor in the presence of complete Freund's adjuvant. 21 days and 42 days after the first injection, the rabbits again receive 100 μg of the purified receptor but this time in the presence of incomplete Freund's adjuvant. 15 days after the last injection, serum is collected from the animals and then decomplementised and filtered on a membrane of porosity 0.45 μm. The filtrate is subsequently exhausted by contact with the strain IM2394 which, in order to do this, was cultured beforehand in the presence of iron in free form (under these conditions, the synthesis of the transferrin receptor is repressed). The conditions of contact are as follows:10 ml of filtrate are added to 10 10 cfu (colony-forming units) of a culture of the strain IM2394. The adsorption is continued overnight at 4° C., with stirring. The bacteria are then removed by centrifugation. The supernatent is recovered and then again subjected to 2 successive adsorption operations as described above.

1C—Determination of the Peptide Sequences which Permit Identification of the DNA Fragments.

Aliguot fractions of the material obtained in 1A are dried and then resolubilised in two times concentrated Laemmli buffer (65 mM Tris, 3% SDS, 10% glycerol, 5% 2-mercaptoethanol). An equivalent volume of water is added.

After sonication, the material is heated at 90° C. for 2 minutes and then subjected to a polyacrylamide gel electrophoresis. The subunits thus separated are transferred onto PVDF membrane (Immobilon, Millipore) for 16 hours at 400 mA in 50 mM Tris-borate buffer, pH 8.3. The electrotransferred subunits are stained with amido black and the bands corresponding to Tbp1 and Tbp2 are recovered and subjected to microsequencing of the N-terminal end.

This is repeated several times in order to establish the following N-terminal consensus sequences:

Tbp1 IM2394: EXVQAEQAQEKQLDTIQV (SEQ ID NO:25)

Thp2 IM2394: XLXXXXSFDLDSVEXVQXMX (SEQ ID NO:25)

(X=undetermined amino acid).

In order to sequence the internal regions of Tbp2, the protein on PVDF membrane is subjected to trypsin digestion in 0.1 M Tris buffer, pH 8.2. After reacting for 4 hours at 37° C., the peptides are extracted with 70% formic acid and then with 0.1% trifluoroacetic acid (TFA). These peptides are then separated by HPLC.

For Tbp2 IM2394, the internal sequences which were established are the following:

S1122: NNIVLFGPDGYLYYK (SEQ ID NO:27)

S1125: YTIQA (SEQ ID NO:28)

″770: DGENAAGPATEXVIDAYR (SEQ ID NO:29)

S″766: XQIDSFGDVK (SEQ ID NO:30)

S1126: AAFXXXI (SEQ ID NO:31)

S″769: XNXXMFLQGVR(SEQ ID NO:32)

S″771: TPVSDVAAR (SEQ ID NO:33)

S″767: XSPAFT (SEQ ID NO:34)

S″762: NAIEMGGSFXFPGNAPEG (K) (SEQ ID NO:35)

S″1128: XQPESQQDVSENX (SEQ ID NO:36)

1D—Preparation of the Genoamic DNA

The bacterial pellet obtained in 1A is resuspended in about 25 ml of solution A (25 mM Tris-HCl, pH 8, containing 50 mM glucose and 10 mM EDTA) supplemented with 10 mg of proteinase K. The mixture is left for 10 minutes at room temperature.

Then 12.5 ml of solution A containing 10 mg of lysozyme are added. The mixture is yet again left for 10 minutes at room temperature. The mixture is then topped up with 0.5 ml of 10% sarkosyl. The mixture is incubated for 10 minutes at +4° C.

2 mg of RNase are then added and the incubation is continued for 90 minutes at 37° C. The DNA is purified by four successive phenol extractions. The DNA present in the final aqueous phase is precipitated with ethanol. High molecular weight DNA is obtained by CsCl gradient separation.

1E—Cloning

A first DNA library was prepared in the lambda ZAP vector (FIG. 1 ), as follows:

A genomic DNA preparation was fragmented by ultrasonic treatment. The ends of the fragments thus obtained were made blunt by treatment with T 4 polymerase. The fragments were methylated. After methylation, the fragments were linked to EcoRI adaptors, treated with EcoRI and then inserted into the EcoRI site of phage lambda ZAP II (Stratagene).

The strain XL1-blue of E. coli (Stratagene) was infected with the DNA library thus prepared. The white lysis plaques (presence of recombinant phages) were tested using an antiserum specific for the transferrin receptor of the strain IM2394 prepared as described in 1B. This made it possible to identify two lambda ZAP II clones. The pBluescript plasmids contained in these clones were excised by coinfection with helper phage and were called pBM1 and pBMT2.

The plasmids pBMT1 and pBMT2 each contain an EcoRI-EcoRI fragment of 3.8 kb and 1.3 kb respectively. They are presented in FIG. 3 .

Sequencing of the EcoRI-EcoRI insert of pBMT1 was carried out according to the shotgun method (Bankier and Barrell, Biochemistry (1983) B5: 508), as follows:

The EcoRI-EcoRI insert of pBMT1 was purified and then fragmented by ultrasonic treatment. The ends of the fragments thus obtained were made blunt by treatment with T 4 polymerase. The fragments thus treated were introduced into a site of the phage M13TG131 (described in Kieny et al., Gene (1983) 26: 91). About 200 clones obtained from this preparation were sequenced. Computer analysis of these sequences made it possible to reconstitute the complete sequence of the EcoRI-EcoRI insert of pBMT1

The sequence encoding the N-terminal end of Tbp1 was localised as shown in FIG. 3 . Given the molecular mass of Tbp1 it was clear that this insert did not contain the complete DNA fragment which encodes Tbp1. An open reading frame was identified upstream of the 5″ end of the tbp1 gene but it was not possible to clearly identify the region which encodes the N-terminal end of the tbp2 gene.

Microsequencing of the internal regions of Tbp2 was therefore affirmed as reported above in 1C. The internal sequences which were localised towards the C-terminal end indeed corresponded to the 3′ portion of the open reading frame upstream of tbp1.

Furthermore, the genomic DNA of the strain IM2394, previously digested with HincII, was analysed by Southern blotting using a radioactive DNA probe corresponding to the 1.5-kb HincIl-HincII region of the 3.8-kb insert-of pBMT1; two bands were thus visualised. This made it possible to demonstrate that the insert carried by pBMT1 resulted from an artefactual assembly of sequences obtained from two distinct loci. The 5′ sequence of tbp2 was therefore absent.

The above-described genomic DNA library in lambda ZAP was again screened, this time using the EcoRI-EcoRI insert of pBMT2 as probe. 29 candidates were retained among about 200,000 plaques tested. Only the derived plasmid pTG2749 appeared to possess a-new insert relative to pBMT1 and pBMT2. The insert of pTG2749 is as represented in FIG. 3 . The region of the insert upstream of the EcoRV site (EcoRV-EcoRI region) was subcloned into M13TG131 and sequenced by the method of Sanger et al., PNAS (1977) 74: 5463 using synthetic primers. The sequence corresponding to the N-terminal end of Tbp2 was thus obtained.

The sequence of the DNA fagment which encodes Tbp2 of the strain IM2394 is presented in SEQ ID NO:1 as well as the corresponding amino acid sequence.

Just upstream of the sequence which encodes mature Tbp2, the insert of pTG2749 contains a distinct genomic region obtained from another locus. In this case also, it is a cloning artefact analogous to that detected in the case of pBMT1.

Given the rearrangements observed and the absence of 3′ sequences of tbp1 and 5′ sequences of tbp2, the genomic DNA library constructed in lambda ZAP was judged unsuitable for continuing the cloning.

A second genomic DNA library was therefore constructed in a low-copy number plasmid as follows: a genomic DNA preparation was partially digested with Sau3A. DNA fragments of about 4 to 6 kb were purified after sucrose gradient fractionation and inserted into the BamHIl site of the plasmid pTG1265. This plasmid preparation was used to transform the strain 5K of E. coli . It was estimated that this library contained about 18,000 independent clones.

About 50,000 clones from the second library were tested using a radioactive probe corresponding to the EcoRI-EcoRI insert of pBMT2. Only one clone was observed, that is to say the plasmid pTG2759 which has a 1.8-kb insert. The size of this insert was judged to be insufficient to contain the complete gene which encodes Tbp1.

A third DNA library was constructed according to the method described in the preceding paragraph except for the strain 5K of E. coli which was replaced by the strain SURE of E. coli (Stratagene). It was estimated that this library contained about 60,000 independent clones.

About 70,000 clones from the third DNA library were tested using a radioactive probe corresponding to the 2.4-kb KluI-HincII fragment obtained from the insert of pTG2754 described in Example 2 below and represented in FIG. 4 . Two clones were detected, that is to say the plasmids pTG2780 and pTG2781, represented in FIG. 3 .

The sequence of the inserts of pTG2780 and pTG2781 was established according to the Sanger method. It is presented in SEQ ID NO:3 as well as the corresponding amino acid sequence.

A fourth library was constructed. The genomic DNA was digested with Sau3A and a fraction containing fragments of about 7 kb was purified on a sucrose gradient. This fraction contained a fragment corresponding to the locus tbp1,2 since it was recognised by a DNA probe specific for tbp2. After digestion with EcoRV and XbaI and ligation into pTG1265 digested with SmaI and XbaI, E. coli 5K was transformed. The clones were screened using a probe specific for tbp2. Among a series of positive clones, the plasmid pTG3791 was studied in particular and was found to contain tbp2 5′ sequences including the sequence which encodes the putative signal peptide of Tbp2.

EXAMPLE 2

Cloning of the DNA Fragments which Encode the Tbp1 and Tbp2 Subunits of the Transferrin Receptor of the Strain IM2169.

2A—The culture of the strain IM2169 and the purification of the transferrin receptor were performed under conditions identical to those described in Example 1A.

2B—The preparation of an antiserum against the receptor of the strain IM2169 was carried out according to the procedure described in Example 1B.

2C—The peptide sequences permitting the identification of the DNA fragments were determined according to the method reported in Example 1C. The microsequences which were established are the following.

Consensus sequence of the N-terminal end of Tbp1: ENVQAGQAQEKQLXXIQVX (SEQ ID NO:37)

Sequences of the internal peptides of Tbp1:

S1031: XLS(E,W)NAGXVLXPADX (SEQ ID NO:38)

S1032: QLDTQVK (SEQ ID NO:39)

S1033: TAGSSGAINEIEYENXX (SEQ ID NO:40)

S1034: YVTWENVDXXXXXX (SEQ ID NO:41)

Consensus sequence of the N-terminal end of Tbp2: SLVXAXSFDLXSV (SEQ ID NO:42)

Sequences of the internal peptides of Tbp2:

SLVXAXSFDLXSV (SEQ ID NO:42)

S1037: XXDNLSNAX (SEQ ID NO:43)

S1035: XGDDGYIFYXGEKPX (SEQ ID NO:44)

S1036: XQGXYGFAMX (SEQ ID NO:45)

S1040: XQATGHENFQYVYSGXFYK (SEQ ID NO:46)

2D—Preparation of the genomic DNA of the strain IM2169 was carried out according to the procedure described in Example 1D.

2E—Cloning

A first genomic DNA library (fragments of partial Sau3A DNA; pTG1265 ; E. coli 5K) was constructed as described above in Example 1. It was estimated that this library contained about 40,000 independent clones, of which about 70% had a 4-6-kb insert.

130,000 clones from this library were tested using a radioactive probe corresponding to the EcoRI-EcoRI insert of pBMT2. 42 clones were analysed, among which 2 were retained: the plasmids pTG2753 and pTG2754 which are as shown in FIG. 4 . Southern blot analyses showed that the restriction maps of the inserts of pTG2753 and pTG2754 corresponded to the restriction map of the genomic DNA.

The determination of the nuclectide sequences and the search for the regions which encode the N-terminal ends and the internal regions demonstrated that:

the 1.9-kb insert of pTG2753 contains the 3′ portion of the tbp2 gene and the 5′ portion of the tbp1 gene; and

the insert of pTG2754 contains the 3′ portion of the tbp2 gene and the 5′ and 3′ portions of the tbp1 gene, with phase disruption.

This first library did not therefore make it possible to clone the complete DNA fragments which encode Tbp1 or Tbp2.

A second genomic library was constructed as above but from XbaI-digested genomic DNA. The DNA fragments were purified after sucrose gradient fractionation. Each fraction (about 500 μl ) was tested by Southern blotting with a radioactive probe corresponding to the 3′ end of tbp1 (fragment of the insert of pTG2754). The fraction exhibiting a hybridisation reaction and containing about 6-kb fragments was cloned into pTG1265. The strain 5K of E. coli was transformed.

About 2,400 clones from this library were tested using a radioactive probe corresponding to the 0.6-kb HincII-MluI fragment obtained from pTG2754. Five clones were characterised, among which 2 were retained: that is to say pTG3720 and pTG3721, as shown in FIG. 4 , both of which contain the tbp1 and tbp2 genes.

In order to complete the nucleotide sequence which encodes Tbp1, the insert of pTG3720 was sequenced in the region where the phase disruption discovered in the insert of pTG2754 was situated. This sequencing made it possible to show that the phase disruption of the insert of pTG2754 was due to a 22 bp deletion. The complete sequence of the DNA fragment is as shown in SEQ ID NO:5

The sequencing of the insert of pTG3720 was pursued in order to establish the sequence of tbp2. The said sequence was indeed identified, but again in this case a phase disruption was observed.

Finally, the sequence of tbp2 was determined from the plasmid pTG3721. It is as shown in SEQ ID NO:7.

EXAMPLE 3

Expression of the DNA Fragment which Encodes the Tbp2 Subunit of the Strain IM2394

3A. Construction of the Expression Vector pTG3749.

The SphI site of the plasmid pARA13 ( FIG. 5 ; Cagnon et al., Prot. Eng. (1991) 4: 843) was destroyed by treatment with klenow polymerase in order to give the plasmid pTG3704. pTG3704 was linearised by NcoI cleavage, treated with Klenow polymerase in order to produce blunt ends and then digested with HindIII.

Furthermore, the oligonucleotides OTG4015 and OTG4016 were synthesised and paired.

OTG4015: 5′ AAATACCTATTGCCTACGGCAGCCGCTGGACTGTTATTACT CGCTGCCCAACCAGCGATGGCATGCTTTCCCACGCGTTTTCCCA-3′ (SEQ ID NO:47)

OTG4016:5′ AGCTTGGGAAAACGCGTGGGAAAGCATGCCATCGCTGGTTGGGCA GCGAGTAATAACAGTCCAGCGGCTGCCGTAGGCAATAGGTATTT-3′ (SEQ ID NO:48)

The double-stranded DNA fragment OTG4015/OTG4016 was inserted into pARA13 treated as described above, in order to give the plasmid pTG3717 in which the sequence which encodes the N-terminal portion of the precursor of the protein PelB of Erwinia carotovora had been reconstituted (Lei et al., J. Bact. (1987) 169: 4379); that is to say:

CCCACGCGTTTTCCCCA AGCTT . . . (SEQ ID NO:49) (The ends of pTG3704 are underlined)

From the plasmid pTG2749, a fragment including the region which encodes the N-terminal portion of Tbp2, up to the internal MluI site, as shown in FIG. 6 , was generated by PCR using the primers OTG4011 and OTG4012.

5′ AAAAAGGATCC/GCA TGC CTG GGT GGC GGC GGC AGT TTC 3′ (SEQ ID NO:50)

5′ AAAAGGATCCG AAT GGT GTA ACG CGT AGT TTT TAT 3′ (SEQ ID NO:51)

The fragment generated by PCR was digested with BamHI and then inserted into the BamHI site of the phage M13TG131 to give M13TG3724. The sequence of this fragment was checked by sequencing.

The region which encodes the N-terminal portion of Tbp2 was recovered from M13TG3724 in the form of an SphI-MluI fragment which was then inserted into pTG3717 previously digested with SphI and MluI, to give the plasmid pTG3743.

From the plasmid pBMT1, the region which encodes the C-terminal portion of Tbp2 was recovered in the form of an KluX-BanI fragment whose BanI sticky end had been made blunt by treatment with Klenow polymerase. This fragment was inserted into pTG3743 previously digested ith HindIII, treated with Klenow polymerase and finally digested with MluI. The plasmid pTG3749 was thus obtained.

3B. Production of the Thp2 Subunit

E. coli MC1061 (Casadaban & Cohen, J. Mol. Biol. (1980) 138: 179) is transformed with pTG3749 and then cultured at 37° C. in LB medium supplemented with 2 g/l of glycerol and 100 μg/ml of ampicillin. To the culture in exponential phase, is added 0.2 g/l of arabinose. The incubation is continued for a further 6 h. The expression was observed less than one hour after the addition of arabinose.

Polyacrylamide gel electrophoresis of a sample of the total cell lysate shows the presence of a protein of about 70 kD which is capable of binding peroxydaselabelled human transferrin.

EXAMPLE 4

Expression of the DNA Fragment Which Encodes the Tbp2 Subunit of the Strain IM2169

4 A. Construction of the Expression Vector pTG3779.

A synthetic fragment consisting of the oligonucleotides OTG4038 and OTG4039 previously paired, was inserted into the plasmid pTG3704 digested with NcoI and HindIII, thus generating the plasmid pTG3756.

5′ CATGGCTGCAGGRACCACGCGTGAATTCCCCGGGTCTAGA 3′ (SEQ ID NO:52)

5′ AGCTTCTAGACCCGGGGAATTCACGCGTGGTACCTGCAGC 3′ (SEQ ID NO:53) From the plasmid pTG2754, a fragment including the region which encodes the N-terminal end of the precursor of Tbp1 up to the MluI site was generated by PCR using the primers OTG4037 and OTG4014.

5′ TTTCCGGATCCGC ATG CAA CAG CAA CAT TTG TTC CGA TTA 3′ (SEQ ID NO:54)

5′ AAAAGGATCCGGGGTCGTAACGCGTCAGGTCGCGG 3′ (SEQ ID NO:55)

This PCR fragment was digested with BamHI and cloned into the BamHI site of M13TG131 in order to generate M13TG3738. The sequence of this fragment was checked.

M13TG3738 was then linearised with SphI, treated with T4 DNA polymerase so as to make the ends blunt, and then digested with MluI in order to isolate the fragment carrying the region which encodes the N-terminal end of the precursor of Tbp1.

This fragment was inserted into NcoI-digested pTG3756, treated with T4 DNA polymerase and then digested with MluI in order to generate the plasmid pTG3778. The sequence of the NcoI°/SphI° junction was checked.

The MluI-XbaI fragment of pTG3720 encoding the main part of Tbp1 (3′tbp1) was inserted into the plasmid pTG3778. The final plasmid thus obtained is the plasmid pTG3779.

4B. Production of the Tbp1 Subunit.

E. coli MC1061 was transformed with pTG3779 and then cultured at 37° C. in LB medium. To the culture in exponential phase, is added 0.2 g/l of arabinose. The incubation was continued for 4 hours.

Polyacrylamide gel electrophoresis of a sample of the total cell lysate showed the presence of a protein of about 100 kD which is recognised by the anti-receptor antibodies.

EXAMPLE 5

Expression of the DNA Fragment which Encodes the Tbp2 Subunit of the Strain IM2394 (construct with the homologous signal sequence)

5A. Construction of the Expression Vector pTG4710.

From the plasmid pTG3749, a fragment which encodes the C-terminal portion of Tbp2 (from the internal BamHI site) and containing an HindIII restriction site downstream of the translational termination codon of tbp2 was generated by PCR using the primers OTG4247 and OTG4248.

OTG4247: 5′ GGCTTTGCGCTGGATCCGCAAAATACC 3′ (SEQ ID NO:56)

OTG 4248)

5′ CCCAAAAGATCTCCAAGCTTGAAGCCTTATTCTCGATTGTTCGGCAGCC 3′ (SEQ ID NO:57)

The fragment generated by PCR was digested with HindIII and BamHI and inserted simultaneously with the SphI-BamHI fragment of pTG3749 which encodes the N-terminal part of mature Tbp2 into the vector pTG3743 digested with SphI and HindIII to give the plasmid pTG3786. The sequence of the PCR-amplified fragment was checked.

From the plasmid pTG3791, a fragment which encodes the N-terminal portion of the precursor of Tbp2 up to the internal EcoRV site was generated by PCR using the primers OTG4491 and OTG4494.

GCT ATG GTG CTG CCT GTG TTT TTG TTG AGT GCA TGC CTG GGT (SEQ ID NO:58)

The fragment generated by PCR was then digested with BspHI and EcoRV and ligated simultaneously into the NcoI-SstI fragments of pTG3704 containing the araC gene and the arab promoter, and into the EcoRV-Sst1 fragments of pTG3786 containing the 3′ portion of the tbp2 and the arab terminator. The resulting plasmid pTG4710 was checked by sequencing (sequence of the PCR-amplified fragment).

5B. Production of the Tbp2 Subunit.

E. coli Xac-I (Normanly et al., Proc. Natl. Acad. Sci. (1986) 83: 6548) is transformed with the plasmid pTG4710 and then cultured at 37° C. in M9 medium +0.5% succinate +50 μg/ml arginine +100 μg/ml ampicillin. In the exponential phase, 0.2% arabinose is added. After various induction times (1 h to 3 h), cells are collected and extracts are prepared. Western blot analysis followed by visualisation of Tbp2 using transferrin-peroxydase made it possible to show that most of Tbp2 occurs in the form of a precursor. Analysis of the extracts by SDS-PAGE followed by staining of the proteins with Coomassie blue made it possible to detect a high production of protein (evaluated at about 5 to 10% of the total proteins). Labelling experiments in vivo with titrated palmitate and glycerol made it possible to show that only the mature form is lipidated.

EXAMPLE 6

Expression of the DNA fragment which Encodes the Tbp2 Subunit of the Strain IN2394 (construct with the rlps signal sequence)

6A. Construction of the Expression Vector pTG4764.

From pTG3786 a fragment which encodes the RlpB signal peptide (Takase et al., J. Bacteriol. (1987) 169: 5692) and the beginning of the sequence which encodes mature Tbp2 up to the internal EcoRV site was generated by PCR using the. primers OTG4494 and OTG4651.

OTG4494: Cf Example 1.

CTG GCG GTG TTA ATC ACC GCC GGG TGC CTG GGT GGC (SEQ ID NO:60)

The PCR fragment was then digested with BspHI and EcoRV and inserted simultaneously with the EcoRV-HindIII fragment of the pTG3786 carrying the 3′ portion of the tbp2 gene, into the vector pTG3704 digested with NcoI and HindIII in order to generate the plasmid pTG4764. The sequence of the PCR-amplified fragment was checked. 6B. Production of the Tbp2 Subunit.

E. coli Xac-I is transformed with the plasmid pTG4764 and then cultured at 37° C. in M9 medium+0.5% succinate +50 μg/ml arginine +100 μg/ml ampicillin. In the exponential phase, 0.2% arabinose is added. After various induction times (1 h to 3 h), cells are collected and extracts are prepared. A Western blot analysis followed by visualisation with transferrin-peroxydase made it possible to detect a predominant band whose molecular weight corresponds to that of purified. mature Tbp2. The protein is detected in the extracts after SDS-PAGE and staining of the proteins with Coomassie blue (level of production evaluated at about 2 to 5% of the total proteins). Labelling experiments in vivo with tritiated palmitate and glycerol made it possible to show that the protein thus produced is lipidated. The quantity of lipidated mature Tbp2 form produced by the strain Xac-I/pTG4764 is greater than that produced by the strain Xac-I/pTG4710.

62 1808 base pairs nucleic acid single linear DNA (genomic) DNA which encodes Tbp2 subunit of transferrin receptor Neisseria meningitidis IM2394 sig_peptide 1..60 mat_peptide 61..1797 CDS 1..1797 1ATG AAC AAT CCA TTG GTA AAT CAG GCT GCT ATG GTG CTG CCT GTG TTT 48Met Asn Asn Pro Leu Val Asn Gln Ala Ala Met Val Leu Pro Val Phe-20 -15 -10 -5TTG TTG AGT GCT TGT CTG GGT GGC GGC GGC AGT TTC GAT TTG GAC AGC 96Leu Leu Ser Ala Cys Leu Gly Gly Gly Gly Ser Phe Asp Leu Asp Ser 1 5 10GTG GAA ACC GTG CAA GAT ATG CAC TCC AAA CCT AAG TAT GAG GAT GAA 144Val Glu Thr Val Gln Asp Met His Ser Lys Pro Lys Tyr Glu Asp Glu 15 20 25AAA AGC CAG CCT GAA AGC CAA CAG GAT GTA TCG GAA AAC AGC GGC GCG 192Lys Ser Gln Pro Glu Ser Gln Gln Asp Val Ser Glu Asn Ser Gly Ala 30 35 40GCT TAT GGC TTT GCA GTA AAA CTA CCT CGC CGG AAT GCA CAT TTT AAT 240Ala Tyr Gly Phe Ala Val Lys Leu Pro Arg Arg Asn Ala His Phe Asn 45 50 55 60CCT AAA TAT AAG GAA AAG CAC AAA CCA TTG GGT TCA ATG GAT TGG AAA 288Pro Lys Tyr Lys Glu Lys His Lys Pro Leu Gly Ser Met Asp Trp Lys 65 70 75AAA CTG CAA AGA GGA GAA CCA AAT AGT TTT AGT GAG AGG GAT GAA TTG 336Lys Leu Gln Arg Gly Glu Pro Asn Ser Phe Ser Glu Arg Asp Glu Leu 80 85 90GAA AAA AAA CGG GGT AGT TCT GAA CTT ATT GAA TCA AAA TGG GAA GAT 384Glu Lys Lys Arg Gly Ser Ser Glu Leu Ile Glu Ser Lys Trp Glu Asp 95 100 105GGG CAA AGT CGT GTA GTT GGT TAT ACA AAT TTC ACT TAT GTC CGT TCG 432Gly Gln Ser Arg Val Val Gly Tyr Thr Asn Phe Thr Tyr Val Arg Ser 110 115 120GGA TAT GTT TAC CTT AAT AAA AAT AAT ATT GAT ATT AAG AAT AAT ATA 480Gly Tyr Val Tyr Leu Asn Lys Asn Asn Ile Asp Ile Lys Asn Asn Ile125 130 135 140GTT CTT TTT GGA CCT GAC GGA TAT CTT TAC TAT AAA GGG AAA GAA CCT 528Val Leu Phe Gly Pro Asp Gly Tyr Leu Tyr Tyr Lys Gly Lys Glu Pro 145 150 155TCC AAG GAG CTG CCA TCG GAA AAG ATA ACT TAT AAA GGT ACT TGG GAT 576Ser Lys Glu Leu Pro Ser Glu Lys Ile Thr Tyr Lys Gly Thr Trp Asp 160 165 170TAT GTT ACT GAT GCT ATG GAA AAA CAA AGG TTT GAA GGA TTG GGT AGT 624Tyr Val Thr Asp Ala Met Glu Lys Gln Arg Phe Glu Gly Leu Gly Ser 175 180 185GCA GCA GGA GGA GAT AAA TCG GGG GCG TTG TCT GCA TTA GAA GAA GGG 672Ala Ala Gly Gly Asp Lys Ser Gly Ala Leu Ser Ala Leu Glu Glu Gly 190 195 200GTA TTG CGT AAT CAG GCA GAG GCA TCA TCC GGT CAT ACC GAT TTT GGT 720Val Leu Arg Asn Gln Ala Glu Ala Ser Ser Gly His Thr Asp Phe Gly205 210 215 220ATG ACT AGT GAG TTT GAG GTT GAT TTT TCT GAT AAA ACA ATA AAG GGC 768Met Thr Ser Glu Phe Glu Val Asp Phe Ser Asp Lys Thr Ile Lys Gly 225 230 235ACA CTT TAT CGT AAC AAC CGT ATT ACT CAA AAT AAT AGT GAA AAC AAA 816Thr Leu Tyr Arg Asn Asn Arg Ile Thr Gln Asn Asn Ser Glu Asn Lys 240 245 250CAA ATA AAA ACT ACG CGT TAC ACC ATT CAA GCA ACT CTT CAC GGC AAC 864Gln Ile Lys Thr Thr Arg Tyr Thr Ile Gln Ala Thr Leu His Gly Asn 255 260 265CGT TTC AAA GGT AAG GCG TTG GCG GCA GAT AAA GGT GCA ACA AAT GGA 912Arg Phe Lys Gly Lys Ala Leu Ala Ala Asp Lys Gly Ala Thr Asn Gly 270 275 280AGT CAT CCC TTT ATT TCC GAC TCC GAC AGT TTG GAA GGC GGA TTT TAC 960Ser His Pro Phe Ile Ser Asp Ser Asp Ser Leu Glu Gly Gly Phe Tyr285 290 295 300GGG CCG AAA GGC GAG GAA CTT GCC GGT AAA TTC TTG AGC AAC GAC AAC 1008Gly Pro Lys Gly Glu Glu Leu Ala Gly Lys Phe Leu Ser Asn Asp Asn 305 310 315AAA GTT GCA GCG GTG TTT GGT GCG AAG CAG AAA GAT AAG AAG GAT GGG 1056Lys Val Ala Ala Val Phe Gly Ala Lys Gln Lys Asp Lys Lys Asp Gly 320 325 330GAA AAC GCG GCA GGG CCT GCA ACG GAA ACC GTG ATA GAT GCA TAC CGT 1104Glu Asn Ala Ala Gly Pro Ala Thr Glu Thr Val Ile Asp Ala Tyr Arg 335 340 345ATT ACC GGC GAG GAG TTT AAG AAA GAG CAA ATA GAC AGT TTT GGA GAT 1152Ile Thr Gly Glu Glu Phe Lys Lys Glu Gln Ile Asp Ser Phe Gly Asp 350 355 360GTG AAA AAG CTG CTG GTT GAC GGA GTG GAG CTT TCA CTG CTG CCG TCT 1200Val Lys Lys Leu Leu Val Asp Gly Val Glu Leu Ser Leu Leu Pro Ser365 370 375 380GAG GGC AAT AAG GCG GCA TTT CAG CAC GAG ATT GAG CAA AAC GGC GTG 1248Glu Gly Asn Lys Ala Ala Phe Gln His Glu Ile Glu Gln Asn Gly Val 385 390 395AAG GCA ACG GTG TGT TGT TCC AAC TTG GAT TAC ATG AGT TTT GGG AAG 1296Lys Ala Thr Val Cys Cys Ser Asn Leu Asp Tyr Met Ser Phe Gly Lys 400 405 410CTG TCA AAA GAA AAT AAA GAC GAT ATG TTC CTG CAA GGT GTC CGC ACT 1344Leu Ser Lys Glu Asn Lys Asp Asp Met Phe Leu Gln Gly Val Arg Thr 415 420 425CCA GTA TCC GAT GTG GCG GCA AGG ACG GAG GCA AAC GCC AAA TAT CGC 1392Pro Val Ser Asp Val Ala Ala Arg Thr Glu Ala Asn Ala Lys Tyr Arg 430 435 440GGT ACT TGG TAC GGA TAT ATT GCC AAC GGC ACA AGC TGG AGC GGC GAA 1440Gly Thr Trp Tyr Gly Tyr Ile Ala Asn Gly Thr Ser Trp Ser Gly Glu445 450 455 460GCC TCC AAT CAG GAA GGT GGT AAT AGG GCA GAG TTT GAC GTG GAT TTT 1488Ala Ser Asn Gln Glu Gly Gly Asn Arg Ala Glu Phe Asp Val Asp Phe 465 470 475TCC ACT AAA AAA ATC AGT GGC ACA CTC ACG GCA AAA GAC CGT ACG TCT 1536Ser Thr Lys Lys Ile Ser Gly Thr Leu Thr Ala Lys Asp Arg Thr Ser 480 485 490CCT GCG TTT ACT ATT ACT GCC ATG ATT AAG GAC AAC GGT TTT TCA GGT 1584Pro Ala Phe Thr Ile Thr Ala Met Ile Lys Asp Asn Gly Phe Ser Gly 495 500 505GTG GCG AAA ACC GGT GAA AAC GGC TTT GCG CTG GAT CCG CAA AAT ACC 1632Val Ala Lys Thr Gly Glu Asn Gly Phe Ala Leu Asp Pro Gln Asn Thr 510 515 520GGA AAT TCC CAC TAT ACG CAT ATT GAA GCC ACT GTA TCC GGC GGT TTC 1680Gly Asn Ser His Tyr Thr His Ile Glu Ala Thr Val Ser Gly Gly Phe525 530 535 540TAC GGC AAA AAC GCC ATC GAG ATG GGC GGA TCG TTC TCA TTT CCG GGA 1728Tyr Gly Lys Asn Ala Ile Glu Met Gly Gly Ser Phe Ser Phe Pro Gly 545 550 555AAT GCA CCA GAG GGA AAA CAA GAA AAA GCA TCG GTG GTA TTC GGT GCG 1776Asn Ala Pro Glu Gly Lys Gln Glu Lys Ala Ser Val Val Phe Gly Ala 560 565 570AAA CGC CAA CAG CTT GTG CAA TAAGCACGGC T 1808Lys Arg Gln Gln Leu Val Gln 575 599 amino acids amino acid linear protein not provided 2Met Asn Asn Pro Leu Val Asn Gln Ala Ala Met Val Leu Pro Val Phe-20 -15 -10 -5Leu Leu Ser Ala Cys Leu Gly Gly Gly Gly Ser Phe Asp Leu Asp Ser 1 5 10Val Glu Thr Val Gln Asp Met His Ser Lys Pro Lys Tyr Glu Asp Glu 15 20 25Lys Ser Gln Pro Glu Ser Gln Gln Asp Val Ser Glu Asn Ser Gly Ala 30 35 40Ala Tyr Gly Phe Ala Val Lys Leu Pro Arg Arg Asn Ala His Phe Asn 45 50 55 60Pro Lys Tyr Lys Glu Lys His Lys Pro Leu Gly Ser Met Asp Trp Lys 65 70 75Lys Leu Gln Arg Gly Glu Pro Asn Ser Phe Ser Glu Arg Asp Glu Leu 80 85 90Glu Lys Lys Arg Gly Ser Ser Glu Leu Ile Glu Ser Lys Trp Glu Asp 95 100 105Gly Gln Ser Arg Val Val Gly Tyr Thr Asn Phe Thr Tyr Val Arg Ser 110 115 120Gly Tyr Val Tyr Leu Asn Lys Asn Asn Ile Asp Ile Lys Asn Asn Ile125 130 135 140Val Leu Phe Gly Pro Asp Gly Tyr Leu Tyr Tyr Lys Gly Lys Glu Pro 145 150 155Ser Lys Glu Leu Pro Ser Glu Lys Ile Thr Tyr Lys Gly Thr Trp Asp 160 165 170Tyr Val Thr Asp Ala Met Glu Lys Gln Arg Phe Glu Gly Leu Gly Ser 175 180 185Ala Ala Gly Gly Asp Lys Ser Gly Ala Leu Ser Ala Leu Glu Glu Gly 190 195 200Val Leu Arg Asn Gln Ala Glu Ala Ser Ser Gly His Thr Asp Phe Gly205 210 215 220Met Thr Ser Glu Phe Glu Val Asp Phe Ser Asp Lys Thr Ile Lys Gly 225 230 235Thr Leu Tyr Arg Asn Asn Arg Ile Thr Gln Asn Asn Ser Glu Asn Lys 240 245 250Gln Ile Lys Thr Thr Arg Tyr Thr Ile Gln Ala Thr Leu His Gly Asn 255 260 265Arg Phe Lys Gly Lys Ala Leu Ala Ala Asp Lys Gly Ala Thr Asn Gly 270 275 280Ser His Pro Phe Ile Ser Asp Ser Asp Ser Leu Glu Gly Gly Phe Tyr285 290 295 300Gly Pro Lys Gly Glu Glu Leu Ala Gly Lys Phe Leu Ser Asn Asp Asn 305 310 315Lys Val Ala Ala Val Phe Gly Ala Lys Gln Lys Asp Lys Lys Asp Gly 320 325 330Glu Asn Ala Ala Gly Pro Ala Thr Glu Thr Val Ile Asp Ala Tyr Arg 335 340 345Ile Thr Gly Glu Glu Phe Lys Lys Glu Gln Ile Asp Ser Phe Gly Asp 350 355 360Val Lys Lys Leu Leu Val Asp Gly Val Glu Leu Ser Leu Leu Pro Ser365 370 375 380Glu Gly Asn Lys Ala Ala Phe Gln His Glu Ile Glu Gln Asn Gly Val 385 390 395Lys Ala Thr Val Cys Cys Ser Asn Leu Asp Tyr Met Ser Phe Gly Lys 400 405 410Leu Ser Lys Glu Asn Lys Asp Asp Met Phe Leu Gln Gly Val Arg Thr 415 420 425Pro Val Ser Asp Val Ala Ala Arg Thr Glu Ala Asn Ala Lys Tyr Arg 430 435 440Gly Thr Trp Tyr Gly Tyr Ile Ala Asn Gly Thr Ser Trp Ser Gly Glu445 450 455 460Ala Ser Asn Gln Glu Gly Gly Asn Arg Ala Glu Phe Asp Val Asp Phe 465 470 475Ser Thr Lys Lys Ile Ser Gly Thr Leu Thr Ala Lys Asp Arg Thr Ser 480 485 490Pro Ala Phe Thr Ile Thr Ala Met Ile Lys Asp Asn Gly Phe Ser Gly 495 500 505Val Ala Lys Thr Gly Glu Asn Gly Phe Ala Leu Asp Pro Gln Asn Thr 510 515 520Gly Asn Ser His Tyr Thr His Ile Glu Ala Thr Val Ser Gly Gly Phe525 530 535 540Tyr Gly Lys Asn Ala Ile Glu Met Gly Gly Ser Phe Ser Phe Pro Gly 545 550 555Asn Ala Pro Glu Gly Lys Gln Glu Lys Ala Ser Val Val Phe Gly Ala 560 565 570Lys Arg Gln Gln Leu Val Gln 575 2800 base pairs nucleic acid single linear DNA (genomic) DNA encodes Tpb1 subunit of transferrin receptor Neisseria meningitidis IM2394 sig_peptide 40..111 mat_peptide 112..2763 CDS 40..2763 3CTTCCGATGC CGTCTGAAAG CGAAGATTAG GGAAACACT ATG CAA CAG CAA CAT 54 Met Gln Gln Gln His -24 -20TTG TTC CGA TTA AAT ATT TTA TGC CTG TCT TTA ATG ACC GCG CTG CCC 102Leu Phe Arg Leu Asn Ile Leu Cys Leu Ser Leu Met Thr Ala Leu Pro -15 -10 -5GTT TAT GCA GAA AAT GTG CAA GCC GAA CAA GCA CAG GAA AAA CAG TTG 150Val Tyr Ala Glu Asn Val Gln Ala Glu Gln Ala Gln Glu Lys Gln Leu 1 5 10GAT ACC ATA CAG GTA AAA GCC AAA AAA CAG AAA ACC CGC CGC GAT AAC 198Asp Thr Ile Gln Val Lys Ala Lys Lys Gln Lys Thr Arg Arg Asp Asn 15 20 25GAA GTG ACC GGG CTG GGC AAG TTG GTC AAG TCT TCC GAT ACG CTA AGT 246Glu Val Thr Gly Leu Gly Lys Leu Val Lys Ser Ser Asp Thr Leu Ser 30 35 40 45AAA GAA CAG GTT TTG AAT ATC CGA GAC CTG ACC CGT TAT GAT CCG GGT 294Lys Glu Gln Val Leu Asn Ile Arg Asp Leu Thr Arg Tyr Asp Pro Gly 50 55 60ATT GCC GTG GTC GAA CAG GGT CGG GGC GCA AGT TCC GGC TAT TCA ATA 342Ile Ala Val Val Glu Gln Gly Arg Gly Ala Ser Ser Gly Tyr Ser Ile 65 70 75CGC GGC ATG GAT AAA AAC CGC GTT TCC TTA ACG GTA GAC GGC GTT TCG 390Arg Gly Met Asp Lys Asn Arg Val Ser Leu Thr Val Asp Gly Val Ser 80 85 90CAA ATA CAG TCC TAC ACC GCG CAG GCG GCA TTG GGT GGG ACG AGG ACG 438Gln Ile Gln Ser Tyr Thr Ala Gln Ala Ala Leu Gly Gly Thr Arg Thr 95 100 105GCG GGT AGC AGC GGC GCA ATC AAT GAA ATC GAG TAT GAA AAC GTC AAG 486Ala Gly Ser Ser Gly Ala Ile Asn Glu Ile Glu Tyr Glu Asn Val Lys110 115 120 125GCC GTT GAA ATC AGC AAG GGT TCG AAT TCA TCA GAA TAC GGA AAC GGC 534Ala Val Glu Ile Ser Lys Gly Ser Asn Ser Ser Glu Tyr Gly Asn Gly 130 135 140GCA TTG GCA GGT TCG GTC GCA TTT CAA ACC AAA ACC GCA GCC GAC ATT 582Ala Leu Ala Gly Ser Val Ala Phe Gln Thr Lys Thr Ala Ala Asp Ile 145 150 155ATC GGA GAG GGA AAA CAG TGG GGC ATT CAG AGT AAA ACT GCC TAT TCG 630Ile Gly Glu Gly Lys Gln Trp Gly Ile Gln Ser Lys Thr Ala Tyr Ser 160 165 170GGA AAA GAC CAT GCC CTG ACG CAA TCC CTT GCG CTT GCC GGA CGC AGC 678Gly Lys Asp His Ala Leu Thr Gln Ser Leu Ala Leu Ala Gly Arg Ser 175 180 185GGC GGC GCG GAA GCC CTC CTT ATT TAT ACT AAA CGG CGG GGT CGG GAA 726Gly Gly Ala Glu Ala Leu Leu Ile Tyr Thr Lys Arg Arg Gly Arg Glu190 195 200 205ATC CAT GCG CAT AAA GAT GCC GGC AAG GGT GTG CAG AGC TTC AAC CGG 774Ile His Ala His Lys Asp Ala Gly Lys Gly Val Gln Ser Phe Asn Arg 210 215 220CTG GTG TTG GAC GAG GAC AAG AAG GAG GGT GGC AGT CAG TAC AGA TAT 822Leu Val Leu Asp Glu Asp Lys Lys Glu Gly Gly Ser Gln Tyr Arg Tyr 225 230 235TTC ATT GTC GAA GAA GAA TGC CAC AAT GGA TAT GCG GCC TGT AAA AAC 870Phe Ile Val Glu Glu Glu Cys His Asn Gly Tyr Ala Ala Cys Lys Asn 240 245 250AAG CTG AAA GAA GAT GCC TCG GTC AAA GAT GAG CGC AAA ACC GTC AGC 918Lys Leu Lys Glu Asp Ala Ser Val Lys Asp Glu Arg Lys Thr Val Ser 255 260 265ACG CAG GAT TAT ACC GGC TCC AAC CGC TTA CTT GCG AAC CCG CTT GAG 966Thr Gln Asp Tyr Thr Gly Ser Asn Arg Leu Leu Ala Asn Pro Leu Glu270 275 280 285TAT GGC AGC CAA TCA TGG CTG TTC CGA CCG GGT TGG CAT TTG GAC AAC 1014Tyr Gly Ser Gln Ser Trp Leu Phe Arg Pro Gly Trp His Leu Asp Asn 290 295 300CGC CAT TAT GTC GGA GCC GTT CTC GAA CGT ACG CAG CAG ACC TTT GAT 1062Arg His Tyr Val Gly Ala Val Leu Glu Arg Thr Gln Gln Thr Phe Asp 305 310 315ACA CGG GAT ATG ACT GTT CCT GCC TAT TTT ACC AGT GAA GAT TAT GTA 1110Thr Arg Asp Met Thr Val Pro Ala Tyr Phe Thr Ser Glu Asp Tyr Val 320 325 330CCC GGT TCG CTG AAA GGT CTT GGC AAA TAT TCG GGC GAT AAT AAG GCA 1158Pro Gly Ser Leu Lys Gly Leu Gly Lys Tyr Ser Gly Asp Asn Lys Ala 335 340 345GAA AGG CTG TTT GTT CAG GGA GAG GGC AGT ACA TTG CAG GGT ATC GGT 1206Glu Arg Leu Phe Val Gln Gly Glu Gly Ser Thr Leu Gln Gly Ile Gly350 355 360 365TAC GGT ACC GGC GTG TTT TAT GAT GAA CGC CAT ACT AAA AAC CGC TAC 1254Tyr Gly Thr Gly Val Phe Tyr Asp Glu Arg His Thr Lys Asn Arg Tyr 370 375 380GGG GTC GAA TAT GTT TAC CAT AAT GCT GAT AAG GAT ACC TGG GCC GAT 1302Gly Val Glu Tyr Val Tyr His Asn Ala Asp Lys Asp Thr Trp Ala Asp 385 390 395TAC GCC CGA CTT TCT TAT GAC CGG CAA GGT ATA GAT TTG GAC AAC CGT 1350Tyr Ala Arg Leu Ser Tyr Asp Arg Gln Gly Ile Asp Leu Asp Asn Arg 400 405 410TTG CAG CAG ACG CAT TGC TCT CAC GAC GGT TCG GAT AAA AAT TGC CGT 1398Leu Gln Gln Thr His Cys Ser His Asp Gly Ser Asp Lys Asn Cys Arg 415 420 425CCC GAC GGC AAT AAA CCG TAT TCT TTC TAT AAA TCC GAC CGG ATG ATT 1446Pro Asp Gly Asn Lys Pro Tyr Ser Phe Tyr Lys Ser Asp Arg Met Ile430 435 440 445TAT GAA GAA AGC CGA AAC CTG TTC CAA GCA GTA TTT AAA AAG GCA TTT 1494Tyr Glu Glu Ser Arg Asn Leu Phe Gln Ala Val Phe Lys Lys Ala Phe 450 455 460GAT ACG GCC AAA ATC CGT CAC AAT TTG AGT ATC AAT CTA GGG TAC GAC 1542Asp Thr Ala Lys Ile Arg His Asn Leu Ser Ile Asn Leu Gly Tyr Asp 465 470 475CGC TTT AAG TCG CAA TTG TCC CAC AGC GAT TAT TAT CTT CAA AAC GCA 1590Arg Phe Lys Ser Gln Leu Ser His Ser Asp Tyr Tyr Leu Gln Asn Ala 480 485 490GTT CAG GCA TAT GAT TTG ATA ACC CCG AAA AAG CCT CCG TTT CCC AAC 1638Val Gln Ala Tyr Asp Leu Ile Thr Pro Lys Lys Pro Pro Phe Pro Asn 495 500 505GGA AGC AAA GAC AAC CCG TAT AGG GTG TCT ATC GGC AAG ACC ACG GTC 1686Gly Ser Lys Asp Asn Pro Tyr Arg Val Ser Ile Gly Lys Thr Thr Val510 515 520 525AAT ACA TCG CCG ATA TGC CGT TTC GGC AAT AAC ACC TAT ACA GAC TGC 1734Asn Thr Ser Pro Ile Cys Arg Phe Gly Asn Asn Thr Tyr Thr Asp Cys 530 535 540ACA CCG AGG AAT ATC GGC GGC AAC GGT TAT TAT GCA GCC GTT CAA GAC 1782Thr Pro Arg Asn Ile Gly Gly Asn Gly Tyr Tyr Ala Ala Val Gln Asp 545 550 555AAT GTC CGT TTG GGC AGG TGG GCG GAT GTC GGA GCA GGC ATA CGT TAC 1830Asn Val Arg Leu Gly Arg Trp Ala Asp Val Gly Ala Gly Ile Arg Tyr 560 565 570GAT TAC CGC AGC ACG CAT TCG GAA GAT AAG AGT GTC TCT ACC GGC ACT 1878Asp Tyr Arg Ser Thr His Ser Glu Asp Lys Ser Val Ser Thr Gly Thr 575 580 585CAC CGC AAC CTT TCT TGG AAC GCG GGC GTA GTC CTC AAA CCT TTC ACC 1926His Arg Asn Leu Ser Trp Asn Ala Gly Val Val Leu Lys Pro Phe Thr590 595 600 605TGG ATG GAT TTG ACT TAT CGC GCT TCT ACG GGC TTC CGT CTG CCG TCG 1974Trp Met Asp Leu Thr Tyr Arg Ala Ser Thr Gly Phe Arg Leu Pro Ser 610 615 620TTT GCC GAA ATG TAT GGC TGG AGA GCC GGG GAG TCT TTG AAA ACG TTG 2022Phe Ala Glu Met Tyr Gly Trp Arg Ala Gly Glu Ser Leu Lys Thr Leu 625 630 635GAT CTG AAA CCG GAA AAA TCC TTT AAT AGA GAG GCA GGT ATT GTA TTT 2070Asp Leu Lys Pro Glu Lys Ser Phe Asn Arg Glu Ala Gly Ile Val Phe 640 645 650AAA GGG GAC TTC GGC AAT TTG GAA GCC AGC TAT TTC AAC AAT GCC TAT 2118Lys Gly Asp Phe Gly Asn Leu Glu Ala Ser Tyr Phe Asn Asn Ala Tyr 655 660 665CGC GAC CTG ATT GCA TTC GGT TAT GAA ACC CGA ACT CAA AAC GGG CAA 2166Arg Asp Leu Ile Ala Phe Gly Tyr Glu Thr Arg Thr Gln Asn Gly Gln670 675 680 685ACT TCG GCT TCT GGC GAC CCC GGA TAC CGA AAT GCC CAA AAT GCA CGG 2214Thr Ser Ala Ser Gly Asp Pro Gly Tyr Arg Asn Ala Gln Asn Ala Arg 690 695 700ATA GCC GGT ATC AAT ATT TTG GGT AAA ATC GAT TGG CAC GGC GTA TGG 2262Ile Ala Gly Ile Asn Ile Leu Gly Lys Ile Asp Trp His Gly Val Trp 705 710 715GGC GGG TTG CCG GAC GGG TTG TAT TCC ACG CTT GCC TAT AAC CGT ATC 2310Gly Gly Leu Pro Asp Gly Leu Tyr Ser Thr Leu Ala Tyr Asn Arg Ile 720 725 730AAG GTC AAA GAT GCC GAT ATA CGC GCC GAC AGG ACG TTT GTA ACT TCA 2358Lys Val Lys Asp Ala Asp Ile Arg Ala Asp Arg Thr Phe Val Thr Ser 735 740 745TAT CTC TTT GAT GCC GTC CAA CCT TCA CGA TAT GTA TTG GGT TTG GGT 2406Tyr Leu Phe Asp Ala Val Gln Pro Ser Arg Tyr Val Leu Gly Leu Gly750 755 760 765TAC GAC CAT CCT GAC GGA ATA TGG GGC ATC AAT ACG ATG TTT ACT TAT 2454Tyr Asp His Pro Asp Gly Ile Trp Gly Ile Asn Thr Met Phe Thr Tyr 770 775 780TCC AAG GCA AAA TCT GTT GAC GAA CTG CTC GGC AGC CAG GCG CTG TTG 2502Ser Lys Ala Lys Ser Val Asp Glu Leu Leu Gly Ser Gln Ala Leu Leu 785 790 795AAC GGT AAT GCC AAT GCT AAA AAA GCA GCA TCA CGG CGG ACG CGG CCT 2550Asn Gly Asn Ala Asn Ala Lys Lys Ala Ala Ser Arg Arg Thr Arg Pro 800 805 810TGG TAT GTT ACG GAT GTT TCC GGA TAT TAC AAT ATC AAG AAA CAC CTG 2598Trp Tyr Val Thr Asp Val Ser Gly Tyr Tyr Asn Ile Lys Lys His Leu 815 820 825ACC CTG CGC GCA GGT GTG TAC AAC CTC CTC AAC TAC CGC TAT GTT ACT 2646Thr Leu Arg Ala Gly Val Tyr Asn Leu Leu Asn Tyr Arg Tyr Val Thr830 835 840 845TGG GAA AAT GTG CGG CAA ACT GCC GGC GGC GCA GTC AAC CAA CAC AAA 2694Trp Glu Asn Val Arg Gln Thr Ala Gly Gly Ala Val Asn Gln His Lys 850 855 860AAT GTC GGC GTT TAC AAC CGA TAT GCC GCC CCC GGC CGA AAC TAC ACA 2742Asn Val Gly Val Tyr Asn Arg Tyr Ala Ala Pro Gly Arg Asn Tyr Thr 865 870 875TTT AGC TTG GAA ATG AAG TTT TAAACGTCCA AACGCCGCAA ATGCCGTCTG 2793Phe Ser Leu Glu Met Lys Phe 880AAAGGCT 2800 908 amino acids amino acid linear protein not provided 4Met Gln Gln Gln His Leu Phe Arg Leu Asn Ile Leu Cys Leu Ser Leu-24 -20 -15 -10Met Thr Ala Leu Pro Val Tyr Ala Glu Asn Val Gln Ala Glu Gln Ala -5 1 5Gln Glu Lys Gln Leu Asp Thr Ile Gln Val Lys Ala Lys Lys Gln Lys 10 15 20Thr Arg Arg Asp Asn Glu Val Thr Gly Leu Gly Lys Leu Val Lys Ser 25 30 35 40Ser Asp Thr Leu Ser Lys Glu Gln Val Leu Asn Ile Arg Asp Leu Thr 45 50 55Arg Tyr Asp Pro Gly Ile Ala Val Val Glu Gln Gly Arg Gly Ala Ser 60 65 70Ser Gly Tyr Ser Ile Arg Gly Met Asp Lys Asn Arg Val Ser Leu Thr 75 80 85Val Asp Gly Val Ser Gln Ile Gln Ser Tyr Thr Ala Gln Ala Ala Leu 90 95 100Gly Gly Thr Arg Thr Ala Gly Ser Ser Gly Ala Ile Asn Glu Ile Glu105 110 115 120Tyr Glu Asn Val Lys Ala Val Glu Ile Ser Lys Gly Ser Asn Ser Ser 125 130 135Glu Tyr Gly Asn Gly Ala Leu Ala Gly Ser Val Ala Phe Gln Thr Lys 140 145 150Thr Ala Ala Asp Ile Ile Gly Glu Gly Lys Gln Trp Gly Ile Gln Ser 155 160 165Lys Thr Ala Tyr Ser Gly Lys Asp His Ala Leu Thr Gln Ser Leu Ala 170 175 180Leu Ala Gly Arg Ser Gly Gly Ala Glu Ala Leu Leu Ile Tyr Thr Lys185 190 195 200Arg Arg Gly Arg Glu Ile His Ala His Lys Asp Ala Gly Lys Gly Val 205 210 215Gln Ser Phe Asn Arg Leu Val Leu Asp Glu Asp Lys Lys Glu Gly Gly 220 225 230Ser Gln Tyr Arg Tyr Phe Ile Val Glu Glu Glu Cys His Asn Gly Tyr 235 240 245Ala Ala Cys Lys Asn Lys Leu Lys Glu Asp Ala Ser Val Lys Asp Glu 250 255 260Arg Lys Thr Val Ser Thr Gln Asp Tyr Thr Gly Ser Asn Arg Leu Leu265 270 275 280Ala Asn Pro Leu Glu Tyr Gly Ser Gln Ser Trp Leu Phe Arg Pro Gly 285 290 295Trp His Leu Asp Asn Arg His Tyr Val Gly Ala Val Leu Glu Arg Thr 300 305 310Gln Gln Thr Phe Asp Thr Arg Asp Met Thr Val Pro Ala Tyr Phe Thr 315 320 325Ser Glu Asp Tyr Val Pro Gly Ser Leu Lys Gly Leu Gly Lys Tyr Ser 330 335 340Gly Asp Asn Lys Ala Glu Arg Leu Phe Val Gln Gly Glu Gly Ser Thr345 350 355 360Leu Gln Gly Ile Gly Tyr Gly Thr Gly Val Phe Tyr Asp Glu Arg His 365 370 375Thr Lys Asn Arg Tyr Gly Val Glu Tyr Val Tyr His Asn Ala Asp Lys 380 385 390Asp Thr Trp Ala Asp Tyr Ala Arg Leu Ser Tyr Asp Arg Gln Gly Ile 395 400 405Asp Leu Asp Asn Arg Leu Gln Gln Thr His Cys Ser His Asp Gly Ser 410 415 420Asp Lys Asn Cys Arg Pro Asp Gly Asn Lys Pro Tyr Ser Phe Tyr Lys425 430 435 440Ser Asp Arg Met Ile Tyr Glu Glu Ser Arg Asn Leu Phe Gln Ala Val 445 450 455Phe Lys Lys Ala Phe Asp Thr Ala Lys Ile Arg His Asn Leu Ser Ile 460 465 470Asn Leu Gly Tyr Asp Arg Phe Lys Ser Gln Leu Ser His Ser Asp Tyr 475 480 485Tyr Leu Gln Asn Ala Val Gln Ala Tyr Asp Leu Ile Thr Pro Lys Lys 490 495 500Pro Pro Phe Pro Asn Gly Ser Lys Asp Asn Pro Tyr Arg Val Ser Ile505 510 515 520Gly Lys Thr Thr Val Asn Thr Ser Pro Ile Cys Arg Phe Gly Asn Asn 525 530 535Thr Tyr Thr Asp Cys Thr Pro Arg Asn Ile Gly Gly Asn Gly Tyr Tyr 540 545 550Ala Ala Val Gln Asp Asn Val Arg Leu Gly Arg Trp Ala Asp Val Gly 555 560 565Ala Gly Ile Arg Tyr Asp Tyr Arg Ser Thr His Ser Glu Asp Lys Ser 570 575 580Val Ser Thr Gly Thr His Arg Asn Leu Ser Trp Asn Ala Gly Val Val585 590 595 600Leu Lys Pro Phe Thr Trp Met Asp Leu Thr Tyr Arg Ala Ser Thr Gly 605 610 615Phe Arg Leu Pro Ser Phe Ala Glu Met Tyr Gly Trp Arg Ala Gly Glu 620 625 630Ser Leu Lys Thr Leu Asp Leu Lys Pro Glu Lys Ser Phe Asn Arg Glu 635 640 645Ala Gly Ile Val Phe Lys Gly Asp Phe Gly Asn Leu Glu Ala Ser Tyr 650 655 660Phe Asn Asn Ala Tyr Arg Asp Leu Ile Ala Phe Gly Tyr Glu Thr Arg665 670 675 680Thr Gln Asn Gly Gln Thr Ser Ala Ser Gly Asp Pro Gly Tyr Arg Asn 685 690 695Ala Gln Asn Ala Arg Ile Ala Gly Ile Asn Ile Leu Gly Lys Ile Asp 700 705 710Trp His Gly Val Trp Gly Gly Leu Pro Asp Gly Leu Tyr Ser Thr Leu 715 720 725Ala Tyr Asn Arg Ile Lys Val Lys Asp Ala Asp Ile Arg Ala Asp Arg 730 735 740Thr Phe Val Thr Ser Tyr Leu Phe Asp Ala Val Gln Pro Ser Arg Tyr745 750 755 760Val Leu Gly Leu Gly Tyr Asp His Pro Asp Gly Ile Trp Gly Ile Asn 765 770 775Thr Met Phe Thr Tyr Ser Lys Ala Lys Ser Val Asp Glu Leu Leu Gly 780 785 790Ser Gln Ala Leu Leu Asn Gly Asn Ala Asn Ala Lys Lys Ala Ala Ser 795 800 805Arg Arg Thr Arg Pro Trp Tyr Val Thr Asp Val Ser Gly Tyr Tyr Asn 810 815 820Ile Lys Lys His Leu Thr Leu Arg Ala Gly Val Tyr Asn Leu Leu Asn825 830 835 840Tyr Arg Tyr Val Thr Trp Glu Asn Val Arg Gln Thr Ala Gly Gly Ala 845 850 855Val Asn Gln His Lys Asn Val Gly Val Tyr Asn Arg Tyr Ala Ala Pro 860 865 870Gly Arg Asn Tyr Thr Phe Ser Leu Glu Met Lys Phe 875 880 2809 base pairs nucleic acid single linear DNA (genomic) DNA which encodes Tbp1 subunit of transferrin receptor Neisseria meningitidis IM2169 sig_peptide 71..142 mat_peptide 143..2803 CDS 71..2803 5ATCAAGAATA AGGCTTCAGA CGGCATCGCT CCTTCCGATA CCGTCTGAAA GCGAAGATTA 60GGGAAACATT ATG CAA CAG CAA CAT TTG TTC CGA TTA AAT ATT TTA TGC 109 Met Gln Gln Gln His Leu Phe Arg Leu Asn Ile Leu Cys -24 -20 -15CTG TCG CTG ATG ACT GCG CTG CCT GCT TAT GCA GAA AAT GTG CAA GCC 157Leu Ser Leu Met Thr Ala Leu Pro Ala Tyr Ala Glu Asn Val Gln Ala -10 -5 1 5GGA CAA GCA CAG GAA AAA CAG TTG GAT ACC ATA CAG GTA AAA GCC AAA 205Gly Gln Ala Gln Glu Lys Gln Leu Asp Thr Ile Gln Val Lys Ala Lys 10 15 20AAA CAG AAA ACC CGC CGC GAT AAC GAA GTA ACC GGT CTG GGC AAA TTG 253Lys Gln Lys Thr Arg Arg Asp Asn Glu Val Thr Gly Leu Gly Lys Leu 25 30 35GTC AAA ACC GCC GAC ACC CTC AGC AAG GAA CAG GTA CTC GAT ATC CGC 301Val Lys Thr Ala Asp Thr Leu Ser Lys Glu Gln Val Leu Asp Ile Arg 40 45 50GAC CTG ACG CGT TAC GAC CCC GGC ATC GCC GTG GTC GAA CAG GGG CGC 349Asp Leu Thr Arg Tyr Asp Pro Gly Ile Ala Val Val Glu Gln Gly Arg 55 60 65GGC GCA AGT TCG GGC TAC TCG ATA CGC GGT ATG GAC AAA AAC CGC GTT 397Gly Ala Ser Ser Gly Tyr Ser Ile Arg Gly Met Asp Lys Asn Arg Val 70 75 80 85TCC TTG ACG GTG GAC GGC TTG GCG CAA ATA CAG TCC TAC ACC GCG CAG 445Ser Leu Thr Val Asp Gly Leu Ala Gln Ile Gln Ser Tyr Thr Ala Gln 90 95 100GCG GCA TTG GGC GGG ACG AGG ACG GCG GGC AGC AGC GGC GCA ATC AAT 493Ala Ala Leu Gly Gly Thr Arg Thr Ala Gly Ser Ser Gly Ala Ile Asn 105 110 115GAA ATC GAG TAT GAA AAC GTC AAA GCT GTC GAA ATC AGC AAA GGC TCA 541Glu Ile Glu Tyr Glu Asn Val Lys Ala Val Glu Ile Ser Lys Gly Ser 120 125 130AAC TCG GTC GAA CAA GGC AGC GGC GCA TTG GCG GGT TCG GTC GCA TTT 589Asn Ser Val Glu Gln Gly Ser Gly Ala Leu Ala Gly Ser Val Ala Phe 135 140 145CAA ACC AAA ACC GCC GAC GAT GTT ATC GGG GAA GGC AGG CAG TGG GGC 637Gln Thr Lys Thr Ala Asp Asp Val Ile Gly Glu Gly Arg Gln Trp Gly150 155 160 165ATT CAG AGT AAA ACC GCC TAT TCC GGC AAA AAC CGG GGG CTT ACC CAA 685Ile Gln Ser Lys Thr Ala Tyr Ser Gly Lys Asn Arg Gly Leu Thr Gln 170 175 180TCC ATC GCG CTG GCG GGG CGC ATC GGC GGT GCG GAG GCT TTG CTG ATC 733Ser Ile Ala Leu Ala Gly Arg Ile Gly Gly Ala Glu Ala Leu Leu Ile 185 190 195CAC ACC GGG CGG CGC GCG GGG GAA ATC CGC GCA CAC GAA GAT GCC GGA 781His Thr Gly Arg Arg Ala Gly Glu Ile Arg Ala His Glu Asp Ala Gly 200 205 210CGC GGC GTT CAG AGC TTT AAC AGG CTG GTG CCG GTT GAA GAC AGC AGC 829Arg Gly Val Gln Ser Phe Asn Arg Leu Val Pro Val Glu Asp Ser Ser 215 220 225GAA TAC GCC TAT TTC ATC GTT GAA GAT GAA TGC GAA GGC AAA AAT TAC 877Glu Tyr Ala Tyr Phe Ile Val Glu Asp Glu Cys Glu Gly Lys Asn Tyr230 235 240 245GAA ACG TGT AAA AGC AAA CCG AAA AAA GAT GTT GTC GGC AAA GAC GAA 925Glu Thr Cys Lys Ser Lys Pro Lys Lys Asp Val Val Gly Lys Asp Glu 250 255 260CGT CAA ACG GTT TCC ACC CGA GAC TAC ACG GGC CCC AAC CGC TTC CTC 973Arg Gln Thr Val Ser Thr Arg Asp Tyr Thr Gly Pro Asn Arg Phe Leu 265 270 275GCC GAT CCG CTT TCA TAC GAA AGC CGA TCG TGG CTG TTC CGC CCG GGT 1021Ala Asp Pro Leu Ser Tyr Glu Ser Arg Ser Trp Leu Phe Arg Pro Gly 280 285 290TTT CGT TTT GAA AAC AAA CGG CAC TAC ATC GGC GGC ATA CTC GAA CAC 1069Phe Arg Phe Glu Asn Lys Arg His Tyr Ile Gly Gly Ile Leu Glu His 295 300 305ACG CAA CAA ACT TTC GAC ACG CGC GAT ATG ACG GTT CCG GCA TTC CTG 1117Thr Gln Gln Thr Phe Asp Thr Arg Asp Met Thr Val Pro Ala Phe Leu310 315 320 325ACC AAG GCG GTT TTT GAT GCA AAT TCA AAA CAG GCG GGT TCT TTG CCC 1165Thr Lys Ala Val Phe Asp Ala Asn Ser Lys Gln Ala Gly Ser Leu Pro 330 335 340GGC AAC GGC AAA TAC GCG GGC AAC CAC AAA TAC GGC GGA CTG TTT ACC 1213Gly Asn Gly Lys Tyr Ala Gly Asn His Lys Tyr Gly Gly Leu Phe Thr 345 350 355AAC GGC GAA AAC GGT GCG CTG GTG GGC GCG GAA TAC GGT ACG GGC GTG 1261Asn Gly Glu Asn Gly Ala Leu Val Gly Ala Glu Tyr Gly Thr Gly Val 360 365 370TTT TAC GAC GAG ACG CAC ACC AAA AGC CGC TAC GGT TTG GAA TAT GTC 1309Phe Tyr Asp Glu Thr His Thr Lys Ser Arg Tyr Gly Leu Glu Tyr Val 375 380 385TAT ACC AAT GCC GAT AAA GAC ACT TGG GCG GAT TAT GCC CGC CTC TCT 1357Tyr Thr Asn Ala Asp Lys Asp Thr Trp Ala Asp Tyr Ala Arg Leu Ser390 395 400 405TAC GAC CGG CAG GGC ATC GGT TTG GAC AAT CAT TTT CAG CAG ACG CAC 1405Tyr Asp Arg Gln Gly Ile Gly Leu Asp Asn His Phe Gln Gln Thr His 410 415 420TGT TCT GCC GAC GGT TCG GAC AAA TAT TGC CGC CCG AGT GCC GAC AAG 1453Cys Ser Ala Asp Gly Ser Asp Lys Tyr Cys Arg Pro Ser Ala Asp Lys 425 430 435CCG TTT TCC TAT TAC AAA TCC GAC CGC GTG ATT TAC GGG GAA AGC CAC 1501Pro Phe Ser Tyr Tyr Lys Ser Asp Arg Val Ile Tyr Gly Glu Ser His 440 445 450AGG CTC TTG CAG GCG GCA TTC AAA AAA TCC TTC GAT ACC GCC AAA ATC 1549Arg Leu Leu Gln Ala Ala Phe Lys Lys Ser Phe Asp Thr Ala Lys Ile 455 460 465CGC CAC AAC CTG AGC GTG AAT CTC GGG TTT GAC CGC TTT GAC TCT AAT 1597Arg His Asn Leu Ser Val Asn Leu Gly Phe Asp Arg Phe Asp Ser Asn470 475 480 485CTC CGC CAT CAG GAT TAT TAT TAT CAA CAT GCC AAC CGC GCC TAT TCG 1645Leu Arg His Gln Asp Tyr Tyr Tyr Gln His Ala Asn Arg Ala Tyr Ser 490 495 500TCG AAA ACG CCC CCT AAA ACC GCC AAC CCC AAC GGC GAC AAG AGC AAA 1693Ser Lys Thr Pro Pro Lys Thr Ala Asn Pro Asn Gly Asp Lys Ser Lys 505 510 515CCC TAT TGG GTC AGC ATA GGC GGG GGA AAT GTG GTT ACG GGG CAA ATC 1741Pro Tyr Trp Val Ser Ile Gly Gly Gly Asn Val Val Thr Gly Gln Ile 520 525 530TGC CTC TTT GGC AAC AAT ACT TAT ACG GAC TGC ACG CCG CGC AGC ATC 1789Cys Leu Phe Gly Asn Asn Thr Tyr Thr Asp Cys Thr Pro Arg Ser Ile 535 540 545AAC GGC AAA AGC TAT TAC GCG GCA GTT CGG GAC AAT GTC CGT TTG GGC 1837Asn Gly Lys Ser Tyr Tyr Ala Ala Val Arg Asp Asn Val Arg Leu Gly550 555 560 565AGG TGG GCG GAT GTC GGC GCG GGG TTG CGC TAC GAC TAC CGC AGC ACG 1885Arg Trp Ala Asp Val Gly Ala Gly Leu Arg Tyr Asp Tyr Arg Ser Thr 570 575 580CAT TCG GAC GAC GGC AGC GTT TCC ACC GGC ACG CAC CGC ACC CTG TCC 1933His Ser Asp Asp Gly Ser Val Ser Thr Gly Thr His Arg Thr Leu Ser 585 590 595TGG AAC GCC GGC ATC GTC CTC AAA CCT GCC GAC TGG CTG GAT TTG ACT 1981Trp Asn Ala Gly Ile Val Leu Lys Pro Ala Asp Trp Leu Asp Leu Thr 600 605 610TAC CGC ACT TCA ACC GGC TTC CGC CTG CCC TCG TTT GCG GAA ATG TAC 2029Tyr Arg Thr Ser Thr Gly Phe Arg Leu Pro Ser Phe Ala Glu Met Tyr 615 620 625GGC TGG CGG TCG GGT GTT CAA AGC AAG GCG GTC AAA ATC GAT CCG GAA 2077Gly Trp Arg Ser Gly Val Gln Ser Lys Ala Val Lys Ile Asp Pro Glu630 635 640 645AAA TCG TTC AAC AAA GAA GCC GGC ATC GTG TTT AAA GGC GAT TTC GGC 2125Lys Ser Phe Asn Lys Glu Ala Gly Ile Val Phe Lys Gly Asp Phe Gly 650 655 660AAC TTG GAG GCA AGT TGG TTC AAC AAT GCC TAC CGC GAT TTG ATT GTC 2173Asn Leu Glu Ala Ser Trp Phe Asn Asn Ala Tyr Arg Asp Leu Ile Val 665 670 675CGG GGT TAT GAA GCG CAA ATT AAA AAC GGC AAA GAA GAA GCC AAA GGC 2221Arg Gly Tyr Glu Ala Gln Ile Lys Asn Gly Lys Glu Glu Ala Lys Gly 680 685 690GAC CCG GCT TAC CTC AAT GCC CAA AGC GCG CGG ATT ACC GGC ATC AAT 2269Asp Pro Ala Tyr Leu Asn Ala Gln Ser Ala Arg Ile Thr Gly Ile Asn 695 700 705ATT TTG GGC AAA ATC GAT TGG AAC GGC GTA TGG GAT AAA TTG CCC GAA 2317Ile Leu Gly Lys Ile Asp Trp Asn Gly Val Trp Asp Lys Leu Pro Glu710 715 720 725GGT TGG TAT TCT ACA TTT GCC TAT AAT CGT GTC CAT GTC CGC GAC ATC 2365Gly Trp Tyr Ser Thr Phe Ala Tyr Asn Arg Val His Val Arg Asp Ile 730 735 740AAA AAA CGC GCA GAC CGC ACC GAT ATT CAA TCA CAC CTG TTT GAT GCC 2413Lys Lys Arg Ala Asp Arg Thr Asp Ile Gln Ser His Leu Phe Asp Ala 745 750 755ATC CAA CCC TCG CGC TAT GTC GTC GGC TTG GGC TAT GAC CAA CCG GAA 2461Ile Gln Pro Ser Arg Tyr Val Val Gly Leu Gly Tyr Asp Gln Pro Glu 760 765 770GGC AAA TGG GGT GTG AAC GGT ATG CTG ACT TAT TCC AAA GCC AAG GAA 2509Gly Lys Trp Gly Val Asn Gly Met Leu Thr Tyr Ser Lys Ala Lys Glu 775 780 785ATC ACA GAG TTG TTG GGC AGC CGG GCT TTG CTC AAC GGC AAC AGC CGC 2557Ile Thr Glu Leu Leu Gly Ser Arg Ala Leu Leu Asn Gly Asn Ser Arg790 795 800 805AAT ACA AAA GCC ACC GCG CGC CGT ACC CGC CCT TGG TAT ATT GTG GAT 2605Asn Thr Lys Ala Thr Ala Arg Arg Thr Arg Pro Trp Tyr Ile Val Asp 810 815 820GTG TCC GGT TAT TAC ACG ATT AAA AAA CAC TTC ACC CTC CGT GCG GGC 2653Val Ser Gly Tyr Tyr Thr Ile Lys Lys His Phe Thr Leu Arg Ala Gly 825 830 835GTG TAC AAC CTC CTC AAC TAC CGC TAT GTT ACT TGG GAA AAT GTG CGG 2701Val Tyr Asn Leu Leu Asn Tyr Arg Tyr Val Thr Trp Glu Asn Val Arg 840 845 850CAA ACT GCC GGC GGC GCA GTC AAC CAA CAC AAA AAT GTC GGC GTT TAC 2749Gln Thr Ala Gly Gly Ala Val Asn Gln His Lys Asn Val Gly Val Tyr 855 860 865AAC CGA TAT GCC GCC CCC GGC CGA AAC TAC ACA TTT AGC TTG GAA ATG 2797Asn Arg Tyr Ala Ala Pro Gly Arg Asn Tyr Thr Phe Ser Leu Glu Met870 875 880 885AAG TTT TAAACG 2809Lys Phe 911 amino acids amino acid linear protein not provided 6Met Gln Gln Gln His Leu Phe Arg Leu Asn Ile Leu Cys Leu Ser Leu-24 -20 -15 -10Met Thr Ala Leu Pro Ala Tyr Ala Glu Asn Val Gln Ala Gly Gln Ala -5 1 5Gln Glu Lys Gln Leu Asp Thr Ile Gln Val Lys Ala Lys Lys Gln Lys 10 15 20Thr Arg Arg Asp Asn Glu Val Thr Gly Leu Gly Lys Leu Val Lys Thr 25 30 35 40Ala Asp Thr Leu Ser Lys Glu Gln Val Leu Asp Ile Arg Asp Leu Thr 45 50 55Arg Tyr Asp Pro Gly Ile Ala Val Val Glu Gln Gly Arg Gly Ala Ser 60 65 70Ser Gly Tyr Ser Ile Arg Gly Met Asp Lys Asn Arg Val Ser Leu Thr 75 80 85Val Asp Gly Leu Ala Gln Ile Gln Ser Tyr Thr Ala Gln Ala Ala Leu 90 95 100Gly Gly Thr Arg Thr Ala Gly Ser Ser Gly Ala Ile Asn Glu Ile Glu105 110 115 120Tyr Glu Asn Val Lys Ala Val Glu Ile Ser Lys Gly Ser Asn Ser Val 125 130 135Glu Gln Gly Ser Gly Ala Leu Ala Gly Ser Val Ala Phe Gln Thr Lys 140 145 150Thr Ala Asp Asp Val Ile Gly Glu Gly Arg Gln Trp Gly Ile Gln Ser 155 160 165Lys Thr Ala Tyr Ser Gly Lys Asn Arg Gly Leu Thr Gln Ser Ile Ala 170 175 180Leu Ala Gly Arg Ile Gly Gly Ala Glu Ala Leu Leu Ile His Thr Gly185 190 195 200Arg Arg Ala Gly Glu Ile Arg Ala His Glu Asp Ala Gly Arg Gly Val 205 210 215Gln Ser Phe Asn Arg Leu Val Pro Val Glu Asp Ser Ser Glu Tyr Ala 220 225 230Tyr Phe Ile Val Glu Asp Glu Cys Glu Gly Lys Asn Tyr Glu Thr Cys 235 240 245Lys Ser Lys Pro Lys Lys Asp Val Val Gly Lys Asp Glu Arg Gln Thr 250 255 260Val Ser Thr Arg Asp Tyr Thr Gly Pro Asn Arg Phe Leu Ala Asp Pro265 270 275 280Leu Ser Tyr Glu Ser Arg Ser Trp Leu Phe Arg Pro Gly Phe Arg Phe 285 290 295Glu Asn Lys Arg His Tyr Ile Gly Gly Ile Leu Glu His Thr Gln Gln 300 305 310Thr Phe Asp Thr Arg Asp Met Thr Val Pro Ala Phe Leu Thr Lys Ala 315 320 325Val Phe Asp Ala Asn Ser Lys Gln Ala Gly Ser Leu Pro Gly Asn Gly 330 335 340Lys Tyr Ala Gly Asn His Lys Tyr Gly Gly Leu Phe Thr Asn Gly Glu345 350 355 360Asn Gly Ala Leu Val Gly Ala Glu Tyr Gly Thr Gly Val Phe Tyr Asp 365 370 375Glu Thr His Thr Lys Ser Arg Tyr Gly Leu Glu Tyr Val Tyr Thr Asn 380 385 390Ala Asp Lys Asp Thr Trp Ala Asp Tyr Ala Arg Leu Ser Tyr Asp Arg 395 400 405Gln Gly Ile Gly Leu Asp Asn His Phe Gln Gln Thr His Cys Ser Ala 410 415 420Asp Gly Ser Asp Lys Tyr Cys Arg Pro Ser Ala Asp Lys Pro Phe Ser425 430 435 440Tyr Tyr Lys Ser Asp Arg Val Ile Tyr Gly Glu Ser His Arg Leu Leu 445 450 455Gln Ala Ala Phe Lys Lys Ser Phe Asp Thr Ala Lys Ile Arg His Asn 460 465 470Leu Ser Val Asn Leu Gly Phe Asp Arg Phe Asp Ser Asn Leu Arg His 475 480 485Gln Asp Tyr Tyr Tyr Gln His Ala Asn Arg Ala Tyr Ser Ser Lys Thr 490 495 500Pro Pro Lys Thr Ala Asn Pro Asn Gly Asp Lys Ser Lys Pro Tyr Trp505 510 515 520Val Ser Ile Gly Gly Gly Asn Val Val Thr Gly Gln Ile Cys Leu Phe 525 530 535Gly Asn Asn Thr Tyr Thr Asp Cys Thr Pro Arg Ser Ile Asn Gly Lys 540 545 550Ser Tyr Tyr Ala Ala Val Arg Asp Asn Val Arg Leu Gly Arg Trp Ala 555 560 565Asp Val Gly Ala Gly Leu Arg Tyr Asp Tyr Arg Ser Thr His Ser Asp 570 575 580Asp Gly Ser Val Ser Thr Gly Thr His Arg Thr Leu Ser Trp Asn Ala585 590 595 600Gly Ile Val Leu Lys Pro Ala Asp Trp Leu Asp Leu Thr Tyr Arg Thr 605 610 615Ser Thr Gly Phe Arg Leu Pro Ser Phe Ala Glu Met Tyr Gly Trp Arg 620 625 630Ser Gly Val Gln Ser Lys Ala Val Lys Ile Asp Pro Glu Lys Ser Phe 635 640 645Asn Lys Glu Ala Gly Ile Val Phe Lys Gly Asp Phe Gly Asn Leu Glu 650 655 660Ala Ser Trp Phe Asn Asn Ala Tyr Arg Asp Leu Ile Val Arg Gly Tyr665 670 675 680Glu Ala Gln Ile Lys Asn Gly Lys Glu Glu Ala Lys Gly Asp Pro Ala 685 690 695Tyr Leu Asn Ala Gln Ser Ala Arg Ile Thr Gly Ile Asn Ile Leu Gly 700 705 710Lys Ile Asp Trp Asn Gly Val Trp Asp Lys Leu Pro Glu Gly Trp Tyr 715 720 725Ser Thr Phe Ala Tyr Asn Arg Val His Val Arg Asp Ile Lys Lys Arg 730 735 740Ala Asp Arg Thr Asp Ile Gln Ser His Leu Phe Asp Ala Ile Gln Pro745 750 755 760Ser Arg Tyr Val Val Gly Leu Gly Tyr Asp Gln Pro Glu Gly Lys Trp 765 770 775Gly Val Asn Gly Met Leu Thr Tyr Ser Lys Ala Lys Glu Ile Thr Glu 780 785 790Leu Leu Gly Ser Arg Ala Leu Leu Asn Gly Asn Ser Arg Asn Thr Lys 795 800 805Ala Thr Ala Arg Arg Thr Arg Pro Trp Tyr Ile Val Asp Val Ser Gly 810 815 820Tyr Tyr Thr Ile Lys Lys His Phe Thr Leu Arg Ala Gly Val Tyr Asn825 830 835 840Leu Leu Asn Tyr Arg Tyr Val Thr Trp Glu Asn Val Arg Gln Thr Ala 845 850 855Gly Gly Ala Val Asn Gln His Lys Asn Val Gly Val Tyr Asn Arg Tyr 860 865 870Ala Ala Pro Gly Arg Asn Tyr Thr Phe Ser Leu Glu Met Lys Phe 875 880 885 2230 base pairs nucleic acid single linear DNA (genomic) DNA which encodes Tbp2 subunit of transferrin receptor Neisseria meningitidis IM2169 sig_peptide 60..119 mat_peptide 120..2192 CDS 60..2192 7ATTTGTTAAA AATAAATAAA ATAATAATCC TTATCATTCT TTAATTGAAT TGGGTTTAT 59ATG AAC AAT CCA TTG GTA AAT CAG GCT GCT ATG GTG CTG CCT GTG TTT 107Met Asn Asn Pro Leu Val Asn Gln Ala Ala Met Val Leu Pro Val Phe-20 -15 -10 -5TTG TTG AGT GCC TGT CTG GGC GGC GGC GGC AGT TTC GAT CTT GAT TCT 155Leu Leu Ser Ala Cys Leu Gly Gly Gly Gly Ser Phe Asp Leu Asp Ser 1 5 10GTC GAT ACC GAA GCC CCG CGT CCC GCG CCA AAG TAT CAA GAT GTT TCT 203Val Asp Thr Glu Ala Pro Arg Pro Ala Pro Lys Tyr Gln Asp Val Ser 15 20 25TCC GAA AAA CCG CAA GCC CAA AAA GAC CAA GGC GGA TAC GGT TTT GCG 251Ser Glu Lys Pro Gln Ala Gln Lys Asp Gln Gly Gly Tyr Gly Phe Ala 30 35 40ATG AGG TTG AAA CGG AGG AAT TGG TAT CCG GGG GCA GAA GAA AGC GAG 299Met Arg Leu Lys Arg Arg Asn Trp Tyr Pro Gly Ala Glu Glu Ser Glu 45 50 55 60GTT AAA CTG AAC GAG AGT GAT TGG GAG GCG ACG GGA TTG CCG ACA AAA 347Val Lys Leu Asn Glu Ser Asp Trp Glu Ala Thr Gly Leu Pro Thr Lys 65 70 75CCC AAG GAA CTT CCT AAA CGG CAA AAA TCG GTT ATT GAA AAA GTA GAA 395Pro Lys Glu Leu Pro Lys Arg Gln Lys Ser Val Ile Glu Lys Val Glu 80 85 90ACA GAC GGC GAC AGC GAT ATT TAT TCT TCC CCC TAT CTC ACA CCA TCA 443Thr Asp Gly Asp Ser Asp Ile Tyr Ser Ser Pro Tyr Leu Thr Pro Ser 95 100 105AAC CAT CAA AAC GGC AGC GCT GGC AAC GGT GTA AAT CAA CCT AAA AAT 491Asn His Gln Asn Gly Ser Ala Gly Asn Gly Val Asn Gln Pro Lys Asn 110 115 120CAG GCA ACA GGT CAC GAA AAT TTC CAA TAT GTT TAT TCC GGT TGG TTT 539Gln Ala Thr Gly His Glu Asn Phe Gln Tyr Val Tyr Ser Gly Trp Phe125 130 135 140TAT AAA CAT GCA GCG AGT GAA AAA GAT TTC AGT AAC AAA AAA ATT AAG 587Tyr Lys His Ala Ala Ser Glu Lys Asp Phe Ser Asn Lys Lys Ile Lys 145 150 155TCA GGC GAC GAT GGT TAT ATC TTC TAT CAC GGT GAA AAA CCT TCC CGA 635Ser Gly Asp Asp Gly Tyr Ile Phe Tyr His Gly Glu Lys Pro Ser Arg 160 165 170CAA CTT CCT GCT TCT GGA AAA GTT ATC TAC AAA GGT GTG TGG CAT TTT 683Gln Leu Pro Ala Ser Gly Lys Val Ile Tyr Lys Gly Val Trp His Phe 175 180 185GTA ACC GAT ACA AAA AAG GGT CAA GAT TTT CGT GAA ATT ATC CAG CCT 731Val Thr Asp Thr Lys Lys Gly Gln Asp Phe Arg Glu Ile Ile Gln Pro 190 195 200TCA AAA AAA CAA GGC GAC AGG TAT AGC GGA TTT TCT GGT GAT GGC AGC 779Ser Lys Lys Gln Gly Asp Arg Tyr Ser Gly Phe Ser Gly Asp Gly Ser205 210 215 220GAA GAA TAT TCC AAC AAA AAG GAA TCC ACG CTG AAA GAT GAT CAC GAG 827Glu Glu Tyr Ser Asn Lys Lys Glu Ser Thr Leu Lys Asp Asp His Glu 225 230 235GGT TAT GGT TTT ACC TCG AAT TTA GAA GTG GAT TTC GGC AAT AAG AAA 875Gly Tyr Gly Phe Thr Ser Asn Leu Glu Val Asp Phe Gly Asn Lys Lys 240 245 250TTG ACG GGT AAA TTA ATA CGC AAT AAT GCG AGC CTA AAT AAT AAT ACT 923Leu Thr Gly Lys Leu Ile Arg Asn Asn Ala Ser Leu Asn Asn Asn Thr 255 260 265AAT AAT GAC AAA CAT ACC ACC CAA TAC TAC AGC CTT GAT GCA CAA ATA 971Asn Asn Asp Lys His Thr Thr Gln Tyr Tyr Ser Leu Asp Ala Gln Ile 270 275 280ACA GGC AAC CGC TTC AAC GGC ACG GCA ACG GCA ACT GAC AAA AAA GAG 1019Thr Gly Asn Arg Phe Asn Gly Thr Ala Thr Ala Thr Asp Lys Lys Glu285 290 295 300AAT GAA ACC AAA CTA CAT CCC TTT GTT TCC GAC TCG TCT TCT TTG AGC 1067Asn Glu Thr Lys Leu His Pro Phe Val Ser Asp Ser Ser Ser Leu Ser 305 310 315GGC GGC TTT TTC GGC CCG CAG GGT GAG GAA TTG GGT TTC CGC TTT TTG 1115Gly Gly Phe Phe Gly Pro Gln Gly Glu Glu Leu Gly Phe Arg Phe Leu 320 325 330AGC GAC GAT CAA AAA GTT GCC GGT GTC GGC AGC GCG AAA ACC AAA GAC 1163Ser Asp Asp Gln Lys Val Ala Gly Val Gly Ser Ala Lys Thr Lys Asp 335 340 345AAA CTG GAA AAT GGC GCG GCG GCT TCA GGC AGC ACA GGT GCG GCA GCA 1211Lys Leu Glu Asn Gly Ala Ala Ala Ser Gly Ser Thr Gly Ala Ala Ala 350 355 360TCG GGC GGT GCG GCA GGC ACG TCG TCT GAA AAC AGT AAG CTG ACC ACG 1259Ser Gly Gly Ala Ala Gly Thr Ser Ser Glu Asn Ser Lys Leu Thr Thr365 370 375 380GTT TTG GAT GCG GTT GAA TTG ACA CTA AAC GAC AAG AAA ATC AAA AAT 1307Val Leu Asp Ala Val Glu Leu Thr Leu Asn Asp Lys Lys Ile Lys Asn 385 390 395CTC GAC AAC TTC AGC AAT GCC GCC CAA CTG GTT GTC GAC GGC ATT ATG 1355Leu Asp Asn Phe Ser Asn Ala Ala Gln Leu Val Val Asp Gly Ile Met 400 405 410ATT CCG CTC CTG CCC AAG GAT TCC GAA AGC GGG AAC ACT CAG GCA GAT 1403Ile Pro Leu Leu Pro Lys Asp Ser Glu Ser Gly Asn Thr Gln Ala Asp 415 420 425AAA GGT AAA AAC GGC GGA ACA GAA TTT ACC CGC AAA TTT GAA CAC ACG 1451Lys Gly Lys Asn Gly Gly Thr Glu Phe Thr Arg Lys Phe Glu His Thr 430 435 440CCG GAA AGT GAT AAA AAA GAC GCC CAA GCA GGT ACG CAG ACG AAT GGG 1499Pro Glu Ser Asp Lys Lys Asp Ala Gln Ala Gly Thr Gln Thr Asn Gly445 450 455 460GCG CAA ACC GCT TCA AAT ACG GCA GGT GAT ACC AAT GGC AAA ACA AAA 1547Ala Gln Thr Ala Ser Asn Thr Ala Gly Asp Thr Asn Gly Lys Thr Lys 465 470 475ACC TAT GAA GTC GAA GTC TGC TGT TCC AAC CTC AAT TAT CTG AAA TAC 1595Thr Tyr Glu Val Glu Val Cys Cys Ser Asn Leu Asn Tyr Leu Lys Tyr 480 485 490GGA ATG TTG ACG CGC AAA AAC AGC AAG TCC GCG ATG CAG GCA GGA GGA 1643Gly Met Leu Thr Arg Lys Asn Ser Lys Ser Ala Met Gln Ala Gly Gly 495 500 505AAC AGT AGT CAA GCT GAT GCT AAA ACG GAA CAA GTT GAA CAA AGT ATG 1691Asn Ser Ser Gln Ala Asp Ala Lys Thr Glu Gln Val Glu Gln Ser Met 510 515 520TTC CTC CAA GGC GAG CGT ACC GAT GAA AAA GAG ATT CCA ACC GAC CAA 1739Phe Leu Gln Gly Glu Arg Thr Asp Glu Lys Glu Ile Pro Thr Asp Gln525 530 535 540AAC GTC GTT TAT CGG GGG TCT TGG TAC GGG CAT ATT GCC AAC GGC ACA 1787Asn Val Val Tyr Arg Gly Ser Trp Tyr Gly His Ile Ala Asn Gly Thr 545 550 555AGC TGG AGC GGC AAT GCT TCT GAT AAA GAG GGC GGC AAC AGG GCG GAA 1835Ser Trp Ser Gly Asn Ala Ser Asp Lys Glu Gly Gly Asn Arg Ala Glu 560 565 570TTT ACT GTG AAT TTT GCC GAT AAA AAA ATT ACC GGC AAG TTA ACC GCT 1883Phe Thr Val Asn Phe Ala Asp Lys Lys Ile Thr Gly Lys Leu Thr Ala 575 580 585GAA AAC AGG CAG GCG CAA ACC TTT ACC ATT GAG GGA ATG ATT CAG GGC 1931Glu Asn Arg Gln Ala Gln Thr Phe Thr Ile Glu Gly Met Ile Gln Gly 590 595 600AAC GGC TTT GAA GGT ACG GCG AAA ACT GCT GAG TCA GGT TTT GAT CTC 1979Asn Gly Phe Glu Gly Thr Ala Lys Thr Ala Glu Ser Gly Phe Asp Leu605 610 615 620GAT CAA AAA AAT ACC ACC CGC ACG CCT AAG GCA TAT ATC ACA GAT GCC 2027Asp Gln Lys Asn Thr Thr Arg Thr Pro Lys Ala Tyr Ile Thr Asp Ala 625 630 635AAG GTA AAG GGC GGT TTT TAC GGG CCT AAA GCC GAA GAG TTG GGC GGA 2075Lys Val Lys Gly Gly Phe Tyr Gly Pro Lys Ala Glu Glu Leu Gly Gly 640 645 650TGG TTT GCC TAT CCG GGC GAT AAA CAA ACG GAA AAG GCA ACA GCT ACA 2123Trp Phe Ala Tyr Pro Gly Asp Lys Gln Thr Glu Lys Ala Thr Ala Thr 655 660 665TCC AGC GAT GGA AAT TCA GCA AGC AGC GCG ACC GTG GTA TTC GGT GCG 2171Ser Ser Asp Gly Asn Ser Ala Ser Ser Ala Thr Val Val Phe Gly Ala 670 675 680AAA CGC CAA CAG CCT GTG CAA TAAGCACGGT TGCCGAACAA TCAAGAATAA 2222Lys Arg Gln Gln Pro Val Gln685 690GGCTTCAG 2230 711 amino acids amino acid linear protein not provided 8Met Asn Asn Pro Leu Val Asn Gln Ala Ala Met Val Leu Pro Val Phe-20 -15 -10 -5Leu Leu Ser Ala Cys Leu Gly Gly Gly Gly Ser Phe Asp Leu Asp Ser 1 5 10Val Asp Thr Glu Ala Pro Arg Pro Ala Pro Lys Tyr Gln Asp Val Ser 15 20 25Ser Glu Lys Pro Gln Ala Gln Lys Asp Gln Gly Gly Tyr Gly Phe Ala 30 35 40Met Arg Leu Lys Arg Arg Asn Trp Tyr Pro Gly Ala Glu Glu Ser Glu 45 50 55 60Val Lys Leu Asn Glu Ser Asp Trp Glu Ala Thr Gly Leu Pro Thr Lys 65 70 75Pro Lys Glu Leu Pro Lys Arg Gln Lys Ser Val Ile Glu Lys Val Glu 80 85 90Thr Asp Gly Asp Ser Asp Ile Tyr Ser Ser Pro Tyr Leu Thr Pro Ser 95 100 105Asn His Gln Asn Gly Ser Ala Gly Asn Gly Val Asn Gln Pro Lys Asn 110 115 120Gln Ala Thr Gly His Glu Asn Phe Gln Tyr Val Tyr Ser Gly Trp Phe125 130 135 140Tyr Lys His Ala Ala Ser Glu Lys Asp Phe Ser Asn Lys Lys Ile Lys 145 150 155Ser Gly Asp Asp Gly Tyr Ile Phe Tyr His Gly Glu Lys Pro Ser Arg 160 165 170Gln Leu Pro Ala Ser Gly Lys Val Ile Tyr Lys Gly Val Trp His Phe 175 180 185Val Thr Asp Thr Lys Lys Gly Gln Asp Phe Arg Glu Ile Ile Gln Pro 190 195 200Ser Lys Lys Gln Gly Asp Arg Tyr Ser Gly Phe Ser Gly Asp Gly Ser205 210 215 220Glu Glu Tyr Ser Asn Lys Lys Glu Ser Thr Leu Lys Asp Asp His Glu 225 230 235Gly Tyr Gly Phe Thr Ser Asn Leu Glu Val Asp Phe Gly Asn Lys Lys 240 245 250Leu Thr Gly Lys Leu Ile Arg Asn Asn Ala Ser Leu Asn Asn Asn Thr 255 260 265Asn Asn Asp Lys His Thr Thr Gln Tyr Tyr Ser Leu Asp Ala Gln Ile 270 275 280Thr Gly Asn Arg Phe Asn Gly Thr Ala Thr Ala Thr Asp Lys Lys Glu285 290 295 300Asn Glu Thr Lys Leu His Pro Phe Val Ser Asp Ser Ser Ser Leu Ser 305 310 315Gly Gly Phe Phe Gly Pro Gln Gly Glu Glu Leu Gly Phe Arg Phe Leu 320 325 330Ser Asp Asp Gln Lys Val Ala Gly Val Gly Ser Ala Lys Thr Lys Asp 335 340 345Lys Leu Glu Asn Gly Ala Ala Ala Ser Gly Ser Thr Gly Ala Ala Ala 350 355 360Ser Gly Gly Ala Ala Gly Thr Ser Ser Glu Asn Ser Lys Leu Thr Thr365 370 375 380Val Leu Asp Ala Val Glu Leu Thr Leu Asn Asp Lys Lys Ile Lys Asn 385 390 395Leu Asp Asn Phe Ser Asn Ala Ala Gln Leu Val Val Asp Gly Ile Met 400 405 410Ile Pro Leu Leu Pro Lys Asp Ser Glu Ser Gly Asn Thr Gln Ala Asp 415 420 425Lys Gly Lys Asn Gly Gly Thr Glu Phe Thr Arg Lys Phe Glu His Thr 430 435 440Pro Glu Ser Asp Lys Lys Asp Ala Gln Ala Gly Thr Gln Thr Asn Gly445 450 455 460Ala Gln Thr Ala Ser Asn Thr Ala Gly Asp Thr Asn Gly Lys Thr Lys 465 470 475Thr Tyr Glu Val Glu Val Cys Cys Ser Asn Leu Asn Tyr Leu Lys Tyr 480 485 490Gly Met Leu Thr Arg Lys Asn Ser Lys Ser Ala Met Gln Ala Gly Gly 495 500 505Asn Ser Ser Gln Ala Asp Ala Lys Thr Glu Gln Val Glu Gln Ser Met 510 515 520Phe Leu Gln Gly Glu Arg Thr Asp Glu Lys Glu Ile Pro Thr Asp Gln525 530 535 540Asn Val Val Tyr Arg Gly Ser Trp Tyr Gly His Ile Ala Asn Gly Thr 545 550 555Ser Trp Ser Gly Asn Ala Ser Asp Lys Glu Gly Gly Asn Arg Ala Glu 560 565 570Phe Thr Val Asn Phe Ala Asp Lys Lys Ile Thr Gly Lys Leu Thr Ala 575 580 585Glu Asn Arg Gln Ala Gln Thr Phe Thr Ile Glu Gly Met Ile Gln Gly 590 595 600Asn Gly Phe Glu Gly Thr Ala Lys Thr Ala Glu Ser Gly Phe Asp Leu605 610 615 620Asp Gln Lys Asn Thr Thr Arg Thr Pro Lys Ala Tyr Ile Thr Asp Ala 625 630 635Lys Val Lys Gly Gly Phe Tyr Gly Pro Lys Ala Glu Glu Leu Gly Gly 640 645 650Trp Phe Ala Tyr Pro Gly Asp Lys Gln Thr Glu Lys Ala Thr Ala Thr 655 660 665Ser Ser Asp Gly Asn Ser Ala Ser Ser Ala Thr Val Val Phe Gly Ala 670 675 680Lys Arg Gln Gln Pro Val Gln685 690 51 base pairs nucleic acid single linear DNA (genomic) not provided CDS 1..51 sig_peptide 1..51 9ATG AGG AAA AGA TTT TTT GTG GGA ATA TTC GCG ATA AAC CTC CTT GTT 48Met Arg Lys Arg Phe Phe Val Gly Ile Phe Ala Ile Asn Leu Leu Val 1 5 10 15GGA 51Gly 17 amino acids amino acid linear protein not provided 10Met Arg Lys Arg Phe Phe Val Gly Ile Phe Ala Ile Asn Leu Leu Val 1 5 10 15Gly 57 base pairs nucleic acid single linear DNA (genomic) not provided CDS 1..57 sig_peptide 1..57 11ATG AAA AAA ATA ACA GGG ATT ATT TTA TTG CTT CTT GCA GTC ATT ATT 48Met Lys Lys Ile Thr Gly Ile Ile Leu Leu Leu Leu Ala Val Ile Ile 1 5 10 15CTG TCT GCA 57Leu Ser Ala 19 amino acids amino acid linear protein not provided 12Met Lys Lys Ile Thr Gly Ile Ile Leu Leu Leu Leu Ala Val Ile Ile 1 5 10 15Leu Ser Ala 60 base pairs nucleic acid single linear DNA (genomic) not provided CDS 1..60 sig_peptide 1..60 13ATG AAA GCT ACT AAA CTG GTA CTG GGC GCG GTA ATC CTG GGT TCT ACT 48Met Lys Ala Thr Lys Leu Val Leu Gly Ala Val Ile Leu Gly Ser Thr 1 5 10 15CTG CTG GCA GGT 60Leu Leu Ala Gly 20 20 amino acids amino acid linear protein not provided 14Met Lys Ala Thr Lys Leu Val Leu Gly Ala Val Ile Leu Gly Ser Thr 1 5 10 15Leu Leu Ala Gly 20 69 base pairs nucleic acid single linear DNA (genomic) not provided CDS 1..69 sig_peptide 1..69 15ATG AAA CTG ACA ACA CAT CAT CTA CGG ACA GGG GCC GCA TTA TTG GTG 48Met Lys Leu Thr Thr His His Leu Arg Thr Gly Ala Ala Leu Leu Val 1 5 10 15GCC GGA ATT CTG CTG GCA GGT 69Ala Gly Ile Leu Leu Ala Gly 20 23 amino acids amino acid linear protein not provided 16Met Lys Leu Thr Thr His His Leu Arg Thr Gly Ala Ala Leu Leu Val 1 5 10 15Ala Gly Ile Leu Leu Ala Gly 20 69 base pairs nucleic acid single linear DNA (genomic) not provided CDS 1..69 sig_peptide 1..69 17ATG TTT GTA ACG AGC AAA AAA ATG ACC GCG GCT GTT CTG GCA ATT ACT 48Met Phe Val Thr Ser Lys Lys Met Thr Ala Ala Val Leu Ala Ile Thr 1 5 10 15TTG GCA ATG TCT CTG AGT GCA 69Leu Ala Met Ser Leu Ser Ala 20 23 amino acids amino acid linear protein not provided 18Met Phe Val Thr Ser Lys Lys Met Thr Ala Ala Val Leu Ala Ile Thr 1 5 10 15Leu Ala Met Ser Leu Ser Ala 20 63 base pairs nucleic acid single linear DNA (genomic) not provided CDS 1..63 sig_peptide 1..63 19ATG CAA CTG AAC AAA GTG CTG AAA GGG CTG ATG ATT GCT CTG CCT GTT 48Met Gln Leu Asn Lys Val Leu Lys Gly Leu Met Ile Ala Leu Pro Val 1 5 10 15ATG GCA ATT GCG GCA 63Met Ala Ile Ala Ala 20 21 amino acids amino acid linear protein not provided 20Met Gln Leu Asn Lys Val Leu Lys Gly Leu Met Ile Ala Leu Pro Val 1 5 10 15Met Ala Ile Ala Ala 20 54 base pairs nucleic acid single linear DNA (genomic) not provided CDS 1..54 sig_peptide 1..54 21ATG AGA TAC CTG GCA ACA TTG TTG TTA TCT CTG GCG GTG TTA ATC ACC 48Met Arg Tyr Leu Ala Thr Leu Leu Leu Ser Leu Ala Val Leu Ile Thr 1 5 10 15GCC GGG 54Ala Gly 18 amino acids amino acid linear protein not provided 22Met Arg Tyr Leu Ala Thr Leu Leu Leu Ser Leu Ala Val Leu Ile Thr 1 5 10 15Ala Gly 66 base pairs nucleic acid single linear DNA (genomic) not provided CDS 1..66 sig_peptide 1..66 23ATG AAA CAT AAC GTT AAG CTG ATG GCA ATG ACT GCC GTT TTA TCC TCT 48Met Lys His Asn Val Lys Leu Met Ala Met Thr Ala Val Leu Ser Ser 1 5 10 15GTC CTC GTG CTC TCC GGG 66Val Leu Val Leu Ser Gly 20 22 amino acids amino acid linear protein not provided 24Met Lys His Asn Val Lys Leu Met Ala Met Thr Ala Val Leu Ser Ser 1 5 10 15Val Leu Val Leu Ser Gly 20 18 amino acids amino acid single linear DNA (genomic) not provided 25Glu Xaa Val Gln Ala Glu Gln Ala Gln Glu Lys Gln Leu Asp Thr Ile1 5 10 15Gln Val 20 amino acids amino acid single linear DNA (genomic) not provided 26Xaa Leu Xaa Xaa Xaa Xaa Ser Phe Asp Leu Asp Ser Val Glu Xaa Val1 5 10 15Gln Xaa Met Xaa 20 15 amino acids amino acid single linear DNA (genomic) not provided 27Asn Asn Ile Val Leu Phe Gly Pro Asp Gly Tyr Leu Tyr Tyr Lys1 5 10 15 5 amino acids amino acid single linear DNA (genomic) not provided 28Tyr Thr Ile Gln Ala1 5 18 amino acids amino acid single linear DNA (genomic) not provided 29Asp Gly Glu Asn Ala Ala Gly Pro Ala Thr Glu Xaa Val Ile Asp Ala1 5 10 15Tyr Arg 10 amino acids amino acid single linear DNA (genomic) not provided 30Xaa Gln Ile Asp Ser Phe Gly Asp Val Lys1 5 10 7 amino acids amino acid single linear DNA (genomic) not provided 31Ala Ala Phe Xaa Xaa Xaa Ile1 5 12 amino acids amino acid single linear DNA (genomic) not provided 32Xaa Asn Xaa Xaa Xaa Met Phe Leu Gln Gly Val Arg1 5 10 9 amino acids amino acid single linear DNA (genomic) not provided 33Thr Pro Val Ser Asp Val Ala Ala Arg1 5 6 amino acids amino acid single linear DNA (genomic) not provided 34Xaa Ser Pro Ala Phe Thr1 5 19 amino acids amino acid single linear DNA (genomic) not provided 35Asn Ala Ile Glu Met Gly Gly Ser Phe Xaa Phe Pro Gly Asn Ala Pro1 5 10 15Glu Gly Lys 13 amino acids amino acid single linear DNA (genomic) not provided 36Xaa Gln Pro Glu Ser Gln Gln Asp Val Ser Glu Asn Xaa1 5 10 19 amino acids amino acid single linear DNA (genomic) not provided 37Glu Asn Val Gln Ala Gly Gln Ala Gln Glu Lys Gln Leu Xaa Xaa Ile1 5 10 15Gln Val Xaa 15 amino acids amino acid single linear DNA (genomic) not provided Protein /note= “Amino acid 4 is E or W.” 38Xaa Leu Ser Xaa Asn Ala Gly Xaa Val Leu Xaa Pro Ala Asp Xaa1 5 10 15 8 amino acids amino acid single linear DNA (genomic) not provided 39Gln Leu Asp Thr Ile Gln Val Lys1 5 17 amino acids amino acid single linear DNA (genomic) not provided 40Thr Ala Gly Ser Ser Gly Ala Ile Asn Glu Ile Glu Tyr Glu Asn Xaa1 5 10 15Xaa 14 amino acids amino acid single linear DNA (genomic) not provided 41Tyr Val Thr Trp Glu Asn Val Asp Xaa Xaa Xaa Xaa Xaa Xaa1 5 10 13 amino acids amino acid single linear DNA (genomic) not provided 42Ser Leu Val Xaa Ala Xaa Ser Phe Asp Leu Xaa Ser Val1 5 10 9 amino acids amino acid single linear DNA (genomic) not provided 43Xaa Xaa Asp Asn Leu Ser Asn Ala Xaa1 5 15 amino acids amino acid single linear DNA (genomic) not provided 44Xaa Gly Asp Asp Gly Tyr Ile Phe Tyr Xaa Gly Glu Lys Pro Xaa1 5 10 15 10 amino acids amino acid single linear DNA (genomic) not provided 45Xaa Gln Gly Xaa Tyr Gly Phe Ala Met Xaa1 5 10 19 amino acids amino acid single linear DNA (genomic) not provided 46Xaa Gln Ala Thr Gly His Glu Asn Phe Gln Tyr Val Tyr Ser Gly Xaa1 5 10 15Phe Tyr Lys 85 base pairs nucleic acid single linear DNA (genomic) not provided 47AAATACCTAT TGCCTACGGC AGCCGCTGGA CTGTTATTAC TCGCTGCCCA ACCAGCGATG 60GCATGCTTTC CCACGCGTTT TCCCA 85 89 base pairs nucleic acid single linear DNA (genomic) not provided 48AGCTTGGGAA AACGCGTGGG AAAGCATGCC ATCGCTGGTT GGGCAGCGAG TAATAACAGT 60CCAGCGGCTG CCGTAGGCAA TAGGTATTT 89 93 base pairs nucleic acid single linear DNA (genomic) not provided CDS 1..66 49ATG AAA TAC CTA TTG CCT ACG GCA GCC GCT GGA CTG TTA TTA CTC GCT 48Met Lys Tyr Leu Leu Pro Thr Ala Ala Ala Gly Leu Leu Leu Leu Ala 1 5 10 15GCC CAA CCA GCG ATG GCA TGCTTTCCCA CGCGTTTTCC CAAGCTT 93Ala Gln Pro Ala Met Ala 20 38 base pairs nucleic acid single linear DNA (genomic) not provided 50AAAAAGGATC CGCATGCCTG GGTGGCGGCG GCAGTTTC 38 35 base pairs nucleic acid single linear DNA (genomic) not provided 51AAAAGGATCC GAATGGTGTA ACGCGTAGTT TTTAT 35 40 base pairs nucleic acid single linear DNA (genomic) not provided 52CATGGCTGCA GGRACCACGC GTGAATTCCC CGGGTCTAGA 40 40 base pairs nucleic acid single linear DNA (genomic) not provided 53AGCTTCTAGA CCCGGGGAAT TCACGCGTGG TACCTGCAGC 40 41 base pairs nucleic acid single linear DNA (genomic) not provided CDS 15..26 54TTTCCCGGAT CCGC ATG CAA CAG CAA CATTTGTTCC GATTA 41 Met Gln Gln Gln 1 35 base pairs nucleic acid single linear DNA (genomic) not provided 55AAAAGGATCC GGGGTCGTAA CGCGTCAGGT CGCGG 35 27 base pairs nucleic acid single linear DNA (genomic) not provided 56GGCTTTGCGC TGGATCCGCA AAATACC 27 49 base pairs nucleic acid single linear DNA (genomic) not provided 57CCCAAAAGAT CTCCAAGCTT GAAGCCTTAT TCTCGATTGT TCGGCAGCC 49 83 base pairs nucleic acid single linear DNA (genomic) not provided CDS 15..83 58TTTTTTGGAT CCTC ATG AAC AAT CCA TTG GTA AAT CAG GCT GCT ATG GTG 50 Met Asn Asn Pro Leu Val Asn Gln Ala Ala Met Val 1 5 10CTG CCT GTG TTT TTG TTG AGT GCA TGC CTG GGT 83Leu Pro Val Phe Leu Leu Ser Ala Cys Leu Gly 15 20 47 base pairs nucleic acid single linear DNA (genomic) not provided 59TTTTTTGGAT CCGATATCCG TCAGGTCCAA AAAGAACTAT ATTATTC 47 74 base pairs nucleic acid single linear DNA (genomic) not provided CDS 9..71 60TTTTTTTC ATG AGA TAC CTG GCA ACA TTG TTG TTA TCT CTG GCG GTG TTA 50 Met Arg Tyr Leu Ala Thr Leu Leu Leu Ser Leu Ala Val Leu 1 5 10ATC ACC GCC GGG TGC CTG GGT GGC 74Ile Thr Ala Gly Cys Leu Gly 15 20 578 amino acids amino acid single linear DNA (genomic) not provided 61Cys Leu Gly Gly Gly Gly Ser Phe Asp Leu Asp Ser Val Glu Thr Val1 5 10 15Gln Asp Met His Ser Lys Pro Lys Tyr Glu Asp Glu Lys Ser Gln Pro 20 25 30Glu Ser Gln Gln Asp Val Ser Glu Asn Ser Gly Ala Ala Tyr Gly Phe 35 40 45Ala Val Lys Leu Pro Arg Arg Asn Ala His Phe Asn Pro Lys Tyr Lys 50 55 60Glu Lys His Lys Pro Leu Gly Ser Met Asp Trp Lys Lys Leu Gln Arg65 70 75 80Gly Glu Pro Asn Ser Phe Ser Glu Arg Asp Glu Leu Glu Lys Lys Arg 85 90 95Gly Ser Ser Glu Leu Ile Glu Ser Lys Trp Glu Asp Gly Gln Ser Arg 100 105 110Val Val Gly Tyr Thr Asn Phe Thr Tyr Val Arg Ser Gly Tyr Val Tyr 115 120 125Leu Asn Lys Asn Asn Ile Asp Ile Lys Asn Asn Ile Val Leu Phe Gly 130 135 140Pro Asp Gly Tyr Leu Tyr Tyr Lys Gly Lys Glu Pro Ser Lys Glu Leu145 150 155 160Pro Ser Glu Lys Ile Thr Tyr Lys Gly Thr Trp Asp Tyr Val Thr Asp 165 170 175Ala Met Glu Lys Gln Arg Phe Glu Gly Gly Ser Ala Ala Gly Gly Asp 180 185 190Lys Ser Gly Ala Leu Ser Ala Leu Glu Glu Gly Val Leu Arg Asn Gln 195 200 205Ala Glu Ala Ser Ser Gly His Thr Asp Phe Gly Met Thr Ser Glu Phe 210 215 220Glu Val Asp Phe Ser Asp Lys Thr Ile Lys Gly Thr Leu Tyr Arg Asn225 230 235 240Asn Arg Ile Thr Gln Asn Asn Ser Glu Asn Lys Gln Ile Lys Thr Thr 245 250 255Arg Tyr Thr Ile Gln Ala Thr Leu His Gly Asn Arg Phe Lys Gly Lys 260 265 270Ala Leu Ala Ala Asp Lys Gly Ala Thr Asn Gly Ser His Pro Phe Ile 275 280 285Ser Asp Ser Asp Ser Leu Glu Gly Gly Phe Tyr Gly Pro Lys Gly Glu 290 295 300Glu Leu Ala Gly Lys Phe Leu Ser Asn Asp Asn Lys Val Ala Ala Val305 310 315 320Phe Gly Ala Lys Gln Lys Asp Lys Lys Asp Gly Glu Asn Ala Ala Gly 325 330 335Pro Ala Thr Glu Thr Val Ile Asp Ala Tyr Arg Ile Thr Gly Glu Glu 340 345 350Phe Lys Lys Glu Gln Ile Asp Ser Phe Gly Asp Val Lys Lys Leu Leu 355 360 365Val Asp Gly Val Glu Leu Ser Leu Leu Pro Ser Glu Gly Asn Lys Ala 370 375 380Ala Phe Gln His Glu Ile Glu Gln Asn Gly Val Lys Ala Thr Val Cys385 390 395 400Cys Ser Asn Leu Asp Tyr Met Ser Phe Gly Lys Leu Ser Lys Glu Asn 405 410 415Lys Asp Asp Met Phe Leu Gln Gly Val Arg Thr Pro Val Ser Asp Val 420 425 430Ala Ala Arg Thr Glu Ala Asn Ala Lys Tyr Arg Gly Thr Trp Tyr Gly 435 440 445Tyr Ile Ala Asn Gly Thr Ser Trp Ser Gly Glu Ala Ser Asn Gln Glu 450 455 460Gly Gly Asn Arg Ala Glu Phe Asp Val Asp Phe Ser Thr Lys Lys Ile465 470 475 480Ser Gly Thr Leu Thr Ala Lys Asp Arg Thr Ser Pro Ala Phe Thr Ile 485 490 495Thr Ala Met Ile Lys Asp Asn Gly Phe Ser Gly Val Ala Lys Thr Gly 500 505 510Glu Asn Gly Phe Ala Leu Asp Pro Gln Asn Thr Gly Asn Ser His Tyr 515 520 525Thr His Ile Glu Ala Thr Val Ser Gly Gly Phe Tyr Gly Lys Asn Ala 530 535 540Ile Glu Met Gly Gly Ser Phe Ser Phe Pro Gly Asn Ala Pro Glu Gly545 550 555 560Lys Gln Glu Lys Ala Ser Val Val Phe Gly Ala Lys Arg Gln Gln Leu 565 570 575Val Gln 692 amino acids amino acid single linear DNA (genomic) not provided 62Cys Leu Gly Gly Gly Gly Ser Phe Asp Leu Asp Ser Val Asp Thr Glu1 5 10 15Ala Arg Pro Arg Pro Ala Pro Lys Tyr Gln Asp Val Ser Ser Glu Lys 20 25 30Pro Gln Ala Gln Lys Asp Gln Gly Gly Tyr Gly Phe Ala Met Arg Leu 35 40 45Lys Arg Arg Asn Trp Tyr Pro Gly Ala Glu Glu Ser Glu Val Lys Leu 50 55 60Asn Glu Ser Asp Trp Glu Ala Thr Gly Leu Pro Thr Lys Pro Lys Glu65 70 75 80Leu Pro Lys Arg Gln Lys Ser Val Ile Glu Lys Val Glu Thr Asp Gly 85 90 95Asp Ser Asp Ile Tyr Ser Ser Pro Tyr Leu Thr Pro Ser Asn His Gln 100 105 110Asn Gly Ser Ala Gly Asn Gly Val Asn Gln Pro Lys Asn Gln Ala Thr 115 120 125Gly His Glu Asn Phe Gln Tyr Val Tyr Ser Gly Trp Phe Tyr Lys His 130 135 140Ala Ala Ser Glu Lys Asp Phe Ser Asn Lys Lys Ile Lys Ser Gly Asp145 150 155 160Asp Gly Tyr Ile Phe Tyr His Gly Glu Lys Pro Ser Arg Gln Leu Pro 165 170 175Ala Ser Gly Lys Val Ile Tyr Lys Gly Val Trp His Phe Val Thr Asp 180 185 190Thr Lys Lys Gly Gln Asp Phe Arg Glu Ile Ile Gln Pro Ser Lys Lys 195 200 205Gln Gly Asp Arg Tyr Ser Gly Phe Ser Gly Asp Gly Ser Glu Glu Tyr 210 215 220Ser Asn Lys Asn Glu Ser Thr Leu Lys Asp Asp His Glu Gly Tyr Gly225 230 235 240Phe Thr Ser Asn Leu Glu Val Asp Phe Gly Asn Lys Lys Leu Thr Gly 245 250 255Lys Leu Ile Arg Asn Asn Ala Ser Leu Asn Asn Asn Thr Asn Asn Asp 260 265 270Lys His Thr Thr Gln Tyr Tyr Ser Leu Asp Ala Gln Ile Thr Gly Asn 275 280 285Arg Phe Asn Gly Thr Ala Thr Ala Thr Asp Lys Lys Glu Asn Glu Thr 290 295 300Lys Leu His Pro Phe Val Ser Asp Ser Ser Ser Leu Ser Gly Gly Phe305 310 315 320Phe Gly Pro Gln Gly Glu Glu Leu Gly Phe Arg Phe Leu Ser Asp Asp 325 330 335Gln Lys Val Ala Val Val Gly Ser Ala Lys Thr Lys Asp Lys Leu Glu 340 345 350Asn Gly Ala Ala Ala Ser Gly Ser Thr Gly Ala Ala Ala Ser Gly Gly 355 360 365Ala Ala Gly Thr Ser Ser Glu Asn Ser Lys Leu Thr Thr Val Leu Asp 370 375 380Ala Val Glu Leu Thr Leu Asn Asp Lys Lys Ile Lys Asn Leu Asp Asn385 390 395 400Phe Ser Asn Ala Ala Gln Leu Val Val Asp Gly Ile Met Ile Pro Leu 405 410 415Leu Pro Lys Asp Ser Glu Ser Gly Asn Thr Gln Ala Asp Lys Gly Lys 420 425 430Asn Gly Gly Thr Glu Phe Thr Arg Lys Phe Glu His Thr Pro Glu Ser 435 440 445Asp Lys Lys Asp Ala Gln Ala Gly Thr Gln Thr Asn Gly Ala Gln Thr 450 455 460Ala Ser Asn Thr Ala Gly Asp Thr Asn Gly Lys Thr Lys Thr Tyr Glu465 470 475 480Val Glu Val Cys Cys Ser Asn Leu Asn Tyr Leu Lys Tyr Gly Met Leu 485 490 495Thr Arg Lys Asn Ser Lys Ser Ala Met Gln Ala Gly Gly Asn Ser Ser 500 505 510Gln Ala Asp Ala Lys Thr Glu Gln Val Glu Gln Ser Met Phe Leu Gln 515 520 525Gly Glu Arg Thr Asp Glu Lys Glu Ile Pro Thr Asp Gln Asn Val Val 530 535 540Tyr Arg Gly Ser Trp Tyr Gly His Ile Ala Asn Gly Thr Ser Trp Ser545 550 555 560Gly Asn Ala Ser Asp Lys Glu Gly Gly Asn Arg Ala Glu Phe Thr Val 565 570 575Asn Phe Ala Asp Lys Lys Ile Thr Gly Lys Leu Thr Ala Glu Asn Arg 580 585 590Gln Ala Gln Thr Phe Thr Ile Glu Gly Met Ile Gln Gly Asn Gly Phe 595 600 605Glu Gly Thr Ala Lys Thr Ala Glu Ser Gly Phe Asp Leu Asp Gln Lys 610 615 620Asn Thr Thr Arg Thr Pro Lys Ala Tyr Ile Thr Asp Ala Lys Val Lys625 630 635 640Gly Gly Phe Tyr Gly Pro Lys Ala Glu Glu Leu Gly Gly Trp Phe Ala 645 650 655Tyr Pro Gly Asp Lys Gln Thr Glu Lys Ala Thr Ala Thr Ser Ser Asp 660 665 670Gly Asn Ser Ala Ser Ser Ala Thr Val Val Phe Gly Ala Lys Arg Gln 675 680 685Gln Pro Val Gln 690

Claims

1. A composition of matter comprising a recombinant protein and a carrier therefor, wherein said protein comprises an amino acid sequence selected from the group consisting of:the sequence of the Tbp2 subunit of N. meningitidis strain IM2394 as shown in SEQ ID NO:2, starting with the cysteine residue in position 1 and ending with the glutamine residue in position 579; and the sequence of the Tbp2 subunit of N. meningitidis strain IM2169 as shown in SEQ ID NO:8, starting with the cysteine residue in position 1 and ending wiht the glutamine residue in position 691; further wherein said protein is recognized by an antiserum against a transferrin receptor comprising the Tbp1 and Tbp2 subunits of the naturally-occurring transferrin receptor of the strain IM2394 or IM2169 of N. meningitidis, wherein said protein is obtained by culturing a host cell transformed by an expression cassette comprising a DNA molecule encoding said protein and placecd under control of appropriate elements for expression in E. coli, under conditions that allow expression of said protein, and recovering said protein from the culture.

2. The composition of claim 1, wherein the DNA molecule is placed under the control of elements comprising the araB promoter of S. typhimurium.

3. The composition of claim 1, wherein the expression cassette further comprises a DNA sequence which encodes the signal peptide R1pB.

4. A composition of matter comprising a recombinant protein and a carrier therefor, wherein the amino acid sequence of said protein consists of SEQ ID NO:8, starting with the cysteine residue in position 1 and ending with the qlutamine residue in position 691; and further wherein said protein is recognized by an antiserum against a transferrin receptor comprising the Tbp1 and Tbp2 subunits of the naturally-occurring transferrin receptor of N. meningitidis strain IM2169.