Reviewed, UniProtKB/Swiss-Prot Q6GAW1 (LEP_STAAS)

Names and origin

Protein names

Recommended name:
    Signal peptidase IB
      Short name=SPase IB
    EC=3.4.21.89
Alternative name(s):
    Leader peptidase IB

Gene names

Name:	spsB
Ordered Locus Names:	SAS0835

Organism

Staphylococcus aureus (strain MSSA476) [Complete proteome] [HAMAP]

Taxonomic identifier

282459 [NCBI]

Taxonomic lineage

Bacteria › Firmicutes › Bacillales › Staphylococcus

Protein attributes

Sequence length	191 AA.
Sequence status	Complete.
Protein existence	Inferred from homology.

General annotation (Comments)

Function	Essential for cell viability By similarity.
Catalytic activity	Cleavage of hydrophobic, N-terminal signal or leader sequences from secreted and periplasmic proteins.
Subcellular location	Cell membrane; Single-pass type II membrane protein Potential.
Sequence similarities	Belongs to the peptidase S26 family.

Ontologies

Keywords
Cellular component	Cell membrane Membrane
Domain	Transmembrane
Molecular function	Hydrolase Protease
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	proteolysis Inferred from electronic annotation. Source: InterPro
Cellular component	integral to membrane Inferred from electronic annotation. Source: UniProtKB-SubCell plasma membrane Inferred from electronic annotation. Source: UniProtKB-KW
Molecular function	serine-type peptidase activity Inferred from electronic annotation. Source: InterPro
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 191	191	Signal peptidase IB		PRO_0000109530
Regions
	Topological domain	1 – 7	7	Cytoplasmic Potential
	Transmembrane	8 – 28	21	Potential
	Topological domain	29 – 191	163	Extracellular Potential
Sites
	Active site	36	1	By similarity
	Active site	77	1	By similarity

Sequences

	Sequence		Length	Mass (Da)
	Q6GAW1-1 [UniParc]. Last modified July 19, 2004. Version 1. Checksum: 1C6BF5BB423706C0	FASTA	191	21,692
	10 20 30 40 50 60 MKKELLEWII SIAVAFVILF IVGKFIVTPY TIKGESMDPT LKDGERVAVN IIGYKTGGLE 70 80 90 100 110 120 KGNVVVFHAN KNDDYVKRVI GVPGDKVEYK NDTLYVNGKK QDEPYLNYNL KHKQGDYITG 130 140 150 160 170 180 TFQVKDLPNA NPKSNVIPKG KYLVLGDNRE VSKDSRAFGL IDEDQIVGKV SFRFWPFSEF 190 KHNFNPENTK N

References

[1]

"Complete genomes of two clinical Staphylococcus aureus strains: evidence for the rapid evolution of virulence and drug resistance." 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. Proc. Natl. Acad. Sci. U.S.A. 101:9786-9791(2004) [PubMed: 15213324] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases
EMBL GenBank DDBJ	BX571857 Genomic DNA. Translation: CAG42610.1.
RefSeq	YP_042962.1.
3D structure databases
SMR	Q6GAW1. Positions 24-181.
ModBase	Search...
Protein-protein interaction databases
STRING	Q6GAW1.
Genome annotation databases
GeneID	2862780.
GenomeReviews	Gene locus SAS0835 in contig BX571857_GR.
KEGG	sas:SAS0835.
Organism-specific databases
CMR	Search...
Phylogenomic databases
eggNOG	COG0681.
HOGENOM	HBG596607.
OMA	PLAETHI.
Enzyme and pathway databases
BioCyc	SAUR282459:SAS0835-MONOMER.
Family and domain databases
InterPro	IPR000223. Pept_S26A_signal_pept_1. IPR019758. Pept_S26A_signal_pept_1_CS. IPR019757. Pept_S26A_signal_pept_1_Lys-AS. IPR019756. Pept_S26A_signal_pept_1_Ser-AS. IPR019759. Peptidase_S24_S26_cons-reg. IPR015927. Peptidase_S24_S26A/B/C. IPR011056. Peptidase_S24_S26A/B/C_b-rbn. [Graphical view]
Gene3D	G3DSA:2.10.109.10. Pept_S24_S26_C. 1 hit.
Pfam	PF00717. Peptidase_S24. 1 hit. [Graphical view]
PRINTS	PR00727. LEADERPTASE.
TIGRFAMs	TIGR02227. sigpep_I_bact. 1 hit.
PROSITE	PS00501. SPASE_I_1. 1 hit. PS00760. SPASE_I_2. 1 hit. PS00761. SPASE_I_3. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

LEP_STAAS

Accession

Primary (citable) accession number: Q6GAW1

Entry history

Integrated into UniProtKB/Swiss-Prot:	December 20, 2005
Last sequence update:	July 19, 2004
Last modified:	February 9, 2010
This is version 44 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HAMAP (High-quality Automated and Manual Annotation of microbial Proteomes)