Spo-rel from streptococcus pneumoniae

Abstract

The invention provides spo/rel polypeptides and DNA (RNA) encoding spo/rel polypeptides and methods for producing such polypeptides by recombinant techniques. Also provided are methods for utilizing spo/rel polypeptides to screen for antibacterial compounds.

Description

FIELD OF THE INVENTION

This invention relates to newly identified polynucleotides and polypeptides, and their production and uses, as well as their variants, agonists and antagonists, and their uses. In particular, in these and in other regards, the invention relates to novel polynucleotides and polypeptides of the spoT/relA family, hereinafter referred to as “spo/rel”.

BACKGROUND OF THE INVENTION

The Streptococci make up a medically important genera of microbes known to cause several types of disease in humans, including, for example, otitis media, conjunctivitis, pneumonia, bacteremia, meningitis, sinusitis, pleural empyema and endocarditis, and most particularly meningitis, such as for example infection of cerebrospinal fluid. Since its isolation more than 100 years ago, Streptococcus pneumoniae has been one of the more intensively studied microbes. For example, much of our early understanding that DNA is, in fact, the genetic material was predicated on the work of Griffith and of Avery, Macleod and McCarty using this microbe. Despite the vast amount of research with S. pneumoniae, many questions concerning the virulence of this microbe remain. It is particularly preferred to employ Streptococcal genes and gene products as targets for the development of antibiotics.

The frequency of Streptococcus pneumoniae infections has risen dramatically in the past 20 years. This has been attributed to the emergence of multiply antibiotic resistant strains and an increasing population of people with weakened immune systems. It is no longer uncommon to isolate Streptococcus pneumoniae strains which are resistant to some or all of the standard antibiotics. This has created a demand for both new anti-microbial agents and diagnostic tests for this organism.

In E. coli relA and spoT proteins are involved in the stringent response to nutrient limitation and regulate the accumulation of (p)ppGpp which is involved in the regulation of gene expression and other cellular processes (see Cashel, M. et al. The Stringent Response. In F. C. Neidhardt et al. (eds) Escherichia coli and Salmonella: cellular and molecular biology, 2n edition, ASM Press, Washington, D.C., 1996). The spoT protein is capable of both the synthesis and degradation of (p)ppGpp while the relA protein is capable of (p)ppGpp synthesis only. The spoT and relA proteins are homologous (55.6% similar, 31.9% identical) (Metzger et al., J. Biol. Chem. 264:9122-9125, 1989).

The genetic organization of the streptokinase region of the Streptococcus equisimilis H46A chromosome has been defined including the sequence of a full length ORF of a relA/spoT homolog, desingated rel (Mechold, U. et al. Mol. Gen. Genet. 241:129-140, 1993). Functional analysis of the rel gene from Streptococcus equisimilis indicates that the encoded protein is similar to E. coli spoT in that it catalzyes both the synthesis and degradation of (p)ppGpp (Mechold, U., et al., J. Bacteriol. 178:1401-1411, 1996).

Clearly, there is a need for factors, such as the novel compounds of the invention, that have a present benefit of being useful to screen compounds for antibiotic activity. Such factors are also useful to determine their role in pathogenesis of infection, dysfunction and disease. There is also a need for identification and characterization of such factors and their antagonists and agonists which can play a role in preventing, ameliorating or correcting infections, dysfunctions or diseases.

The polypeptides of the invention have amino acid sequence homology to a known S. equisimilis rel protein.

SUMMARY OF THE INVENTION

It is an object of the invention to provide polypeptides that have been identified as novel spo/rel polypeptides by homology between the amino acid sequence set out in Table 1 [SEQ ID NO: 2] and a known amino acid sequence or sequences of other proteins such as S. equisimilis rel protein.

It is a further object of the invention to provide polynucleotides that encode spo/rel polypeptides, particularly polynucleotides that encode the polypeptide herein designated spo/rel.

In a particularly preferred embodiment of the invention the polynucleotide comprises a region encoding spo/rel polypeptides comprising the sequence set out in Table 1 [SEQ ID NO:1] which includes a full length gene, or a variant thereof.

In another particularly preferred embodiment of the invention there is a novel spo/rel protein from Streptococcus pneumoniae comprising the amino acid sequence of Table 1 [SEQ ID NO:2], or a variant thereof.

In accordance with another aspect of the invention there is provided an isolated nucleic acid molecule encoding a mature polypeptide expressible by the Streptococcus pneumoniae 0100993 strain contained in the deposited strain.

A further aspect of the invention there are provided isolated nucleic acid molecules encoding spo/rel, particularly Streptococcus pneumoniae spo/rel, including mRNAs, cDNAs, genomic DNAs. Further embodiments of the invention include biologically, diagnostically, prophylactically, clinically or therapeutically useful variants thereof, and compositions comprising the same.

In accordance with another aspect of the invention, there is provided the use of a polynucleotide of the invention for therapeutic or prophylactic purposes, in particular genetic immunization. Among the particularly preferred embodiments of the invention are naturally occurring allelic variants of spo/rel and polypeptides encoded thereby.

Another aspect of the invention there are provided novel polypeptides of Streptococcus pneumoniae referred to herein as spo/rel as well as biologically, diagnostically, prophylactically, clinically or therapeutically useful variants thereof, and compositions comprising the same.

Among the particularly preferred embodiments of the invention are variants of spo/rel polypeptide encoded by naturally occurring alleles of the spo/rel gene.

In a preferred embodiment of the invention there are provided methods for producing the aforementioned spo/rel polypeptides.

In accordance with yet another aspect of the invention, there are provided inhibitors to such polypeptides, useful as antibacterial agents, including, for example, antibodies.

In accordance with certain preferred embodiments of the invention, there are provided products, compositions and methods for assessing spo/rel expression, treating disease, for example, otitis media, conjunctivitis, pneumonia, bacteremia, meningitis, sinusitis, pleural empyema and endocarditis, and most particularly meningitis, such as for example infection of cerebrospinal fluid, assaying genetic variation, and administering a spo/rel polypeptide or polynucleotide to an organism to raise an immunological response against a bacteria, especially a Streptococcus pneumoniae bacteria.

In accordance with certain preferred embodiments of this and other aspects of the invention there are provided polynucleotides that hybridize to spo/rel polynucleotide sequences, particularly under stringent conditions.

In certain preferred embodiments of the invention there are provided antibodies against spo/rel polypeptides.

In other embodiments of the invention there are provided methods for identifying compounds which bind to or otherwise interact with and inhibit or activate an activity of a polypeptide or polynucleotide of the invention comprising: contacting a polypeptide or polynucleotide of the invention with a compound to be screened under conditions to permit binding to or other interaction between the compound and the polypeptide or polynucleotide to assess the binding to or other interaction with the compound, such binding or interaction being associated with a second component capable of providing a detectable signal in response to the binding or interaction of the polypeptide or polynucleotide with the compound; and determining whether the compound binds to or otherwise interacts with and activates or inhibits an activity of the polypetide or polynucleotide by detecting the presence or absence of a signal generated from the binding or interaction of the compound with the polypeptide or polynucleotide.

In accordance with yet another aspect of the invention, there are provided spo/rel agonists and antagonists, preferably bacteriostatic or bacteriocidal agonists and antagonists.

In a further aspect of the invention there are provided compositions comprising a spo/rel polynucleotide or a spo/rel polypeptide for administration to a cell or to a multicellular organism.

Various changes and modifications within the spirit and scope of the disclosed invention will become readily apparent to those skilled in the art from reading the following descriptions and from reading the other parts of the present disclosure.

Glossary

The following definitions are provided to facilitate understanding of certain terms used frequently herein.

“Host cell” is a cell which has been transformed or transfected, or is capable of transformation or transfection by an exogenous polynucleotide sequence.

“Identity,” as known in the art, is a relationship between two or more polypeptide sequences or two or more polynucleotide sequences, as determined by comparing the sequences. In the art, “identity” also means the degree of sequence relatedness between polypeptide or polynucleotide sequences, as the case may be, as determined by the match between strings of such sequences. “Identity” and “similarity” can be readily calculated by known methods, including but not limited to those described in ( Computational Molecular Biology, Lesk, A. M., ed., Oxford University Press, New York, 1988; Biocomputing: Informatics and Genome Projects, Smith, D. W., ed., Academic Press, New York, 1993; Computer Analysis of Sequence Data, Part I, Griffin, A. M., and Griffin, H. G., eds., Humana Press, New Jersey, 1994; Sequence Analysis in Molecular Biology, von Heinje, G., Academic Press, 1987; and Sequence Analysis Primer, Gribskov, M. and Devereux, J., eds., M Stockton Press, New York, 1991; and Carillo, H., and Lipman, D., SIAM J. Applied Math., 48: 1073 (1988). Preferred methods to determine identity are designed to give the largest match between the sequences tested. Methods to determine identity and similarity are codified in publicly available computer programs. Preferred computer program methods to determine identity and similarity between two sequences include, but are not limited to, the GCG program package (Devereux, J., et al., Nucleic Acids Research 12(1): 387 (1984)), BLASTP, BLASTN, and FASTA (Atschul, S. F. et al., J. Molec. Biol. 215: 403-410 (1990). The BLAST X program is publicly available from NCBI and other sources ( BLAST Manual, Altschul, S., et al., NCBI NLM NIH Bethesda, Md. 20894; Altschul, S., et al., J. Mol. Biol. 215: 403-410 (1990). As an illustration, by a polynucleotide having a nucleotide sequence having at least, for example, 95% “identity” to a reference nucleotide sequence of SEQ ID NO: 1 it is intended that the nucleotide sequence of the polynucleotide is identical to the reference sequence except that the polynucleotide sequence may include up to five point mutations per each 100 nucleotides of the reference nucleotide sequence of SEQ ID NO: 1. In other words, to obtain a polynucleotide having a nucleotide sequence at least 95% identical to a reference nucleotide sequence, up to 5% of the nucleotides in the reference sequence may be deleted or substituted with another nucleotide, or a number of nucleotides up to 5% of the total nucleotides in the reference sequence may be inserted into the reference sequence. These mutations of the reference sequence may occur at the 5 or 3 terminal positions of the reference nucleotide sequence or anywhere between those terminal positions, interspersed either individually among nucleotides in the reference sequence or in one or more contiguous groups within the reference sequence. Analogously, by a polypeptide having an amino acid sequence having at least, for example, 95% identity to a reference amino acid sequence of SEQ ID NO:2 is intended that the amino acid sequence of the polypeptide is identical to the reference sequence except that the polypeptide sequence may include up to five amino acid alterations per each 100 amino acids of the reference amino acid of SEQ ID NO: 2. In other words, to obtain a polypeptide having an amino acid sequence at least 95% identical to a reference amino acid sequence, up to 5% of the amino acid residues in the reference sequence may be deleted or substituted with another amino acid, or a number of amino acids up to 5% of the total amino acid residues in the reference sequence may be inserted into the reference sequence. These alterations of the reference sequence may occur at the amino or carboxy terminal positions of the reference amino acid sequence or anywhere between those terminal positions, interspersed either individually among residues in the reference sequence or in one or more contiguous groups within the reference sequence.

“Isolated” means altered “by the hand of man” from its natural state, i.e., if it occurs in nature, it has been changed or removed from its original environment, or both. For example, a polynucleotide or a polypeptide naturally present in a living organism is not “isolated,” but the same polynucleotide or polypeptide separated from the coexisting materials of its natural state is “isolated”, as the term is employed herein.

“Polynucleotide(s)” generally refers to any polyribonucleotide or polydeoxribonucleotide, which may be unmodified RNA or DNA or modified RNA or DNA. “Polynucleotide(s)” include, without limitation, single- and double-stranded DNA, DNA that is a mixture of single- and double-stranded regions or single-, double- and triple-stranded regions, single- and double-stranded RNA, and RNA that is mixture of single- and double-stranded regions, hybrid molecules comprising DNA and RNA that may be single-stranded or, more typically, double-stranded, or triple-stranded regions, or a mixture of single- and double-stranded regions. In addition, “polynucleotide” as used herein refers to triple-stranded regions comprising RNA or DNA or both RNA and DNA. The strands in such regions may be from the same molecule or from different molecules. The regions may include all of one or more of the molecules, but more typically involve only a region of some of the molecules. One of the molecules of a triple-helical region often is an oligonucleotide. As used herein, the term “polynucleotide(s)” also includes DNAs or RNAs as described above that contain one or more modified bases. Thus, DNAs or RNAs with backbones modified for stability or for other reasons are “polynucleotide(s)” as that term is intended herein. Moreover, DNAs or RNAs comprising unusual bases, such as inosine, or modified bases, such as tritylated bases, to name just two examples, are polynucleotides as the term is used herein. It will be appreciated that a great variety of modifications have been made to DNA and RNA that serve many useful purposes known to those of skill in the art. The term “polynucleotide(s)” as it is employed herein embraces such chemically, enzymatically or metabolically modified forms of polynucleotides, as well as the chemical forms of DNA and RNA characteristic of viruses and cells, including, for example, simple and complex cells. “Polynucleotide(s)” also embraces short polynucleotides often referred to as oligonucleotide(s).

“Polypeptide(s)” refers to any peptide or protein comprising two or more amino acids joined to each other by peptide bonds or modified peptide bonds. “Polypeptide(s)” refers to both short chains, commonly referred to as peptides, oligopeptides and oligomers and to longer chains generally referred to as proteins. Polypeptides may contain amino acids other than the 20 gene encoded amino acids. “Polypeptide(s)” include those modified either by natural processes, such as processing and other post-translational modifications, but also by chemical modification techniques. Such modifications are well described in basic texts and in more detailed monographs, as well as in a voluminous research literature, and they are well known to those of skill in the art. It will be appreciated that the same type of modification may be present in the same or varying degree at several sites in a given polypeptide. Also, a given polypeptide may contain many types of modifications. Modifications can occur anywhere in a polypeptide, including the peptide backbone, the amino acid side-chains, and the amino or carboxyl termini. Modifications include, for example, acetylation, acylation, ADP-ribosylation, amidation, covalent attachment of flavin, covalent attachment of a heme moiety, covalent attachment of a nucleotide or nucleotide derivative, covalent attachment of a lipid or lipid derivative, covalent attachment of phosphotidylinositol, cross-linking, cyclization, disulfide bond formation, demethylation, formation of covalent cross-links, formation of cysteine, formation of pyroglutamate, formylation, gamma-carboxylation, glycosylation, GPI anchor formation, hydroxylation, iodination, methylation, myristoylation, oxidation, proteolytic processing, phosphorylation, prenylation, racemization, glycosylation, lipid attachment, sulfation, gamma-carboxylation of glutamic acid residues, hydroxylation and ADP-ribosylation, selenoylation, sulfation, transfer-RNA mediated addition of amino acids to proteins, such as arginylation, and ubiquitination. See, for instance, PROTEINS—STRUCTURE AND MOLECULAR PROPERTIES, 2nd Ed., T. E. Creighton, W. H. Freeman and Company, New York (1993) and Wold, F., Posttranslational Protein Modifications: Perspectives and Prospects, pgs. 1-12 in POSTTRANSLATIONAL COVALENT MODIFICATION OF PROTEINS, B. C. Johnson, Ed., Academic Press, New York (1983); Seifter et al., Meth. Enzymol. 182:626-646 (1990) and Rattan et al., Protein Synthesis: Posttranslational Modifications and Aging, Ann. N.Y. Acad. Sci. 663: 48-62 (1992). Polypeptides may be branched or cyclic, with or without branching. Cyclic, branched and branched circular polypeptides may result from post-translational natural processes and may be made by entirely synthetic methods, as well.

“Variant(s)” as the term is used herein, is a polynucleotide or polypeptide that differs from a reference polynucleotide or polypeptide respectively, but retains essential properties. A typical variant of a polynucleotide differs in nucleotide sequence from another, reference polynucleotide. Changes in the nucleotide sequence of the variant may or may not alter the amino acid sequence of a polypeptide encoded by the reference polynucleotide. Nucleotide changes may result in amino acid substitutions, additions, deletions, fusions and truncations in the polypeptide encoded by the reference sequence, as discussed below. A typical variant of a polypeptide differs in amino acid sequence from another, reference polypeptide. Generally, differences are limited so that the sequences of the reference polypeptide and the variant are closely similar overall and, in many regions, identical. A variant and reference polypeptide may differ in amino acid sequence by one or more substitutions, additions, deletions in any combination. A substituted or inserted amino acid residue may or may not be one encoded by the genetic code. A variant of a polynucleotide or polypeptide may be a naturally occurring such as an allelic variant, or it may be a variant that is not known to occur naturally. Non-naturally occurring variants of polynucleotides and polypeptides may be made by mutagenesis techniques, by direct synthesis, and by other recombinant methods known to skilled artisans.

DESCRIPTION OF THE INVENTION

The invention relates to novel spo/rel polypeptides and polynucleotides as described in greater detail below. In particular, the invention relates to polypeptides and polynucleotides of a novel spo/rel of Streptococcus pneumoniae, which is related by amino acid sequence homology to S. equisimilis rel polypeptide. The invention relates especially to spo/rel having the nucleotide and amino acid sequences set out in Table 1 [SEQ ID NO: 1] and Table 1 [SEQ ID NO: 2] respectively, and to the spo/rel nucleotide sequences of the DNA in the deposited strain and amino acid sequences encoded thereby.

TABLE 1
spo/rel Polynucleotide and Polypeptide Sequences
(A) Sequences from Streptococcus pneumoniae spo/rel polynucleotide sequence [SEQ ID NO: 1].
5′-1	ATGCCGAAAG	AAGTGAATTT	AACAGGCGAA	GAAGTTGTCG	CTTTAACCAA
51	AGAATATTTA	ACGGAAGAGG	ATGTTTATTT	TGTCCATAAG	GCCTTGGTCT
101	ATGCTGTTGA	ATGCCACAGT	GGTCAATATC	GCAAATCAGG	CGAGCCTTAT
151	ATCATTCACC	CTATCCAAGT	GGCAGGTATT	TTAGCTAAGC	TAAAGCTGGA
201	TGCTGTAACA	GTAGCTTGTG	GATTCTTGCA	TGATGTGGTG	GAAGATACAG
251	ATGCGACCTT	GGACGATTTG	GAAAGAGAGT	TTGGTCCTGA	TGTGCGGATG
301	ATTGTTGACG	GAGTTACCAA	GCTTGGCAAG	GTCGAGTACA	AATCGATCGA
351	AGAGCAATTA	GCGGAAAATC	ATCGCAAGAT	GCTCATGGCC	ATGTCTGAGG
401	ACATCCGCTT	TATTTTGGTC	AAACTGTCTG	ACCGCTTGCA	CAATATGCGG
451	ACCCTGAAAC	ATCTTCGAAA	AGACAAGCAG	GAGCGTATTT	CCAAAGAAAC
501	CATGGAAATT	TATGCCCCGC	TTGCCCATCG	TTTGGGGATT	TCCAGTGTCA
551	AATGGGAATT	AGAAGACTTG	TCTTTCCGTT	ATCTCAATCC	AACGGAGTTT
601	TACAAGATTA	CCCATATGAT	GAAGGAAAAG	CGCAGGGAGC	GTGAGGCCTT
651	GGTGGATGAG	GTAGTCACAA	AATTAGAGGA	GTATACGACA	GAACGTCACT
701	TGAAAGGGAA	GATTTATGGT	CGTCCCAAGC	ATATTTACTC	AATTTTCCGC
751	AAAATGCAGG	ACAAGAGAAA	ACGGTTTGAG	GAAATCTATG	ATCTGATTGC
801	TATTCGTTGT	TTTTTAGATA	CCCAAAGTGA	TGTTTATGCC	ATGCTTGGTT
851	ACGTGCATGA	ATTTTGGAAA	CCGATGCCAG	GTCGCTTCAA	AGACTATATC
901	GCCAACCGCA	AGGCCAATGG	TTGTCAGTCT	ATCCATACGA	CTGTTTATGG
951	ACCAAAAGGG	CCGATTGAAT	TCCAGATTCG	AACCAAGGAA	ATGCACGAGG
1001	TGGCTGAGTA	CGGGGTTGCG	GCTCACTGGG	CTTATAAGAA	AGGTATCAAG
1051	GGGCTAGTTA	ACAGCAAGGA	ATCAGCTATT	GGAATGAACT	GGATCAAGGA
1101	GATGATAGAG	CTCCAAGACC	AGGCTGATGA	TGCTAAGGAA	TTTGTGGACT
1151	CTGTTAAGGA	AAACTATCTG	GCTGAGGAGA	TTTACGTTTT	TACCCCAGAT
1201	GGAGCTGTCC	GTTCTCTTCC	CAAAGATTCA	GGACCGATTG	ATTTTGCCTA
1251	CGAAATCCAT	ACCAAGGTCG	GTGAAAAAGC	AACTGGTGCC	AAGGTCAATG
1301	GCCGCATGGT	TCCACTGACA	ACCAAGTTAA	AGACAGGGGA	TCAGGTTGAA
1351	ATTATCGCCA	ACCCGAACTC	CTTTGGACCT	AGCCGTGACT	GGCTCAATAT
1401	GGTCAAGACT	AGCAAGGCGC	GCAATAAGAT	TCGCCAGTTC	TTTAAAAACC
1451	AAGATAAGGA	ATTGTCTGTC	AACAAGGGTC	GTGAGATGCT	GATGGCTCAG
1501	TTCCAAGAAA	ATGGCTATGT	GGCAAATAAA	TTTATGGACA	AGCGCCACAT
1551	GGATCAAGTT	CTGCAAAAGA	CCAGTTACAA	GACAGAAGAC	TCCCTCTTTG
1601	CGGCCATTGG	TTTTGGGGAA	ATCGGTGCGA	TTACCGTCTT	TAACCGTCTG
1651	ACTGAAAAAG	AACGCCGTGA	GGAAGAGCGT	GCCAAGGCCA	AGGCTGAGGC
1701	AGAGGAGCTT	GTCAAAGGTG	GCGAGGTCAA	GGTTGAAAAT	AAGAAACTCT
1751	CCAAGGTCAA	GCATGAGGGG	GGAGTGGTTA	TTGAAGGTGC	TTCTGGTCTC
1801	CTAGTGCGGA	TTGCTAAGTG	TTGTAACCCC	GTGCCTGGTG	ACGATATTGT
1851	TGGCTACATT	ACCAAGGGTC	GTGGTGTGGC	TATTCACCGT	GTGGACTGTA
1901	TGAACCTGCG	TGCCCAAGAA	AACTACGAGC	AACGTCTCCT	TGATGTGGAA
1951	TGGGAAGACC	AGTACTCTAG	CTCAAATAAG	GAGTATATGG	CCCATATGGA
2001	TATCTACGGT	CTCAACCGTA	CAGGACTGTT	GAACGATGTA	CTGCAAGTTC
2051	TTTCAAATAC	AACCAAGAAT	ATTTCAACGG	TCAATGCCCA	ACCAACCAAG
2101	GATATGAAGT	TTGCTAATAT	CCATGTGTCC	TTCGGTATTG	CCAACCTCTC
2151	TACACTGACC	ACGGTTGTCG	ATAAAATTAA	GAGTGTGCCA	GAAGTTTACT
2201	CTGTCAAACG	GACCAACGGC-3′
(B) spo/rel polypeptide sequence deduced from the plynucleotide sequence in this table [SEQ ID NO: 2].
NH 2 -1	MPKEVNLTGE	EVVALTKEYL	TEEDVYFVHK	ALVYAVECHS	GQYRKSGEPY
51	IIHPIQVAGI	LAKLKLDAVT	VACGFLHDVV	EDTDATLDDL	EREFGPDVRM
101	IVDGVTKLGK	VEYKSIEEQL	AENHRKMLMA	MSEDIRFILV	KLSDRLHNMR
151	TLKHLRKDKQ	ERISKETMEI	YAPLAHRLGI	SSVKWELEDL	SFRYLNPTEF
201	YKITHMMKEK	RREREALVDE	VVTKLEEYTT	ERHLKGKIYG	RPKHIYSIFR
251	KMQDKRKRFE	EIYDLIAIRC	FLDTQSDVYA	MLGYVHEFWK	PMPGRFKDYI
301	ANRKANGCQS	IHTTVYGPKG	PIEFQIRTKE	MHEVAEYGVA	AHWAYKKGIK
351	GLVNSKESAI	GMNWIKEMIE	LQDQADDAKE	FVDSVKENYL	AEEIYVFTPD
401	GAVRSLPKDS	GPIDFAYEIH	TKVGEKATGA	KVNGRMVPLT	TKLKTGDQVE
451	IIANPNSFGP	SRDWLNMVKT	SKARNKIRQF	FKNQDKELSV	NKGREMLMAQ
501	FQENGYVANK	FMDKRHMDQV	LQKTSYKTED	SLFAAIGFGE	IGAITVFNRL
551	TEKERREEER	AKAKAEAEEL	VKGGEVKVEN	KKLSKVKHEG	GVVIEGASGL
601	LVRIAKCCNP	VPGDDIVGYI	TKGRGVAIHR	VDCMNLRAQE	NYEQRLLDVE
651	WEDQYSSSNK	EYMAHIDIYG	LNRTGLLNDV	LQVLSNTTKN	ISTVNAQPTK
701	DMKFANIHVS	FGIANLSTLT	TVVDKIKISVP	EVYSVKRTNG-COOH
(C) Polynucleotide sequence embodiment [SEQ ID NO: 1].
X—(R 1 ) n -1	ATGCCGAAAG	AAGTGAATTT	AACAGGCGAA	GAAGTTGTCG	CTTTAACCAA
51	AGAATATTTA	ACGGAAGAGG	ATGTTTATTT	TGTCCATAAG	GCCTTGGTCT
101	ATGCTGTTGA	ATGCCACAGT	GGTCAATATC	GCAAATCAGG	CGAGCCTTAT
151	ATCATTCACC	CTATCCAAGT	GGCAGGTATT	TTAGCTAAGC	TAAAGCTGGA
201	TGCTGTAACA	GTAGCTTGTG	GATTCTTGCA	TGATGTGGTG	GAAGATACAG
251	ATGCGACCTT	GGACGATTTG	GAAAGAGAGT	TTGGTCCTGA	TGTGCGGATG
301	ATTGTTGACG	GAGTTACCAA	GCTTGGCAAG	GTCGAGTACA	AATCGATCGA
351	AGAGCAATTA	GCGGAAAATC	ATCGCAAGAT	GCTCATGGCC	ATGTCTGAGG
401	ACATCCGCTT	TATTTTGGTC	AAACTGTCTG	ACCGCTTGCA	CAATATGCGG
451	ACCCTGAAAC	ATCTTCGAAA	AGACAAGCAG	GAGCGTATTT	CCAAAGAAAC
501	CATGGAAATT	TATGCCCCGC	TTGCCCATCG	TTTGGGGATT	TCCAGTGTCA
551	AATGGGAATT	AGAAGACTTG	TCTTTCCGTT	ATCTCAATCC	AACGGAGTTT
601	TACAAGATTA	CCCATATGAT	GAAGGAAAAG	CGCAGGGAGC	GTGAGGCCTT
651	GGTGGATGAG	GTAGTCACAA	AATTAGAGGA	GTATACGACA	GAACGTCACT
701	TGAAAGGGAA	GATTTATGGT	CGTCCCAAGC	ATATTTACTC	AATTTTCCGC
751	AAAATGCAGG	ACAAGAGAAA	ACGGTTTGAG	GAAATCTATG	ATCTGATTGC
801	TATTCGTTGT	TTTTTAGATA	CCCAAAGTGA	TGTTTATGCC	ATGCTTGGTT
851	ACGTGCATGA	ATTTTGGAAA	CCGATGCCAG	GTCGCTTCAA	AGACTATATC
901	GCCAACCGCA	AGGCCAATGG	TTGTCAGTCT	ATCCATACGA	CTGTTTATGG
951	ACCAAAAGGG	CCGATTGAAT	TCCAGATTCG	AACCAAGGAA	ATGCACGAGG
1001	TGGCTGAGTA	CGGGGTTGCG	GCTCACTGGG	CTTATAAGAA	AGGTATCAAG
1051	GGGCTAGTTA	ACAGCAAGGA	ATCAGCTATT	GGAATGAACT	GGATCAAGGA
1101	GATGATAGAG	CTCCAAGACC	AGGCTGATGA	TGCTAAGGAA	TTTGTGGACT
1151	CTGTTAAGGA	AAACTATCTG	GCTGAGGAGA	TTTACGTTTT	TACCCCAGAT
1201	GGAGCTGTCC	GTTCTCTTCC	CAAAGATTCA	GGACCGATTG	ATTTTGCCTA
1251	CGAAATCCAT	ACCAAGGTCG	GTGAAAAAGC	AACTGGTGCC	AAGGTCAATG
1301	GCCGCATGGT	TCCACTGACA	ACCAAGTTAA	AGACAGGGGA	TCAGGTTGAA
1351	ATTATCGCCA	ACCCGAACTC	CTTTGGACCT	AGCCGTGACT	GGCTCAATAT
1401	GGTCAAGACT	AGCAAGGCGC	GCAATAAGAT	TCGCCAGTTC	TTTAAAAACC
1451	AAGATAAGGA	ATTGTCTGTC	AACAAGGGTC	GTGAGATGCT	GATGGCTCAG
1501	TTCCAAGAAA	ATGGCTATGT	GGCAAATAAA	TTTATGGACA	AGCGCCACAT
1551	GGATCAAGTT	CTGCAAAAGA	CCAGTTACAA	GACAGAAGAC	TCCCTCTTTG
1601	CGGCCATTGG	TTTTGGGGAA	ATCGGTGCGA	TTACCGTCTT	TAACCGTCTG
1651	ACTGAAAAAG	AACGCCGTGA	GGAAGAGCGT	GCCAAGGCCA	AGGCTGAGGC
1701	AGAGGAGCTT	GTCAAAGGTG	GCGAGGTCAA	GGTTGAAAAT	AAGAAACTCT
1751	CCAAGGTCAA	GCATGAGGGG	GGAGTGGTTA	TTGAAGGTGC	TTCTGGTCTC
1801	CTAGTGCGGA	TTGCTAAGTG	TTGTAACCCC	GTGCCTGGTG	ACGATATTGT
1851	TGGCTACATT	ACCAAGGGTC	GTGGTGTGGC	TATTCACCGT	GTGGACTGTA
1901	TGAACCTGCG	TGCCCAAGAA	AACTACGAGC	AACGTCTCCT	TGATGTGGAA
1951	TGGGAAGACC	AGTACTCTAG	CTCAAATAAG	GAGTATATGG	CCCATATCGA
2001	TATCTACGGT	CTCAACCGTA	CAGGACTGTT	GAACGATGTA	CTGCAAGTTC
2051	TTTCAAATAC	AACCAAGAAT	ATTTCAACGG	TCAATGCCCA	ACCAACCAAG
2101	GATATGAAGT	TTGCTAATAT	CCATGTGTCC	TTCGGTATTG	CCAACCTCTC
2151	TACACTGACC	ACGGTTGTCG	ATAAAATTAA	GAGTGTGCCA	GAAGTTTACT
2201	CTGTCAAACG	GACCAACGGC-(R 2 ) n -Y
(D) Polypeptide sequence embodiments [SEQ ID NO: 2].
X—(R 1 ) n -1	MPKEVNLTGE	EVVALTKEYL	TEEDVYFVHK	ALVYAVECHS	GQYRKSGEPY
51	IIHPIQVAGI	LAKLKLDAVT	VACGFLHDVV	EDTDATLDDL	EFEFGPDVRM
101	IVDGVTKLGK	VEYKSIEEQL	AENHRKMLMA	MSEDIRFILV	KLSDRLHNMR
151	TLKHLRKDKQ	ERISKETMEI	YAPLAHRLGI	SSVKWELEDL	SFRYLNPTEF
201	YKITHMMKEK	RREREALVDE	VVTKLEEYTT	ERHLKGKIYG	RPKHIYSIFR
251	KMQDKRKRFE	EIYDLIAIRC	FLDTQSDVYA	MLGYVHEFWK	PMPGRFKDYI
301	ANRKANGCQS	IHTTVYGPKG	PIEFQIRTKE	MHEVAEYGVA	AHWAYKKGIK
351	GLVNSKESAI	GMNWIKEMIE	LQDQADDAKE	FVDSVKENYL	AEEIYVFTPD
401	GAVRSLPKDS	GPIDFAYEIH	TKVGEKATGA	KVNGRMVPLT	TKLKTGDQVE
451	IIANPNSFGP	SRDWLNMVKT	SKARNKIRQF	FKNQDKELSV	NKGREMLMAQ
501	FQENGYVANK	FMDKRHMDQV	LQKTSYKTED	SLFAAIGFGE	IGAITVFNRL
551	TEKERREEER	AKAKAEAEEL	VKGGEVKVEN	KKLSKVKHEG	GVVIEGASGL
601	LVRIAKCCNP	VPGDDIVGYI	TKGRGVAIHR	VDCMNLRAQE	NYEQRLLDVE
651	WEDQYSSSNK	EYMAHIDIYG	LNRTGLLNDV	LQVLSNTTKN	ISTVNAQPTK
701	DMKFANIHVS	FGIANLSTLT	TVVDKIKSVP	EVYSVKRTNG-(R 2 ) n -Y
(E) Sequences from Streptococcus pneumoniae spo/rel polynucleotide sequence [SEQ
ID NO: 3] open reading frame encoding the amino terminal proximal portion of spo/rel
beginning at nucleotide number 3.
5′-1	ATACAGATGC	GACCTTGGAC	GATTTGGAAA	GAGAGTTTGG	TCCTGATGTG
51	CGGATGATTG	TTGACGGAGT	TACCAAGCTT	GGCAAGGTCG	AGTACAAATC
101	GATCGAAGAG	CAATTAGCGG	AAAATCATCG	CAAGATGCTC	ATGGCCATGT
151	CTGAGGACAT	CCGCTTTATT	TTGGTCAAAC	TGTCTGACCG	CTTGCACAAT
201	ATGCGGACCC	TGAAACATCT	TCGAAAAGAC	AAGCAGGAGC	GTATTTCCAA
251	AGAAACCATG	GAAATTTATG	CCCCGCTTGC	CCATCGTTTG	GGGATTTCCA
301	GTGTCAAATG	GGAATTAGAA	GACTTGTCTT	TCCGTTATCT	CAATCCAACG
351	GAGTTTTACA	AGATTACCCA	TATGATGAAG	GAAAAGCGCA	GGGAGCGTGA
401	GGCCTTGGTG	GATGAGGTAG	TCACAAAATT	AGAGGAGTAT	ACGACAGAAC
451	GTCACTTGAA	AGGGAAGATT	TATGGTCGTC	CCAAGCATAT	TTACTCAATT
501	TTCCGCAAAA	TGCAGGACAA	GAGAAAACGG	TTTGAGGAAA	TCTATGATCT
551	GATTGCTATT	CGTTGTTTTT	TAGATACCCA	AAGTGATGTT	TATGCCATGC
601	TTGGTTACGT	GCATGAATTT	TGGAAACCGA	TGCCAGGTCG	CTTCAAAGAC
651	TATATCGCCA	ACCGCAAGGC	CAATGGTTGT	CAGTCTATCC	ATACGACTGT
701	TTATGGACCA	AAAGGGCCGA	TTGAATTCCA	GATTCGAACC	AAGGAAATGC
751	ACGAGGTGGC	TGAGTACGGG	GTTGCGGCTC	ACTGGGCTTA	TAAGAAAGGT
801	ATCAAGGGGC	TAGTTAACAG	CAAGGAATCA	GCTATTGGAA	TGAACTGGAT
851	CAAGGAG-3′
(F) Sequences from Streptococcus pneumoniae spo/rel polynucleotide sequence [SEQ
ID NO: 5] open reading frame encoding distal terminal portion of spo/rel beginning at
nucleotide number 19.
5′-1	CTCCAAGACC	AGGCTGATGA	TGCTAAGGAA	TTTGTGGACT	CTGTTAAGGA
51	AAACTATCTG	GCTGAGGAGA	TTTACGTTTT	TACCCCAGAT	GGAGCTGTCC
101	GTTCTCTTCC	CAAAGATTCA	GGACCGATTG	ATTTTGCCTA	CGAAATCCAT
151	ACCAAGGTCG	GTGAAAAAGC	AACTGGTGCC	AAGGTCAATG	GCCGCATGGT
201	TCCACTGACA	ACCAAGTTAA	AGACAGGGGA	TCAGGTTGAA	ATTATCGCCA
251	ACCCGAACTC	CTTTGGACCT	AGCCGTGACT	GGCTCAATAT	GGTCAAGACT
301	AGCAAGGCGC	GCAATAAGAT	TCGCCAGTTC	TTTAAAAACC	AAGATAAGGA
351	ATTGTCTGTC	AACAAGGGTC	GTGAGATGCT	GATGGCTCAG	TTCCAAGAAA
401	ATGGCTATGT	GGCAAATAAA	TTTATGGACA	AGCGCCACAT	GGATCAAGTT
451	CTGCAAAAGA	CCAGTTACAA	GACAGAAGAC	TCCCTCTTTG	CGGCCATTGG
501	TTTTGGGGAA	ATCGGTGCGA	TTACCGTCTT	TAACCGTCTG	ACTGAAAAAG
551	AACGCCGTGA	GGAAGAGCGT	GCCAAGGCCA	AGGCTGAGGC	AGAGGAGCTT
601	GTCAAAGGTG	GCGAGGTCAA	GGTTGAAAAT	AAGAAACTCT	CCAAGGTCAA
651	GCATGAGGGG	GGAGTGGTTA	TTGAAGGTGC	TTCTGGTCTC	CTAGTGCGGA
701	TTGCTAAGTG	TTGTAACCCC	GTGCCTGGTG	ACGATATTGT	TGGCTACATT
751	ACCAAGGGTC	GTGGTGTGGC	TATTCACCGT	GTGGACTGTA	TGAACCTGCG
801	TGCCCAAGAA	AACTACGAGC	AACGTCTCCT	TGATGTGGAA	TGGGAAGACC
851	AGTACTCTAG	CTCAAATAAG	GAGTATATGG	CCCATATCGA	TATCTACGGT
901	CTCAACCGTA	CAGGACTGTT	GAACGATGTA	CTGCAAGTTC	TTTCAAATAC
951	AACCAAGAAT	ATTTCAACGG	TCAATGCCCA	ACCAACCAAG	GATATGAAGT
1001	TTGCTAATAT	CCATGTGTCC	TTCGGTATTG	CCAACCTCTC	TACACTGACC
1051	ACGGTTGTCG	ATAAAATTAA	GAGTGTGCCA	GAAGTTTACT	CTGTCAAACG
1101	GACCAACGGC	TAG-3′
(G) spo/rel polypeptide sequence deduced from the polynucleotide ORF sequence [SEQ
ID NO: 3] in this table [SEQ ID NO: 4].
NH 2 -1	TDATLDDLER	EFGPDVRMIV	DGVTKLGKVE	YKSIEEQLAE	NHRKMLMAMS
51	EDIRFILVKL	SDRLHNMRTL	KHLRKDKQER	ISKETMEIYA	PLAHRLGISS
101	VKWELEDLSF	RYLNPTEFYK	ITHMMKEKRR	EREALVDEVV	TKLEEYTTER
151	HLKGKIYGRP	KHIYSIFRKM	QDKRKRFEEI	YDLIAIRCFL	DTQSDVYAML
201	GYVHEFWKPM	PGRFKDYIAN	RKANGCQSIH	TTVYGPKGPI	EFQIRTKEMH
251	EVAEYGVAAH	WAYKKGIKGL	VNSKESAIGM	NWIKEM-COOH
(H) spo/rel polypeptide sequence deduced from the polynucleotide ORF sequence [SEQ
ID NO: 5] in this table [SEQ ID NO: 6].
NH 2 -1	DAKEFVDSVK	ENYLAEEIYV	FTPDGAVRSL	PKDSGPIDFA	YEIHTKVGEK
51	ATGAKVNGRM	VPLTTKLKTG	DQVEIIANPN	SFGPSRDWLN	MVKTSKARNK
101	IRQFFKNQDK	ELSVNKGREM	LMAQFQENGY	VANKFMDKRH	MDQVLQKTSY
151	KTEDSLFAAI	GFGEIGAITV	FNRLTEKERR	EEERAKAKAE	AEELVKGGEV
201	KVENKKLSKV	KHEGGVVIEG	ASGLLVRIAK	CCNPVPGDDI	VGYITKGRGV
251	AIHRVDCMNL	RAQENYEQRL	LDVEWEDQYS	SSNKEYMAHI	DIYGLNRTGL
301	LNDVLQVLSN	TTKNISTVNA	QPTKDMKFAN	IHVSFGIANL	STLTTVVDKI

Deposited materials

A deposit containing a Streptococcus pneumoniae 0100993 strain has been deposited with the National Collections of Industrial and Marine Bacteria Ltd. (herein “NCIMB”), 23 St. Machar Drive, Aberdeen AB2 1RY, Scotland on Apr. 11, 1996 and assigned deposit number 40794. The deposit was described as Streptococcus pneumoniae 0100993 on deposit. On Apr. 17, 1996 a Streptococcus pneumoniae 0100993 DNA library in E. coli was similarly deposited with the NCIMB and assigned deposit number 40800. The Streptococcus pneumoniae strain deposit is referred to herein as “the deposited strain” or as “the DNA of the deposited strain.”

The deposited strain contains the full length spo/rel gene. The sequence of the polynucleotides contained in the deposited strain, as well as the amino acid sequence of the polypeptide encoded thereby, are controlling in the event of any conflict with any description of sequences herein.

The deposit of the deposited strain has been made under the terms of the Budapest Treaty on the International Recognition of the Deposit of Micro-organisms for Purposes of Patent Procedure. The strain will be irrevocably and without restriction or condition released to the public upon the issuance of a patent. The deposited strain is provided merely as convenience to those of skill in the art and is not an admission that a deposit is required for enablement, such as that required under 35 U.S.C. §112.

A license may be required to make, use or sell the deposited strain, and compounds derived therefrom, and no such license is hereby granted.

Polypeptides

The polypeptides of the invention include the polypeptide of Table 1 [SEQ ID NO:2] (in particular the mature polypeptide) as well as polypeptides and fragments, particularly those which have the biological activity of spo/rel, and also those which have at least 78% identity to a polypeptide of Table 1 [SEQ ID NOS:2 and 4] or the relevant portion, preferably at least 80% identity to a polypeptide of Table 1 [SEQ ID NOS:2 and 4], and more preferably at least 90% similarity (more preferably at least 90% identity) to a polypeptide of Table 1 [SEQ ID NOS:2 and 4] and still more preferably at least 95% similarity (still more preferably at least 95% identity) to a polypeptide of Table 1 [SEQ ID NOS:2 and 4] and also include portions of such polypeptides with such portion of the polypeptide generally containing at least 30 amino acids and more preferably at least 50 amino acids.

The invention also includes polypeptides of the formula set forth in Table 1 (D) [SEQ ID NO:2] wherein, at the amino terminus, X is hydrogen, and at the carboxyl terminus, Y is hydrogen or a metal, R 1 and R 2 is any amino acid residue, and n is an integer between 1 and 1000. Any stretch of amino acid residues denoted by either R group, where R is greater than 1, may be either a heteropolymer or a homopolymer, preferably a heteropolymer.

A fragment is a variant polypeptide having an amino acid sequence that entirely is the same as part but not all of the amino acid sequence of the aforementioned polypeptides. As with spo/rel polypeptides fragments may be “free-standing,” or comprised within a larger polypeptide of which they form a part or region, most preferably as a single continuous region, a single larger polypeptide.

Preferred fragments include, for example, truncation polypeptides having a portion of an amino acid sequence of Table 1 [SEQ ID NOS:2, 4 and 6], or of variants thereof, such as a continuous series of residues that includes the amino terminus, or a continuous series of residues that includes the carboxyl terminus. Degradation forms of the polypeptides of the invention in a host cell, particularly a Streptococcus pneumoniae, are also preferred. Further preferred are fragments characterized by structural or functional attributes such as fragments that comprise alpha-helix and alpha-helix forming regions, beta-sheet and beta-sheet-forming regions, turn and turn-forming regions, coil and coil-forming regions, hydrophilic regions, hydrophobic regions, alpha amphipathic regions, beta amphipathic regions, flexible regions, surface-forming regions, substrate binding region, and high antigenic index regions.

Also preferred are biologically active fragments which are those fragments that mediate activities of spo/rel, including those with a similar activity or an improved activity, or with a decreased undesirable activity. Also included are those fragments that are antigenic or immunogenic in an animal, especially in a human. Particularly preferred are fragments comprising receptors or domains of enzymes that confer a function essential for viability of Streptococcus pneumoniae or the ability to initiate, or maintain cause disease in an individual, particularly a human.

Variants that are fragments of the polypeptides of the invention may be employed for producing the corresponding full-length polypeptide by peptide synthesis; therefore, these variants may be employed as intermediates for producing the full-length polypeptides of the invention.

Polynucleotides

Another aspect of the invention relates to isolated polynucleotides, including the full length gene, that encode the spo/rel polypeptide having a deduced amino acid sequence of Table 1 [SEQ ID NOS:2, 4 and 6] and polynucleotides closely related thereto and variants thereof.

Using the information provided herein, such as a polynucleotide sequence set out in Table 1 [SEQ ID NOS:1, 3 and 5], a polynucleotide of the invention encoding spo/rel polypeptide may be obtained using standard cloning and screening methods, such as those for cloning and sequencing chromosomal DNA fragments from bacteria using Streptococcus pneumoniae 0100993 cells as starting material, followed by obtaining a full length clone. For example, to obtain a polynucleotide sequence of the invention, such as a sequence given in Table 1 [SEQ ID NOS:1, 3 and 5], typically a library of clones of chromosomal DNA of Streptococcus pneumoniae 0100993 in E. coli or some other suitable host is probed with a radiolabeled oligonucleotide, preferably a 17-mer or longer, derived from a partial sequence. Clones carrying DNA identical to that of the probe can then be distinguished using stringent conditions. By sequencing the individual clones thus identified with sequencing primers designed from the original sequence it is then possible to extend the sequence in both directions to determine the full gene sequence. Conveniently, such sequencing is performed using denatured double stranded DNA prepared from a plasmid clone. Suitable techniques are described by Maniatis, T., Fritsch, E. F. and Sambrook et al., MOLECULAR CLONING, A LABORATORY MANUAL, 2nd Ed.; Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y. (1989). (see in particular Screening By Hybridization 1.90 and Sequencing Denatured Double-Stranded DNA Templates 13.70). Illustrative of the invention, the polynucleotide set out in Table 1 [SEQ ID NO: 1] was discovered in a DNA library derived from Streptococcus pneumoniae 0100993.

The DNA sequence set out in Table 1 [ SEQ ID NO:1] contains an open reading frame encoding a protein having about the number of amino acid residues set forth in Table 1 [SEQ ID NO:2] with a deduced molecular weight that can be calculated using amino acid residue molecular weight values well known in the art. The start codon of the DNA in Table 1 is nucleotide number 1 and last codon that encodes an amino acid is number 2220, the stop codon being the next codon following this last codon encoding an amino acid.

spo/rel of the invention is structurally related to other proteins of the spoT/relA family, as shown by the results of sequencing the DNA encoding spo/rel of the deposited strain. The protein exhibits greatest homology to S. equisimilis rel protein among known proteins. spo/rel of Table 1 [SEQ ID NO:2] has about 77% identity over its entire length and about 87% similarity over its entire length with the amino acid sequence of S. equisimilis rel polypeptide.

The invention provides a polynucleotide sequence identical over its entire length to the coding sequence in Table 1 [SEQ ID NO:1]. Also provided by the invention is the coding sequence for the mature polypeptide or a fragment thereof, by itself as well as the coding sequence for the mature polypeptide or a fragment in reading frame with other coding sequence, such as those encoding a leader or secretory sequence, a pre-, or pro- or prepro- protein sequence. The polynucleotide may also contain non-coding sequences, including for example, but not limited to non-coding 5′ and 3′ sequences, such as the transcribed, non-translated sequences, termination signals, ribosome binding sites, sequences that stabilize mRNA, introns, polyadenylation signals, and additional coding sequence which encode additional amino acids. For example, a marker sequence that facilitates purification of the fused polypeptide can be encoded. In certain embodiments of the invention, the marker sequence is a hexa-histidine peptide, as provided in the pQE vector (Qiagen, Inc.) and described in Gentz et al., Proc. Natl. Acad. Sci., USA 86: 821-824 (1989), or an HA tag (Wilson et al., Cell 37: 767 (1984). Polynucleotides of the invention also include, but are not limited to, polynucleotides comprising a structural gene and its naturally associated sequences that control gene expression.

A preferred embodiment of the invention is the polynucleotide of comprising nucleotide 1 to 2220 set forth in SEQ ID NO: 1 of Table 1 which encodes the spo/rel polypeptide.

The invention also includes polynucleotides of the formula set forth in Table 1 (C)[SEQ ID NO:1] wherein, at the 5′ end of the molecule, X is hydrogen, and at the 3′ end of the molecule, Y is hydrogen or a metal, R 1 and R 2 is any nucleic acid residue, and n is an integer between 1 and 1000. Any stretch of nucleic acid residues denoted by either R group, where R is greater than 1, may be either a heteropolymer or a homopolymer, preferably a heteropolymer.

The term “polynucleotide encoding a polypeptide” as used herein encompasses polynucleotides that include a sequence encoding a polypeptide of the invention, particularly a bacterial polypeptide and more particularly a polypeptide of the Streptococcus pneumoniae spo/rel having the amino acid sequence set out in Table 1 [SEQ ID NO:2]. The term also encompasses polynucleotides that include a single continuous region or discontinuous regions encoding the polypeptide (for example, interrupted by integrated phage or an insertion sequence or editing) together with additional regions, that also may contain coding and/or non-coding sequences.

The invention further relates to variants of the polynucleotides described herein that encode for variants of the polypeptide having the deduced amino acid sequence of Table 1 [SEQ ID NO:2]. Variants that are fragments of the polynucleotides of the invention may be used to synthesize full-length polynucleotides of the invention.

Further particularly preferred embodiments are polynucleotides encoding spo/rel variants, that have the amino acid sequence of spo/rel polypeptide of Table 1 [SEQ ID NO:2] in which several, a few, 5 to 10, 1 to 5, 1 to 3, 2, 1 or no amino acid residues are substituted, deleted or added, in any combination. Especially preferred among these are silent substitutions, additions and deletions, that do not alter the properties and activities of spo/rel.

Further preferred embodiments of the invention are polynucleotides that are at least 78% identical over their entire length to a polynucleotide encoding spo/rel polypeptide having an amino acid sequence set out in Table 1 [SEQ ID NOS:2, 4 and 6], and polynucleotides that are complementary to such polynucleotides. Alternatively, most highly preferred are polynucleotides that comprise a region that is at least 80%. identical over its entire length to a polynucleotide encoding spo/rel polypeptide of the deposited strain and polynucleotides complementary thereto. In this regard, polynucleotides at least 90% identical over their entire length to the same are particularly preferred, and among these particularly preferred polynucleotides, those with at least 95% are especially preferred. Furthermore, those with at least 97% are highly preferred among those with at least 95%, and among these those with at least 98% and at least 99% are particularly highly preferred, with at least 99% being the more preferred.

Preferred embodiments are polynucleotides that encode polypeptides that retain substantially the same biological function or activity as the mature polypeptide encoded by the DNA of Table 1 [SEQ ID NO:1].

The invention further relates to polynucleotides that hybridize to the herein above-described sequences. In this regard, the invention especially relates to polynucleotides that hybridize under stringent conditions to the herein above-described polynucleotides. As herein used, the terms “stringent conditions” and “stringent hybridization conditions” mean hybridization will occur only if there is at least 95% and preferably at least 97% identity between the sequences. An example of stringent hybridization conditions is overnight incubation at 42° C. in a solution comprising: 50% formamide, 5×SSC (150 mM NaCl, 15 mM trisodium citrate), 50 mM sodium phosphate (pH7.6), 5×Denhardt's solution, 10% dextran sulfate, and 20 micrograms/ml denatured, sheared salmon sperm DNA, followed by washing the hybridization support in 0.1×SSC at about 65° C. Hybridization and wash conditions are well known and exemplified in Sambrook, et al., Molecular Cloning: A Laboratory Manual, Second Edition, Cold Spring Harbor, N.Y., (1989), particularly Chapter 11 therein.

The invention also provides a polynucleotide consisting essentially of a polynucleotide sequence obtainable by screening an appropriate library containing the complete gene for a polynucleotide sequence set forth in SEQ ID NO:1 or SEQ ID NO:3 under stringent hybridization conditions with a probe having the sequence of said polynucleotide sequence set forth in SEQ ID NO:1 or a fragment thereof; and isolating said DNA sequence. Fragments useful for obtaining such a polynucleotide include, for example, probes and primers described elsewhere herein.

As discussed additionally herein regarding polynucleotide assays of the invention, for instance, polynucleotides of the invention as discussed above, may be used as a hybridization probe for RNA, cDNA and genomic DNA to isolate full-length cDNAs and genomic clones encoding spo/rel and to isolate cDNA and genomic clones of other genes that have a high sequence similarity to the spo/rel gene. Such probes generally will comprise at least 15 bases. Preferably, such probes will have at least 30 bases and may have at least 50 bases. Particularly preferred probes will have at least 30 bases and will have 50 bases or less.

For example, the coding region of the spo/rel gene may be isolated by screening using the DNA sequence provided in SEQ ID NO: 1 to synthesize an oligonucleotide probe. A labeled oligonucleotide having a sequence complementary to that of a gene of the invention is then used to screen a library of cDNA, genomic DNA or mRNA to determine which members of the library the probe hybridizes to.

The polynucleotides and polypeptides of the invention may be employed, for example, as research reagents and materials for discovery of treatments of and diagnostics for disease, particularly human disease, as further discussed herein relating to polynucleotide assays.

Polynucleotides of the invention that are oligonucleotides derived from the sequences of SEQ ID NOS:1 and/or 2 may be used in the processes herein as described, but preferably for PCR, to determine whether or not the polynucleotides identified herein in whole or in part are transcribed in bacteria in infected tissue. It is recognized that such sequences will also have utility in diagnosis of the stage of infection and type of infection the pathogen has attained.

The invention also provides polynucleotides that may encode a polypeptide that is the mature protein plus additional amino or carboxyl-terminal amino acids, or amino acids interior to the mature polypeptide (when the mature form has more than one polypeptide chain, for instance). Such sequences may play a role in processing of a protein from precursor to a mature form, may allow protein transport, may lengthen or shorten protein half-life or may facilitate manipulation of a protein for assay or production, among other things. As generally is the case in vivo, the additional amino acids may be processed away from the mature protein by cellular enzymes.

A precursor protein, having the mature form of the polypeptide fused to one or more prosequences may be an inactive form of the polypeptide. When prosequences are removed such inactive precursors generally are activated. Some or all of the prosequences may be removed before activation. Generally, such precursors are called proproteins.

In sum, a polynucleotide of the invention may encode a mature protein, a mature protein plus a leader sequence (which may be referred to as a preprotein), a precursor of a mature protein having one or more prosequences that are not the leader sequences of a preprotein, or a preproprotein, which is a precursor to a proprotein, having a leader sequence and one or more prosequences, which generally are removed during processing steps that produce active and mature forms of the polypeptide.

Vectors, host cells, expression

The invention also relates to vectors that comprise a polynucleotide or polynucleotides of the invention, host cells that are genetically engineered with vectors of the invention and the production of polypeptides of the invention by recombinant techniques. Cell-free translation systems can also be employed to produce such proteins using RNAs derived from the DNA constructs of the invention.

For recombinant production, host cells can be genetically engineered to incorporate expression systems or portions thereof or polynucleotides of the invention. Introduction of a polynucleotide into the host cell can be effected by methods described in many standard laboratory manuals, such as Davis et al., BASIC METHODS IN MOLECULAR BIOLOGY, (1986) and Sambrook et al., MOLECULAR CLONING: A LABORATORY MANUAL, 2nd Ed., Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y. (1989), such as, calcium phosphate transfection, DEAE-dextran mediated transfection, transvection, microinjection, cationic lipid-mediated transfection, electroporation, transduction, scrape loading, ballistic introduction and infection.

Representative examples of appropriate hosts include bacterial cells, such as streptococci, staphylococci, enterococci E. coli, streptomyces and Bacillus subtilis cells; fungal cells, such as yeast cells and Aspergillus cells; insect cells such as Drosophila S2 and Spodoptera Sf9 cells; animal cells such as CHO, COS, HeLa, C127, 3T3, BHK, 293 and Bowes melanoma cells; and plant cells.

A great variety of expression systems can be used to produce the polypeptides of the invention. Such vectors include, among others, chromosomal, episomal and virus-derived vectors, e.g., vectors derived from bacterial plasmids, from bacteriophage, from transposons, from yeast episomes, from insertion elements, from yeast chromosomal elements, from viruses such as baculoviruses, papova viruses, such as SV40, vaccinia viruses, adenoviruses, fowl pox viruses, pseudorabies viruses and retroviruses, and vectors derived from combinations thereof, such as those derived from plasmid and bacteriophage genetic elements, such as cosmids and phagemids. The expression system constructs may contain control regions that regulate as well as engender expression. Generally, any system or vector suitable to maintain, propagate or express polynucleotides and/or to express a polypeptide in a host may be used for expression in this regard. The appropriate DNA sequence may be inserted into the expression system by any of a variety of well-known and routine techniques, such as, for example, those set forth in Sambrook et al., MOLECULAR CLONING, A LABORATORY MANUAL, (supra).

For secretion of the translated protein into the lumen of the endoplasmic reticulum, into the periplasmic space or into the extracellular environment, appropriate secretion signals may be incorporated into the expressed polypeptide. These signals may be endogenous to the polypeptide or they may be heterologous signals.

Polypeptides of the invention can be recovered and purified from recombinant cell cultures by well-known methods including ammonium sulfate or ethanol precipitation, acid extraction, anion or cation exchange chromatography, phosphocellulose chromatography, hydrophobic interaction chromatography, affinity chromatography, hydroxylapatite chromatography, and lectin chromatography. Most preferably, high performance liquid chromatography is employed for purification. Well known techniques for refolding protein may be employed to regenerate active conformation when the polypeptide is denatured during isolation and or purification.

Diagnostic Assays

This invention is also related to the use of the spo/rel polynucleotides of the invention for use as diagnostic reagents. Detection of spo/rel in a eukaryote, particularly a mammal, and especially a human, will provide a diagnostic method for diagnosis of a disease. Eukaryotes (herein also “individual(s)”), particularly mammals, and especially humans, infected with an organism comprising the spo/rel gene may be detected at the nucleic acid level by a variety of techniques.

Nucleic acids for diagnosis may be obtained from an infected individual's cells and tissues, such as bone, blood, muscle, cartilage, and skin. Genomic DNA may be used directly for detection or may be amplified enzymatically by using PCR or other amplification technique prior to analysis. RNA or cDNA may also be used in the same ways. Using amplification, characterization of the species and strain of prokaryote present in an individual, may be made by an analysis of the genotype of the prokaryote gene. Deletions and insertions can be detected by a change in size of the amplified product in comparison to the genotype of a reference sequence. Point mutations can be identified by hybridizing amplified DNA to labeled spo/rel polynucleotide sequences. Perfectly matched sequences can be distinguished from mismatched duplexes by RNase digestion or by differences in melting temperatures. DNA sequence differences may also be detected by alterations in the electrophoretic mobility of the DNA fragments in gels, with or without denaturing agents, or by direct DNA sequencing. See, e.g., Myers et al., Science, 230: 1242 (1985). Sequence changes at specific locations also may be revealed by nuclease protection assays, such as RNase and S1 protection or a chemical cleavage method. See, e.g., Cotton et al., Proc. Natl. Acad. Sci., USA, 85: 43974401 (1985).

Cells carrying mutations or polymorphisms in the gene of the invention may also be detected at the DNA level by a variety of techniques, to allow for serotyping, for example. For example, RT-PCR can be used to detect mutations. It is particularly preferred to used RT-PCR in conjunction with automated detection systems, such as, for example, GeneScan. RNA or cDNA may also be used for the same purpose, PCR or RT-PCR. As an example, PCR primers complementary to a nucleic acid encoding spo/rel can be used to identify and analyze mutations. Examples of representative primers are shown below in Table 2 [SEQ ID NO: 7 and 8].

TABLE 2
Primers for amplification of
spo/rel polynucleotides
SEQ ID NO PRIMER SEQUENCE
7         5′-ATGCCAAAAGAAGTGAATTTAACAGGC-3′
8         5′-TCCCTGAATCTGGCCTTCTATACTCAC-3′

The invention further provides these primers with 1, 2, 3 or 4 nucleotides removed from the 5′ and/or the 3′ end. These primers may be used for, among other things, amplifying spo/rel DNA isolated from a sample derived from an individual. The primers may be used to amplify the gene isolated from an infected individual such that the gene may then be subject to various techniques for elucidation of the DNA sequence. In this way, mutations in the DNA sequence may be detected and used to diagnose infection and to serotype and/or classify the infectious agent.

The invention further provides a process for diagnosing, disease, preferably bacterial infections, more preferably infections by Streptococcus pneumoniae, and most preferably otitis media, conjunctivitis, pneumonia, bacteremia, meningitis, sinusitis, pleural empyema and endocarditis, and most particularly meningitis, such as for example infection of cerebrospinal fluid, comprising determining from a sample derived from an individual a increased level of expression of polynucleotide having the sequence of Table 1 [SEQ ID NO: 1]. Increased or decreased expression of spo/rel polynucleotide can be measured using any on of the methods well known in the art for the quantation of polynucleotides, such as, for example, amplification, PCR, RT-PCR, RNase protection, Northern blotting and other hybridization methods.

In addition, a diagnostic assay in accordance with the invention for detecting over-expression of spo/rel protein compared to normal control tissue samples may be used to detect the presence of an infection, for example. Assay techniques that can be used to determine levels of a spo/rel protein, in a sample derived from a host are well-known to those of skill in the art. Such assay methods include radioimmunoassays, competitive-binding assays, Westemn Blot analysis and ELISA assays.

Antibodies

The polypeptides of the invention or variants thereof, or cells expressing them can be used as an immunogen to produce antibodies immunospecific for such polypeptides. “Antibodies” as used herein includes monoclonal and polyclonal antibodies, chimeric, single chain, simianized antibodies and humanized antibodies, as well as Fab fragments, including the products of an Fab immunolglobulin expression library.

Antibodies generated against the polypeptides of the invention can be obtained by administering the polypeptides or epitope-bearing fragments, analogues or cells to an animal, preferably a nonhuman, using routine protocols. For preparation of monoclonal antibodies, any technique known in the art that provides antibodies produced by continuous cell line cultures can be used. Examples include various techniques, such as those in Kohler, G. and Milstein, C., Nature 256: 495-497 (1975); Kozbor et al., Immunology Today 4: 72(1983); Cole et al., pg. 77-96 in MONOCLONAL ANTIBODIES AND CANCER THERAPY, Alan R. Liss, Inc. (1985).

Techniques for the production of single chain antibodies (U.S. Pat. No. 4,946,778) can be adapted to produce single chain antibodies to polypeptides of this invention. Also, transgenic mice, or other organisms such as other mammals, may be used to express humanized antibodies.

Alternatively phage display technology may be utilized to select antibody genes with binding activities towards the polypeptide either from repertoires of PCR amplified v-genes of lymphocytes from humans screened for possessing anti-spo/rel or from naive libraries (McCafferty, J. et al., (1990), Nature 348, 552-554; Marks, J. et al., (1992) Biotechnology 10, 779-783). The affinity of these antibodies can also be improved by chain shuffling (Clackson, T. et al., (1991) Nature 352, 624-628).

If two antigen binding domains are present each domain may be directed against a different epitope—termed ‘bispecific’ antibodies.

The above-described antibodies may be employed to isolate or to identify clones expressing the polypeptides to purify the polypeptides by affinity chromatography.

Thus, among others, antibodies against spo/rel-polypeptide may be employed to treat infections, particularly bacterial infections and especially otitis media, conjunctivitis, pneumonia, bacteremia, meningitis, sinusitis, pleural empyema and endocarditis, and most particularly meningitis, such as for example infection of cerebrospinal fluid.

Polypeptide variants include antigenically, epitopically or immunologically equivalent variants that form a particular aspect of this invention. The term “antigenically equivalent derivative” as used herein encompasses a polypeptide or its equivalent which will be specifically recognized by certain antibodies which, when raised to the protein or polypeptide according to the invention, interfere with the immediate physical interaction between pathogen and mammalian host. The term “immunologically equivalent derivative” as used herein encompasses a peptide or its equivalent which when used in a suitable formulation to raise antibodies in a vertebrate, the antibodies act to interfere with the immediate physical interaction between pathogen and mammalian host.

The polypeptide, such as an antigenically or immunologically equivalent derivative or a fusion protein thereof is used as an antigen to immunize a mouse or other animal such as a rat or chicken. The fusion protein may provide stability to the polypeptide. The antigen may be associated, for example by conjugation, with an immunogenic carrier protein for example bovine serum albumin (BSA) or keyhole limpet haemocyanin (KLH). Alternatively a multiple antigenic peptide comprising multiple copies of the protein or polypeptide, or an antigenically or immunologically equivalent polypeptide thereof may be sufficiently antigenic to improve immunogenicity so as to obviate the use of a carrier.

Preferably, the antibody or variant thereof is modified to make it less immunogenic in the individual. For example, if the individual is human the antibody may most preferably be “humanized”; where the complimentarity determining region(s) of the hybridoma-derived antibody has been transplanted into a human monoclonal antibody, for example as described in Jones, P. et al. (1986), Nature 321, 522-525 or Tempest et al.,(1991) Biotechnology 9, 266-273.

The use of a polynucleotide of the invention in genetic immunization will preferably employ a suitable delivery method such as direct injection of plasmid DNA into muscles (Wolff et al., Hum Mol Genet 1992, 1:363, Manthorpe et al., Hum. Gene Ther. 1963:4, 419), delivery of DNA complexed with specific protein carriers (Wu et al., J Biol Chem. 1989: 264,16985), coprecipitation of DNA with calcium phosphate (Benvenisty & Reshef, PNAS, 1986:83,9551), encapsulation of DNA in various forms of liposomes (Kaneda et al., Science 1989:243,375), particle bombardment (Tang et al., Nature 1992, 356:152, Eisenbraun et al., DNA Cell Biol 1993, 12:791) and in vivo infection using cloned retroviral vectors (Seeger et al., PNAS 1984:81,5849).

Antagonists and agonists—assays and molecules

Polypeptides of the invention may also be used to assess the binding of small molecule substrates and ligands in, for example, cells, cell-free preparations, chemical libraries, and natural product mixtures. These substrates and ligands may be natural substrates and ligands or may be structural or functional mimetics. See, e.g., Coligan et al., Current Protocols in Immunology 1(2): Chapter 5 (1991).

The invention also provides a method of screening compounds to identify those which enhance (agonist) or block (antagonist) the action of spo/rel polypeptides or polynucleotides, particularly those compounds that are bacteriostatic and/or bacteriocidal. The method of screening may involve high-throughput techniques. For example, to screen for agonists or antagoists, a synthetic reaction mix, a cellular compartment, such as a membrane, cell envelope or cell wall, or a preparation of any thereof, comprising spo/rel polypeptide and a labeled substrate or ligand of such polypeptide is incubated in the absence or the presence of a candidate molecule that may be a spo/rel agonist or antagonist. The ability of the candidate molecule to agonize or antagonize the spo/rel polypeptide is reflected in decreased binding of the labeled ligand or decreased production of product from such substrate. Molecules that bind gratuitously, i.e., without inducing the effects of spo/rel polypeptide are most likely to be good antagonists. Molecules that bind well and increase the rate of product production from substrate are agonists. Detection of the rate or level of production of product from substrate may be enhanced by using a reporter system. Reporter systems that may be useful in this regard include but are not limited to colorimetric labeled substrate converted into product, a reporter gene that is responsive to changes in spo/rel polynucleotide or polypeptide activity, and binding assays known in the art.

Another example of an assay for spo/rel antagonists is a competitive assay that combines spo/rel and a potential antagonist with spo/rel-binding molecules, recombinant spo/rel binding molecules, natural substrates or ligands, or substrate or ligand mimetics, under appropriate conditions for a competitive inhibition assay. spo/rel can be labeled, such as by radioactivity or a colorimetric compound, such that the number of spo/rel molecules bound to a binding molecule or converted to product can be determined accurately to assess the effectiveness of the potential antagonist.

Potential antagonists include small organic molecules, peptides, polypeptides and antibodies that bind to a polynucleotide or polypeptide of the invention and thereby inhibit or extinguish its activity. Potential antagonists also may be small organic molecules, a peptide, a polypeptide such as a closely related protein or antibody that binds the same sites on a binding molecule, such as a binding molecule, without inducing spo/rel-induced activities, thereby preventing the action of spo/rel by excluding spo/rel from binding.

Potential antagonists include a small molecule that binds to and occupies the binding site of the polypeptide thereby preventing binding to cellular binding molecules, such that normal biological activity is prevented. Examples of small molecules include but are not limited to small organic molecules, peptides or peptide-like molecules. Other potential antagonists include antisense molecules (see Okano, J. Neurochem. 56: 560 (1991); OLIGODEOXYNUCLEOTIDES AS ANTISENSE INHIBITORS OF GENE EXPRESSION, CRC Press, Boca Raton, Fla. (1988), for a description of these molecules). Preferred potential antagonists include compounds related to and variants of spo/rel.

Each of the DNA sequences provided herein may be used in the discovery and development of antibacterial compounds. The encoded protein, upon expression, can be used as a target for the screening of antibacterial drugs. Additionally, the DNA sequences encoding the amino terminal regions of the encoded protein or Shine-Delgarno or other translation facilitating sequences of the respective mRNA can be used to construct antisense sequences to control the expression of the coding sequence of interest.

The invention also provides the use of the polypeptide, polynucleotide or inhibitor of the invention to interfere with the initial physical interaction between a pathogen and mammalian host responsible for sequelae of infection. In particular the molecules of the invention may be used: in the prevention of adhesion of bacteria, in particular gram positive bacteria, to mammalian extracellular matrix proteins on in-dwelling devices or to extracellular matrix proteins in wounds; to block spo/rel protein-mediated mammalian cell invasion by, for example, initiating phosphorylation of mammalian tyrosine kinases (Rosenshine et al., Infect. Immun. 60:2211 (1992); to block bacterial adhesion between mammalian extracellular matrix proteins and bacterial spo/rel proteins that mediate tissue damage and; to block the normal progression of pathogenesis in infections initiated other than by the implantation of in-dwelling devices or by other surgical techniques.

The antagonists and agonists of the invention may be employed, for instance, to inhibit and treat otitis media, conjunctivitis, pneumonia, bacteremia, meningitis, sinusitis, pleural empyema and endocarditis, and most particularly meningitis, such as for example infection of cerebrospinal fluid.

Vaccines

Another aspect of the invention relates to a method for inducing an immunological response in an individual, particularly a mammal which comprises inoculating the individual with spo/rel, or a fragment or variant thereof, adequate to produce antibody and/or T cell immune response to protect said individual from infection, particularly bacterial infection and most particularly Streptococcus pneumoniae infection. Also provided are methods whereby such immunological response slows bacterial replication. Yet another aspect of the invention relates to a method of inducing immunological response in an individual which comprises delivering to such individual a nucleic acid vector to direct expression of spo/rel, or a fragment or a variant thereof, for expressing spo/rel, or a fragment or a variant thereof in vivo in order to induce an immunological response, such as, to produce antibody and/or T cell immune response, including, for example, cytokine-producing T cells or cytotoxic T cells, to protect said individual from disease, whether that disease is already established within the individual or not. One way of administering the gene is by accelerating it into the desired cells as a coating on particles or otherwise. Such nucleic acid vector may comprise DNA, RNA, a modified nucleic acid, or a DNA/RNA hybrid.

A further aspect of the invention relates to an immunological composition which, when introduced into an individual capable or having induced within it an immunological response, induces an immunological response in such individual to a spo/rel or protein coded therefrom, wherein the composition comprises a recombinant spo/rel or protein coded therefrom comprising DNA which codes for and expresses an antigen of said spo/rel or protein coded therefrom. The immunological response may be used therapeutically or prophylactically and may take the form of antibody immunity or cellular immunity such as that arising from CTL or CD4+ T cells.

A spo/rel polypeptide or a fragment thereof may be fused with co-protein which may not by itself produce antibodies, but is capable of stabilizing the first protein and producing a fused protein which will have immunogenic and protective properties. Thus fused recombinant protein, preferably further comprises an antigenic co-protein, such as lipoprotein D from Hemophilus influenzae, Glutathione-S-transferase (GST) or beta-galactosidase, relatively large co-proteins which solubilize the protein and facilitate production and purification thereof. Moreover, the co-protein may act as an adjuvant in the sense of providing a generalized stimulation of the immune system. The co-protein may be attached to either the amino or carboxy terminus of the first protein.

Provided by this invention are compositions, particularly vaccine compositions, and methods comprising the polypeptides or polynucleotides of the invention and immunostimulatory DNA sequences, such as those described in Sato, Y. et al. Science 273: 352 (1996).

Also, provided by this invention are methods using the described polynucleotide or particular fragments thereof which have been shown to encode non-variable regions of bacterial cell surface proteins in DNA constructs used in such genetic immunization experiments in animal models of infection with Streptococcus pneumoniae will be particularly useful for identifying protein epitopes able to provoke a prophylactic or therapeutic immune response. It is believed that this approach will allow for the subsequent preparation of monoclonal antibodies of particular value from the requisite organ of the animal successfully resisting or clearing infection for the development of prophylactic agents or therapeutic treatments of bacterial infection, particularly Streptococcus pneumoniae infection, in mammals, particularly humans.

The polypeptide may be used as an antigen for vaccination of a host to produce specific antibodies which protect against invasion of bacteria, for example by blocking adherence of bacteria to damaged tissue. Examples of tissue damage include wounds in skin or connective tissue caused, e.g., by mechanical, chemical or thermal damage or by implantation of indwelling devices, or wounds in the mucous membranes, such as the mouth, mammary glands, urethra or vagina.

The invention also includes a vaccine formulation which comprises an immunogenic recombinant protein of the invention together with a suitable carrier. Since the protein may be broken down in the stomach, it is preferably administered parenterally, including, for example, administration that is subcutaneous, intramuscular, intravenous, or intradermal. Formulations suitable for parenteral administration include aqueous and non-aqueous sterile injection solutions which may contain anti-oxidants, buffers, bacteriostats and solutes which render the formulation insotonic with the bodily fluid, preferably the blood, of the individual; and aqueous and non-aqueous sterile suspensions which may include suspending agents or thickening agents. The formulations may be presented in unit-dose or multi-dose containers, for example, sealed ampules and vials and may be stored in a freeze-dried condition requiring only the addition of the sterile liquid carrier immediately prior to use. The vaccine formulation may also include adjuvant systems for enhancing the immunogenicity of the formulation, such as oil-in water systems and other systems known in the art. The dosage will depend on the specific activity of the vaccine and can be readily determined by routine experimentation.

While the invention has been described with reference to certain spo/rel protein, it is to be understood that this covers fragments of the naturally occurring protein and similar proteins with additions, deletions or substitutions which do not substantially affect the immunogenic properties of the recombinant protein.

Compositions, kits and administration

The invention also relates to compositions comprising the polynucleotide or the polypeptides discussed above or their agonists or antagonists. The polypeptides of the invention may be employed in combination with a non-sterile or sterile carrier or carriers for use with cells, tissues or organisms, such as a pharmaceutical carrier suitable for administration to a subject. Such compositions comprise, for instance, a media additive or a therapeutically effective amount of a polypeptide of the invention and a pharmaceutically acceptable carrier or excipient. Such carriers may include, but are not limited to, saline, buffered saline, dextrose, water, glycerol, ethanol and combinations thereof. The formulation should suit the mode of administration. The invention further relates to diagnostic and pharmaceutical packs and kits comprising one or more containers filled with one or more of the ingredients of the aforementioned compositions of the invention.

Polypeptides and other compounds of the invention may be employed alone or in conjunction with other compounds, such as therapeutic compounds.

The pharmaceutical compositions may be administered in any effective, convenient manner including, for instance, administration by topical, oral, anal, vaginal, intravenous, intraperitoneal, intramuscular, subcutaneous, intranasal or intradermal routes among others.

In therapy or as a prophylactic, the active agent may be administered to an individual as an injectable composition, for example as a sterile aqueous dispersion, preferably isotonic.

Alternatively the composition may be formulated for topical application for example in the form of ointments, creams, lotions, eye ointments, eye drops, ear drops, mouthwash, impregnated dressings and sutures and aerosols, and may contain appropriate conventional additives, including, for example, preservatives, solvents to assist drug penetration, and emollients in ointments and creams. Such topical formulations may also contain compatible conventional carriers, for example cream or ointment bases, and ethanol or oleyl alcohol for lotions. Such carriers may constitute from about 1% to about 98% by weight of the formulation; more usually they will constitute up to about 80% by weight of the formulation.

For administration to mammals, and particularly humans, it is expected that the daily dosage level of the active agent will be from 0.01 mg/kg to 10 mg/kg, typically around 1 mg/kg. The physician in any event will determine the actual dosage which will be most suitable for an individual and will vary with the age, weight and response of the particular individual. The above dosages are exemplary of the average case. There can, of course, be individual instances where higher or lower dosage ranges are merited, and such are within the scope of this invention.

In-dwelling devices include surgical implants, prosthetic devices and catheters, i.e., devices that are introduced to the body of an individual and remain in position for an extended time. Such devices include, for example, artificial joints, heart valves, pacemakers, vascular grafts, vascular catheters, cerebrospinal fluid shunts, urinary catheters, continuous ambulatory peritoneal dialysis (CAPD) catheters.

The composition of the invention may be administered by injection to achieve a systemic effect against relevant bacteria shortly before insertion of an in-dwelling device. Treatment may be continued after surgery during the in-body time of the device. In addition, the composition could also be used to broaden perioperative cover for any surgical technique to prevent bacterial wound infections, especially Streptococcus pneumoniae wound infections.

Many orthopaedic surgeons consider that humans with prosthetic joints should be considered for antibiotic prophylaxis before dental treatment that could produce a bacteremia. Late deep infection is a serious complication sometimes leading to loss of the prosthetic joint and is accompanied by significant morbidity and mortality. It may therefore be possible to extend the use of the active agent as a replacement for prophylactic antibiotics in this situation.

In addition to the therapy described above, the compositions of this invention may be used generally as a wound treatment agent to prevent adhesion of bacteria to matrix proteins exposed in wound tissue and for prophylactic use in dental treatment as an alternative to, or in conjunction with, antibiotic prophylaxis.

Alternatively, the composition of the invention may be used to bathe an indwelling device immediately before insertion. The active agent will preferably be present at a concentration of 1 μg/ml to 10 mg/ml for bathing of wounds or indwelling devices.

A vaccine composition is conveniently in injectable form. Conventional adjuvants may be employed to enhance the immune response. A suitable unit dose for vaccination is 0.5-5 microgram/kg of antigen, and such dose is preferably administered 1-3 times and with an interval of 1-3 weeks. With the indicated dose range, no adverse toxicological effects will be observed with the compounds of the invention which would preclude their administration to suitable individuals.

Each reference disclosed herein is incorporated by reference herein in its entirety. Any patent application to which this application claims priority is also incorporated by reference herein in its entirety.

EXAMPLES

The examples below are carried out using standard techniques, which are well known and routine to those of skill in the art, except where otherwise described in detail. The examples are illustrative, but do not limit the invention.

Example 1

Strain Selection, Library Production and Sequencing

The polynucleotide having the DNA sequence given in SEQ ID NO:1 was obtained from a library of clones of chromosomal DNA of Streptococcus pneumoniae in E. coli. The sequencing data from two or more clones containing overlapping Streptococcus pneumoniae DNAs was used to construct the contiguous DNA sequence in SEQ ID NO:1. Libraries may be prepared by routine methods, for example:

Methods 1 and 2 Below.

Total cellular DNA is isolated from Streptococcus pneumoniae 0100993 according to standard procedures and size-fractionated by either of two methods.

Method 1

Total cellular DNA is mechanically sheared by passage through a needle in order to size-fractionate according to standard procedures. DNA fragments of up to 11 kbp in size are rendered blunt by treatment with exonuclease and DNA polymerase, and EcoRI linkers added. Fragments are ligated into the vector Lambda ZapII that has been cut with EcoRI, the library packaged by standard procedures and E. coli infected with the packaged library. The library is amplified by standard procedures.

Method 2

Total cellular DNA is partially hydrolyzed with a one or a combination of restriction enzymes appropriate to generate a series of fragments for cloning into library vectors (e.g., RsaI, PalI, AluI, Bshl235I), and such fragments are size-fractionated according to standard procedures. EcoRI linkers are ligated to the DNA and the fragments then ligated into the vector Lambda ZapII that have been cut with EcoRI, the library packaged by standard procedures, and E. coli infected with the packaged library. The library is amplified by standard procedures.

Example 2

Complementation of an E. coli ppGpp-less Strain

An E. coli mutant lacking both ppGpp synthetases, encoded by the relA and spoT genes, cannot grow in the absence of amino acid supplementation (Xiao et al., 1991). Any expressed gene that encodes a ppGpp synthetase is expected to provide sufficient ppGpp to allow growth on media lacking amino acids (Gentry, D. R., and M. Cashel. 1996, Mol. Microbiol. 19:1373-1384; Mechold, U., M. Cashel, K. Steiner, D. Gentry, and H. Malke. 1996, J. Bacteriol. 178:1401-1411). A Streptococcus pneumoniae spo-rel gene is cloned into pBluescript and transformed into an E. coli DrelA DspoT strain (Xiao, H., M. Kalman, K. Ikehara, S. Zemel, G. Glaser, and M. Cashel. 1991, J. Biol. Chem. 266: 5980-5990). Resulting transformants are screened for their ability to grow on M63 medium supplemented with glucose (0.2%). Complementation is scored after 16 h growth at 37° C.

8 2220 base pairs nucleic acid single linear Genomic DNA not provided 1ATGCCGAAAG AAGTGAATTT AACAGGCGAA GAAGTTGTCG CTTTAACCAA AGAATATTTA 60ACGGAAGAGG ATGTTTATTT TGTCCATAAG GCCTTGGTCT ATGCTGTTGA ATGCCACAGT 120GGTCAATATC GCAAATCAGG CGAGCCTTAT ATCATTCACC CTATCCAAGT GGCAGGTATT 180TTAGCTAAGC TAAAGCTGGA TGCTGTAACA GTAGCTTGTG GATTCTTGCA TGATGTGGTG 240GAAGATACAG ATGCGACCTT GGACGATTTG GAAAGAGAGT TTGGTCCTGA TGTGCGGATG 300ATTGTTGACG GAGTTACCAA GCTTGGCAAG GTCGAGTACA AATCGATCGA AGAGCAATTA 360GCGGAAAATC ATCGCAAGAT GCTCATGGCC ATGTCTGAGG ACATCCGCTT TATTTTGGTC 420AAACTGTCTG ACCGCTTGCA CAATATGCGG ACCCTGAAAC ATCTTCGAAA AGACAAGCAG 480GAGCGTATTT CCAAAGAAAC CATGGAAATT TATGCCCCGC TTGCCCATCG TTTGGGGATT 540TCCAGTGTCA AATGGGAATT AGAAGACTTG TCTTTCCGTT ATCTCAATCC AACGGAGTTT 600TACAAGATTA CCCATATGAT GAAGGAAAAG CGCAGGGAGC GTGAGGCCTT GGTGGATGAG 660GTAGTCACAA AATTAGAGGA GTATACGACA GAACGTCACT TGAAAGGGAA GATTTATGGT 720CGTCCCAAGC ATATTTACTC AATTTTCCGC AAAATGCAGG ACAAGAGAAA ACGGTTTGAG 780GAAATCTATG ATCTGATTGC TATTCGTTGT TTTTTAGATA CCCAAAGTGA TGTTTATGCC 840ATGCTTGGTT ACGTGCATGA ATTTTGGAAA CCGATGCCAG GTCGCTTCAA AGACTATATC 900GCCAACCGCA AGGCCAATGG TTGTCAGTCT ATCCATACGA CTGTTTATGG ACCAAAAGGG 960CCGATTGAAT TCCAGATTCG AACCAAGGAA ATGCACGAGG TGGCTGAGTA CGGGGTTGCG 1020GCTCACTGGG CTTATAAGAA AGGTATCAAG GGGCTAGTTA ACAGCAAGGA ATCAGCTATT 1080GGAATGAACT GGATCAAGGA GATGATAGAG CTCCAAGACC AGGCTGATGA TGCTAAGGAA 1140TTTGTGGACT CTGTTAAGGA AAACTATCTG GCTGAGGAGA TTTACGTTTT TACCCCAGAT 1200GGAGCTGTCC GTTCTCTTCC CAAAGATTCA GGACCGATTG ATTTTGCCTA CGAAATCCAT 1260ACCAAGGTCG GTGAAAAAGC AACTGGTGCC AAGGTCAATG GCCGCATGGT TCCACTGACA 1320ACCAAGTTAA AGACAGGGGA TCAGGTTGAA ATTATCGCCA ACCCGAACTC CTTTGGACCT 1380AGCCGTGACT GGCTCAATAT GGTCAAGACT AGCAAGGCGC GCAATAAGAT TCGCCAGTTC 1440TTTAAAAACC AAGATAAGGA ATTGTCTGTC AACAAGGGTC GTGAGATGCT GATGGCTCAG 1500TTCCAAGAAA ATGGCTATGT GGCAAATAAA TTTATGGACA AGCGCCACAT GGATCAAGTT 1560CTGCAAAAGA CCAGTTACAA GACAGAAGAC TCCCTCTTTG CGGCCATTGG TTTTGGGGAA 1620ATCGGTGCGA TTACCGTCTT TAACCGTCTG ACTGAAAAAG AACGCCGTGA GGAAGAGCGT 1680GCCAAGGCCA AGGCTGAGGC AGAGGAGCTT GTCAAAGGTG GCGAGGTCAA GGTTGAAAAT 1740AAGAAACTCT CCAAGGTCAA GCATGAGGGG GGAGTGGTTA TTGAAGGTGC TTCTGGTCTC 1800CTAGTGCGGA TTGCTAAGTG TTGTAACCCC GTGCCTGGTG ACGATATTGT TGGCTACATT 1860ACCAAGGGTC GTGGTGTGGC TATTCACCGT GTGGACTGTA TGAACCTGCG TGCCCAAGAA 1920AACTACGAGC AACGTCTCCT TGATGTGGAA TGGGAAGACC AGTACTCTAG CTCAAATAAG 1980GAGTATATGG CCCATATCGA TATCTACGGT CTCAACCGTA CAGGACTGTT GAACGATGTA 2040CTGCAAGTTC TTTCAAATAC AACCAAGAAT ATTTCAACGG TCAATGCCCA ACCAACCAAG 2100GATATGAAGT TTGCTAATAT CCATGTGTCC TTCGGTATTG CCAACCTCTC TACACTGACC 2160ACGGTTGTCG ATAAAATTAA GAGTGTGCCA GAAGTTTACT CTGTCAAACG GACCAACGGC 2220 740 amino acids amino acid single linear protein not provided 2Met Pro Lys Glu Val Asn Leu Thr Gly Glu Glu Val Val Ala Leu Thr 1 5 10 15Lys Glu Tyr Leu Thr Glu Glu Asp Val Tyr Phe Val His Lys Ala Leu 20 25 30Val Tyr Ala Val Glu Cys His Ser Gly Gln Tyr Arg Lys Ser Gly Glu 35 40 45Pro Tyr Ile Ile His Pro Ile Gln Val Ala Gly Ile Leu Ala Lys Leu 50 55 60Lys Leu Asp Ala Val Thr Val Ala Cys Gly Phe Leu His Asp Val Val65 70 75 80Glu Asp Thr Asp Ala Thr Leu Asp Asp Leu Glu Arg Glu Phe Gly Pro 85 90 95Asp Val Arg Met Ile Val Asp Gly Val Thr Lys Leu Gly Lys Val Glu 100 105 110Tyr Lys Ser Ile Glu Glu Gln Leu Ala Glu Asn His Arg Lys Met Leu 115 120 125Met Ala Met Ser Glu Asp Ile Arg Phe Ile Leu Val Lys Leu Ser Asp 130 135 140Arg Leu His Asn Met Arg Thr Leu Lys His Leu Arg Lys Asp Lys Gln145 150 155 160Glu Arg Ile Ser Lys Glu Thr Met Glu Ile Tyr Ala Pro Leu Ala His 165 170 175Arg Leu Gly Ile Ser Ser Val Lys Trp Glu Leu Glu Asp Leu Ser Phe 180 185 190Arg Tyr Leu Asn Pro Thr Glu Phe Tyr Lys Ile Thr His Met Met Lys 195 200 205Glu Lys Arg Arg Glu Arg Glu Ala Leu Val Asp Glu Val Val Thr Lys 210 215 220Leu Glu Glu Tyr Thr Thr Glu Arg His Leu Lys Gly Lys Ile Tyr Gly225 230 235 240Arg Pro Lys His Ile Tyr Ser Ile Phe Arg Lys Met Gln Asp Lys Arg 245 250 255Lys Arg Phe Glu Glu Ile Tyr Asp Leu Ile Ala Ile Arg Cys Phe Leu 260 265 270Asp Thr Gln Ser Asp Val Tyr Ala Met Leu Gly Tyr Val His Glu Phe 275 280 285Trp Lys Pro Met Pro Gly Arg Phe Lys Asp Tyr Ile Ala Asn Arg Lys 290 295 300Ala Asn Gly Cys Gln Ser Ile His Thr Thr Val Tyr Gly Pro Lys Gly305 310 315 320Pro Ile Glu Phe Gln Ile Arg Thr Lys Glu Met His Glu Val Ala Glu 325 330 335Tyr Gly Val Ala Ala His Trp Ala Tyr Lys Lys Gly Ile Lys Gly Leu 340 345 350Val Asn Ser Lys Glu Ser Ala Ile Gly Met Asn Trp Ile Lys Glu Met 355 360 365Ile Glu Leu Gln Asp Gln Ala Asp Asp Ala Lys Glu Phe Val Asp Ser 370 375 380Val Lys Glu Asn Tyr Leu Ala Glu Glu Ile Tyr Val Phe Thr Pro Asp385 390 395 400Gly Ala Val Arg Ser Leu Pro Lys Asp Ser Gly Pro Ile Asp Phe Ala 405 410 415Tyr Glu Ile His Thr Lys Val Gly Glu Lys Ala Thr Gly Ala Lys Val 420 425 430Asn Gly Arg Met Val Pro Leu Thr Thr Lys Leu Lys Thr Gly Asp Gln 435 440 445Val Glu Ile Ile Ala Asn Pro Asn Ser Phe Gly Pro Ser Arg Asp Trp 450 455 460Leu Asn Met Val Lys Thr Ser Lys Ala Arg Asn Lys Ile Arg Gln Phe465 470 475 480Phe Lys Asn Gln Asp Lys Glu Leu Ser Val Asn Lys Gly Arg Glu Met 485 490 495Leu Met Ala Gln Phe Gln Glu Asn Gly Tyr Val Ala Asn Lys Phe Met 500 505 510Asp Lys Arg His Met Asp Gln Val Leu Gln Lys Thr Ser Tyr Lys Thr 515 520 525Glu Asp Ser Leu Phe Ala Ala Ile Gly Phe Gly Glu Ile Gly Ala Ile 530 535 540Thr Val Phe Asn Arg Leu Thr Glu Lys Glu Arg Arg Glu Glu Glu Arg545 550 555 560Ala Lys Ala Lys Ala Glu Ala Glu Glu Leu Val Lys Gly Gly Glu Val 565 570 575Lys Val Glu Asn Lys Lys Leu Ser Lys Val Lys His Glu Gly Gly Val 580 585 590Val Ile Glu Gly Ala Ser Gly Leu Leu Val Arg Ile Ala Lys Cys Cys 595 600 605Asn Pro Val Pro Gly Asp Asp Ile Val Gly Tyr Ile Thr Lys Gly Arg 610 615 620Gly Val Ala Ile His Arg Val Asp Cys Met Asn Leu Arg Ala Gln Glu625 630 635 640Asn Tyr Glu Gln Arg Leu Leu Asp Val Glu Trp Glu Asp Gln Tyr Ser 645 650 655Ser Ser Asn Lys Glu Tyr Met Ala His Ile Asp Ile Tyr Gly Leu Asn 660 665 670Arg Thr Gly Leu Leu Asn Asp Val Leu Gln Val Leu Ser Asn Thr Thr 675 680 685Lys Asn Ile Ser Thr Val Asn Ala Gln Pro Thr Lys Asp Met Lys Phe 690 695 700Ala Asn Ile His Val Ser Phe Gly Ile Ala Asn Leu Ser Thr Leu Thr705 710 715 720Thr Val Val Asp Lys Ile Lys Ser Val Pro Glu Val Tyr Ser Val Lys 725 730 735Arg Thr Asn Gly 740 857 base pairs nucleic acid single linear Genomic DNA not provided 3ATACAGATGC GACCTTGGAC GATTTGGAAA GAGAGTTTGG TCCTGATGTG CGGATGATTG 60TTGACGGAGT TACCAAGCTT GGCAAGGTCG AGTACAAATC GATCGAAGAG CAATTAGCGG 120AAAATCATCG CAAGATGCTC ATGGCCATGT CTGAGGACAT CCGCTTTATT TTGGTCAAAC 180TGTCTGACCG CTTGCACAAT ATGCGGACCC TGAAACATCT TCGAAAAGAC AAGCAGGAGC 240GTATTTCCAA AGAAACCATG GAAATTTATG CCCCGCTTGC CCATCGTTTG GGGATTTCCA 300GTGTCAAATG GGAATTAGAA GACTTGTCTT TCCGTTATCT CAATCCAACG GAGTTTTACA 360AGATTACCCA TATGATGAAG GAAAAGCGCA GGGAGCGTGA GGCCTTGGTG GATGAGGTAG 420TCACAAAATT AGAGGAGTAT ACGACAGAAC GTCACTTGAA AGGGAAGATT TATGGTCGTC 480CCAAGCATAT TTACTCAATT TTCCGCAAAA TGCAGGACAA GAGAAAACGG TTTGAGGAAA 540TCTATGATCT GATTGCTATT CGTTGTTTTT TAGATACCCA AAGTGATGTT TATGCCATGC 600TTGGTTACGT GCATGAATTT TGGAAACCGA TGCCAGGTCG CTTCAAAGAC TATATCGCCA 660ACCGCAAGGC CAATGGTTGT CAGTCTATCC ATACGACTGT TTATGGACCA AAAGGGCCGA 720TTGAATTCCA GATTCGAACC AAGGAAATGC ACGAGGTGGC TGAGTACGGG GTTGCGGCTC 780ACTGGGCTTA TAAGAAAGGT ATCAAGGGGC TAGTTAACAG CAAGGAATCA GCTATTGGAA 840TGAACTGGAT CAAGGAG 857 286 amino acids amino acid single linear protein not provided 4Thr Asp Ala Thr Leu Asp Asp Leu Glu Arg Glu Phe Gly Pro Asp Val 1 5 10 15Arg Met Ile Val Asp Gly Val Thr Lys Leu Gly Lys Val Glu Tyr Lys 20 25 30Ser Ile Glu Glu Gln Leu Ala Glu Asn His Arg Lys Met Leu Met Ala 35 40 45Met Ser Glu Asp Ile Arg Phe Ile Leu Val Lys Leu Ser Asp Arg Leu 50 55 60His Asn Met Arg Thr Leu Lys His Leu Arg Lys Asp Lys Gln Glu Arg65 70 75 80Ile Ser Lys Glu Thr Met Glu Ile Tyr Ala Pro Leu Ala His Arg Leu 85 90 95Gly Ile Ser Ser Val Lys Trp Glu Leu Glu Asp Leu Ser Phe Arg Tyr 100 105 110Leu Asn Pro Thr Glu Phe Tyr Lys Ile Thr His Met Met Lys Glu Lys 115 120 125Arg Arg Glu Arg Glu Ala Leu Val Asp Glu Val Val Thr Lys Leu Glu 130 135 140Glu Tyr Thr Thr Glu Arg His Leu Lys Gly Lys Ile Tyr Gly Arg Pro145 150 155 160Lys His Ile Tyr Ser Ile Phe Arg Lys Met Gln Asp Lys Arg Lys Arg 165 170 175Phe Glu Glu Ile Tyr Asp Leu Ile Ala Ile Arg Cys Phe Leu Asp Thr 180 185 190Gln Ser Asp Val Tyr Ala Met Leu Gly Tyr Val His Glu Phe Trp Lys 195 200 205Pro Met Pro Gly Arg Phe Lys Asp Tyr Ile Ala Asn Arg Lys Ala Asn 210 215 220Gly Cys Gln Ser Ile His Thr Thr Val Tyr Gly Pro Lys Gly Pro Ile225 230 235 240Glu Phe Gln Ile Arg Thr Lys Glu Met His Glu Val Ala Glu Tyr Gly 245 250 255Val Ala Ala His Trp Ala Tyr Lys Lys Gly Ile Lys Gly Leu Val Asn 260 265 270Ser Lys Glu Ser Ala Ile Gly Met Asn Trp Ile Lys Glu Met 275 280 285 1113 base pairs nucleic acid single linear Genomic DNA not provided 5CTCCAAGACC AGGCTGATGA TGCTAAGGAA TTTGTGGACT CTGTTAAGGA AAACTATCTG 60GCTGAGGAGA TTTACGTTTT TACCCCAGAT GGAGCTGTCC GTTCTCTTCC CAAAGATTCA 120GGACCGATTG ATTTTGCCTA CGAAATCCAT ACCAAGGTCG GTGAAAAAGC AACTGGTGCC 180AAGGTCAATG GCCGCATGGT TCCACTGACA ACCAAGTTAA AGACAGGGGA TCAGGTTGAA 240ATTATCGCCA ACCCGAACTC CTTTGGACCT AGCCGTGACT GGCTCAATAT GGTCAAGACT 300AGCAAGGCGC GCAATAAGAT TCGCCAGTTC TTTAAAAACC AAGATAAGGA ATTGTCTGTC 360AACAAGGGTC GTGAGATGCT GATGGCTCAG TTCCAAGAAA ATGGCTATGT GGCAAATAAA 420TTTATGGACA AGCGCCACAT GGATCAAGTT CTGCAAAAGA CCAGTTACAA GACAGAAGAC 480TCCCTCTTTG CGGCCATTGG TTTTGGGGAA ATCGGTGCGA TTACCGTCTT TAACCGTCTG 540ACTGAAAAAG AACGCCGTGA GGAAGAGCGT GCCAAGGCCA AGGCTGAGGC AGAGGAGCTT 600GTCAAAGGTG GCGAGGTCAA GGTTGAAAAT AAGAAACTCT CCAAGGTCAA GCATGAGGGG 660GGAGTGGTTA TTGAAGGTGC TTCTGGTCTC CTAGTGCGGA TTGCTAAGTG TTGTAACCCC 720GTGCCTGGTG ACGATATTGT TGGCTACATT ACCAAGGGTC GTGGTGTGGC TATTCACCGT 780GTGGACTGTA TGAACCTGCG TGCCCAAGAA AACTACGAGC AACGTCTCCT TGATGTGGAA 840TGGGAAGACC AGTACTCTAG CTCAAATAAG GAGTATATGG CCCATATCGA TATCTACGGT 900CTCAACCGTA CAGGACTGTT GAACGATGTA CTGCAAGTTC TTTCAAATAC AACCAAGAAT 960ATTTCAACGG TCAATGCCCA ACCAACCAAG GATATGAAGT TTGCTAATAT CCATGTGTCC 1020TTCGGTATTG CCAACCTCTC TACACTGACC ACGGTTGTCG ATAAAATTAA GAGTGTGCCA 1080GAAGTTTACT CTGTCAAACG GACCAACGGC TAG 1113 364 amino acids amino acid single linear protein not provided 6Asp Ala Lys Glu Phe Val Asp Ser Val Lys Glu Asn Tyr Leu Ala Glu 1 5 10 15Glu Ile Tyr Val Phe Thr Pro Asp Gly Ala Val Arg Ser Leu Pro Lys 20 25 30Asp Ser Gly Pro Ile Asp Phe Ala Tyr Glu Ile His Thr Lys Val Gly 35 40 45Glu Lys Ala Thr Gly Ala Lys Val Asn Gly Arg Met Val Pro Leu Thr 50 55 60Thr Lys Leu Lys Thr Gly Asp Gln Val Glu Ile Ile Ala Asn Pro Asn65 70 75 80Ser Phe Gly Pro Ser Arg Asp Trp Leu Asn Met Val Lys Thr Ser Lys 85 90 95Ala Arg Asn Lys Ile Arg Gln Phe Phe Lys Asn Gln Asp Lys Glu Leu 100 105 110Ser Val Asn Lys Gly Arg Glu Met Leu Met Ala Gln Phe Gln Glu Asn 115 120 125Gly Tyr Val Ala Asn Lys Phe Met Asp Lys Arg His Met Asp Gln Val 130 135 140Leu Gln Lys Thr Ser Tyr Lys Thr Glu Asp Ser Leu Phe Ala Ala Ile145 150 155 160Gly Phe Gly Glu Ile Gly Ala Ile Thr Val Phe Asn Arg Leu Thr Glu 165 170 175Lys Glu Arg Arg Glu Glu Glu Arg Ala Lys Ala Lys Ala Glu Ala Glu 180 185 190Glu Leu Val Lys Gly Gly Glu Val Lys Val Glu Asn Lys Lys Leu Ser 195 200 205Lys Val Lys His Glu Gly Gly Val Val Ile Glu Gly Ala Ser Gly Leu 210 215 220Leu Val Arg Ile Ala Lys Cys Cys Asn Pro Val Pro Gly Asp Asp Ile225 230 235 240Val Gly Tyr Ile Thr Lys Gly Arg Gly Val Ala Ile His Arg Val Asp 245 250 255Cys Met Asn Leu Arg Ala Gln Glu Asn Tyr Glu Gln Arg Leu Leu Asp 260 265 270Val Glu Trp Glu Asp Gln Tyr Ser Ser Ser Asn Lys Glu Tyr Met Ala 275 280 285His Ile Asp Ile Tyr Gly Leu Asn Arg Thr Gly Leu Leu Asn Asp Val 290 295 300Leu Gln Val Leu Ser Asn Thr Thr Lys Asn Ile Ser Thr Val Asn Ala305 310 315 320Gln Pro Thr Lys Asp Met Lys Phe Ala Asn Ile His Val Ser Phe Gly 325 330 335Ile Ala Asn Leu Ser Thr Leu Thr Thr Val Val Asp Lys Ile Lys Ser 340 345 350Val Pro Glu Val Tyr Ser Val Lys Arg Thr Asn Gly 355 360 27 base pairs nucleic acid single linear Genomic DNA not provided 7ATGCCAAAAG AAGTGAATTT AACAGGC 27 27 base pairs nucleic acid single linear Genomic DNA not provided 8TCCCTGAATC TGGCCTTCTA TACTCAC 27

Claims

1. An isolated polynucleotide segment comprising: a nucleic acid sequence, or the full complement of the entire length of the nucleic acid sequence, wherein the nucleic acid sequence is at least 95% identical to SEQ ID NO:1 and wherein the nucleic acid sequence is not genomic DNA and wherein the nucleic acid sequence detects Streptococcus pneumoniae by hybridization.

2. A vector comprising the isolated polynucleotide segment of claim 1.

3. An isolated host cell comprising the vector of claim 2.

4. The isolated polynucleotide segment of claim 1, wherein the nucleic acid sequence is at least 97% identical to SEQ ID NO:1.

5. The isolated polynucleotide segment of claim 1, wherein the nuclcic acid sequence is at least 98% identical to SEQ ID NO:1.

6. The isolated polynucleotide segment of claim 1, wherein the nucleic acid sequence is at least 99% identical to SEQ ID NO:1.

7. A vector comprising the isolated polynucleotide segment of claim 6.

8. An isolated host cell comprising the vector of claim 7.

9. An isolated polynucleotide segment comprising a nucleic acid sequence or the full complement of the entire length of the nucleic acid sequence, wherein the nucleic acid sequence hybridizes to the full complement of SEQ ID NO:1, wherein the hybridization conditions comprise incubation at 42° C. in a solution comprising: 50% formamide, 5×SSC (150 mM NaCl, 15 mM trisodium citrate), 50 mM sodium phosphate (pH7.6), 5×Denhardt's solution, 10% dextran sulfate, and 20 micrograms/ml denatured, sheared salmon sperm DNA, followed by washing in 0.1×SSC at 65° C.; wherein the nucleic acid sequence is at least 95% identical to SEQ ID NO:1; wherein the nucleic acid sequence is not genomic DNA and wherein the nucleic acid sequence detects Streptococcus pneumoniae by hybridization.

10. A vector comprising the isolated polynucleotide segment of claim 9.

11. An isolated host cell comprising the vector of claim 10.

12. The isolated polynuclcotide segment of claim 9, wherein the nucleic acid sequence is at least 97% identical to SEQ ID NO:1.

13. A vector comprising the isolated polynucleotide segment of claim 12.

14. An isolated host cell comprising the vector of claim 13.

15. An isolated polynucleotide segment comprising SEQ ID NO:1.

16. A vector comprising the isolated polynucleotide segment of claim 15.

17. An isolated host cell comprising the vector of claim 16.

18. A process for producing a polypeptide comprising culturing the host cell of claim 17 under conditions sufficient for production of the polypeptide, wherein the polypeptide comprises SEQ ID NO:2.