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UniProtKB/Swiss-Prot entry Q6GI34


[Entry info] [Name and origin] [References] [Comments] [Cross-references] [Keywords] [Features] [Sequence] [Tools]

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Entry information
Entry name SSPA_STAAR
Primary accession number Q6GI34
Secondary accession numbers None
Integrated into Swiss-Prot on June 7, 2005
Sequence was last modified on July 19, 2004 (Sequence version 1)
Annotations were last modified on    November 4, 2008 (Entry version 31)
Name and origin of the protein
Protein name Glutamyl endopeptidase [Precursor]
Synonyms EC 3.4.21.19
Staphylococcal serine proteinase
V8 protease
V8 proteinase
Endoproteinase Glu-C
Gene name
Name: sspA
OrderedLocusNames: SAR1022
From
Staphylococcus aureus (strain MRSA252) [TaxID: 282458] [HAMAP proteome]
Taxonomy Bacteria; Firmicutes; Bacillales; Staphylococcus.
Protein existence 3: Inferred from homology;
References
[1]
NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
DOI=10.1073/pnas.0402521101; PubMed=15213324 [NCBI, ExPASy, EBI, Israel, Japan]
Holden M.T.G., Feil E.J., Lindsay J.A., Peacock S.J., Day N.P.J., Enright M.C., Foster T.J., Moore C.E., Hurst L., Atkin R., Barron A., Bason N., Bentley S.D., Chillingworth C., Chillingworth T., Churcher C., Clark L., Corton C., Cronin A., Doggett J., Dowd L., Feltwell T., Hance Z., Harris B., Hauser H., Holroyd S., Jagels K., James K.D., Lennard N., Line A., Mayes R., Moule S., Mungall K., Ormond D., Quail M.A., Rabbinowitsch E., Rutherford K.M., Sanders M., Sharp S., Simmonds M., Stevens K., Whitehead S., Barrell B.G., Spratt B.G., Parkhill J.;
"Complete genomes of two clinical Staphylococcus aureus strains: evidence for the rapid evolution of virulence and drug resistance.";
Proc. Natl. Acad. Sci. U.S.A. 101:9786-9791(2004).
Comments
  • FUNCTION: Preferentially cleaves peptide bonds on the carboxyl-terminal side of aspartate and glutamate. Along with other extracellular proteases it is involved in colonization and infection of human tissues. Required for proteolytic maturation of thiol protease sspB and inactivation of sspC, an inhibitor of sspB. It is the most important protease for degradation of fibronectin-binding protein (FnBP) and surface protein A, which are involved in adherence to host cells. May also protect bacteria against host defense mechanism by cleaving the immunoglobulin classes IgG, IgA and IgM. May be involved in the stability of secreted lipases (By similarity).
  • CATALYTIC ACTIVITY: Preferential cleavage: Glu-|-Xaa, Asp-|-Xaa.
  • SUBCELLULAR LOCATION: Secreted (By similarity).
  • PTM: Proteolytically cleaved by aureolysin (aur). This cleavage leads to the activation of sspA (By similarity).
  • MISCELLANEOUS: The cascade of activation of extracellular proteases proceeds from the metalloprotease aureolysin (aur), through sspA to sspB (By similarity).
  • SIMILARITY: Belongs to the peptidase S1B family [view classification].
Copyright
Copyrighted by the UniProt Consortium, see http://www.uniprot.org/terms. Distributed under the Creative Commons Attribution-NoDerivs License.
Cross-references
Sequence databases
EMBL
BX571856; CAG40026.1; -; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
RefSeq YP_040438.1; -.
3D structure databases
SMR Q6GI34; 69-284.
ModBase Q6GI34.
Enzyme and pathway databases
BioCyc SAUR282458:SAR1022-MON; -.
Ontologies
GO
GO:0005576; Cellular component: extracellular region (inferred from electronic annotation from UniProtKB-KW).
GO:0009405; Biological process: pathogenesis (inferred from electronic annotation from UniProtKB-KW).
QuickGo view.
Family and domain databases
InterPro IPR000126; Pept_S1B_AS.
IPR001254; Peptidase_S1_S6.
IPR008256; Peptidase_S1B.
IPR008353; Peptidase_S1B_tx.
Graphical view of domain structure.
Pfam PF00089; Trypsin; 1.
Pfam graphical view of domain structure.
PRINTS PR01774; EXFOLTOXIN.
PR00839; V8PROTEASE.
SMART SM00020; Tryp_SPc; 1.
SMART graphical view of domain structure.
PROSITE PS00672; V8_HIS; 1.
PS00673; V8_SER; 1.
BLOCKS Q6GI34.
ProtoNet Q6GI34.
Genome annotation databases
GeneID 2859506; -.
GenomeReviews BX571856_GR; SAR1022.
KEGG sar:SAR1022; -.
Phylogenomic databases
HOGENOM Q6GI34; -.
Genome annotation databases
CMR Q6GI34; SAR1022.
Other
UniRef View cluster of proteins with at least 50% / 90% / 100% identity.
Keywords
Complete proteome; Hydrolase; Protease; Repeat; Secreted; Serine protease; Signal; Virulence; Zymogen.
Features
SEVIEWER logo Feature table viewer FT aligner logo Feature aligner
KeyFrom   To Length Description FTId
SIGNAL   1    29  29     Potential. 
PROPEP   30    68  39     By similarity. PRO_0000026890
CHAIN   69   357  289     Glutamyl endopeptidase. PRO_0000026891
REPEAT   289   291  3     1. 
REPEAT   292   294  3     2. 
REPEAT   295   297  3     3. 
REPEAT   298   300  3     4. 
REPEAT   301   303  3     5. 
REPEAT   304   306  3     6. 
REPEAT   307   309  3     7. 
REPEAT   310   312  3     8. 
REPEAT   313   315  3     9. 
REPEAT   316   318  3     10. 
REPEAT   319   321  3     11. 
REPEAT   322   324  3     12. 
REPEAT   325   327  3     13. 
REPEAT   328   330  3     14. 
REPEAT   331   333  3     15. 
REPEAT   337   339  3     16. 
REPEAT   340   342  3     17. 
REPEAT   343   345  3     18. 
REGION   289   345  57     18 X 3 AA repeats of P-[DN]-N. 
ACT_SITE   119   119        Charge relay system (By similarity). 
ACT_SITE   161   161        Charge relay system (By similarity). 
ACT_SITE   237   237        Charge relay system (By similarity). 
SITE   68    69  2     Cleavage; by aureolysin (By similarity). 
Sequence information
Length: 357 AA [This is the length of the unprocessed precursor] Molecular weight: 38639 Da [This is the MW of the unprocessed precursor] CRC64: 0AB1A85D162A0395 [This is a checksum on the sequence]
        10         20         30         40         50         60 
MKGKFLKVSS LFVATLTTAT LVSSPAANAL SSKAMDNHPQ QTQTDKQQTP KIQKGGNLKP 

        70         80         90        100        110        120 
LEQRERANVI LPNNDRHQIT DTTNGHYAPV TYIQVEAPTG TFIASGVVVG KDTLLTNKHI 

       130        140        150        160        170        180 
VDATHGDPHA LKAFASAINQ DNYPNGGFTA EQITKYSGEG DLAIVKFSPN EQNKHIGEVV 

       190        200        210        220        230        240 
KPATMSNNAE TQVNQNITVT GYPGDKPVAT MWESKGKITY LKGEAMQYDL STTGGNSGSP 

       250        260        270        280        290        300 
VFNEKNEVIG IHWGGVPNQF NGAVFINENV RNFLKQNIED INFANDDHPN NPDNPDNPNN 

       310        320        330        340        350 
PDNPNNPDNP NNPDNPDNPN NPDNPNNPDN PNNPDQPNNP NNPDNGDNNN SDNPDAA 

Q6GI34 in FASTA format

View entry in original UniProtKB/Swiss-Prot format
View entry in raw text format (no links)
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