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A3CPX9 (LUXS_STRSV) Reviewed, UniProtKB/Swiss-Prot

Last modified April 16, 2014. Version 49. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (1) | Third-party data text xml rdf/xml gff fasta
to top of pageNames·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order

Names and origin

Protein namesRecommended name:
S-ribosylhomocysteine lyase

EC=4.4.1.21
Alternative name(s):
AI-2 synthesis protein
Autoinducer-2 production protein LuxS
Gene names
Name:luxS
Ordered Locus Names:SSA_1853
OrganismStreptococcus sanguinis (strain SK36) [Complete proteome] [HAMAP]
Taxonomic identifier388919 [NCBI]
Taxonomic lineageBacteriaFirmicutesBacilliLactobacillalesStreptococcaceaeStreptococcus

Protein attributes

Sequence length160 AA.
Sequence statusComplete.
Protein existenceInferred from homology

General annotation (Comments)

Function

Involved in the synthesis of autoinducer 2 (AI-2) which is secreted by bacteria and is used to communicate both the cell density and the metabolic potential of the environment. The regulation of gene expression in response to changes in cell density is called quorum sensing. Catalyzes the transformation of S-ribosylhomocysteine (RHC) to homocysteine (HC) and 4,5-dihydroxy-2,3-pentadione (DPD) By similarity. HAMAP-Rule MF_00091

Catalytic activity

S-(5-deoxy-D-ribos-5-yl)-L-homocysteine = L-homocysteine + (4S)-4,5-dihydroxypentan-2,3-dione. HAMAP-Rule MF_00091

Cofactor

Binds 1 iron ion per subunit By similarity. HAMAP-Rule MF_00091

Subunit structure

Homodimer By similarity. HAMAP-Rule MF_00091

Sequence similarities

Belongs to the LuxS family.

Sequence caution

The sequence ABN45234.1 differs from that shown. Reason: Erroneous initiation.

Ontologies

Keywords
   Biological processAutoinducer synthesis
Quorum sensing
   LigandIron
Metal-binding
   Molecular functionLyase
   Technical termComplete proteome
Gene Ontology (GO)
   Biological_processquorum sensing

Inferred from electronic annotation. Source: UniProtKB-HAMAP

   Molecular_functionS-ribosylhomocysteine lyase activity

Inferred from electronic annotation. Source: UniProtKB-HAMAP

iron ion binding

Inferred from electronic annotation. Source: InterPro

Complete GO annotation...

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 160160S-ribosylhomocysteine lyase HAMAP-Rule MF_00091
PRO_0000298048

Sites

Metal binding571Iron By similarity
Metal binding611Iron By similarity
Metal binding1271Iron By similarity

Sequences

Sequence LengthMass (Da)Tools
A3CPX9 [UniParc].

Last modified August 21, 2007. Version 2.
Checksum: 3D1891BD485511BB

FASTA16017,873
        10         20         30         40         50         60 
MSKEVVVESF ELDHTIVKAP YVRLIGEETG PKGDIISNFD IRLVQPNEDS IPTAGLHTIE 

        70         80         90        100        110        120 
HLLAMLIRKR IDGMIDCSPF GCRTGFHMIM WGQHSSSQIA QVIKSCLEEI AESTSWEDVP 

       130        140        150        160 
GTTIESCGNY KDHSLFSAKE WAKLILSQGI SDDAFERHVI 

« Hide

References

[1]"Genome of the opportunistic pathogen Streptococcus sanguinis."
Xu P., Alves J.M., Kitten T., Brown A., Chen Z., Ozaki L.S., Manque P., Ge X., Serrano M.G., Puiu D., Hendricks S., Wang Y., Chaplin M.D., Akan D., Paik S., Peterson D.L., Macrina F.L., Buck G.A.
J. Bacteriol. 189:3166-3175(2007) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: SK36.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
CP000387 Genomic DNA. Translation: ABN45234.1. Different initiation.
RefSeqYP_001035784.1. NC_009009.1.

3D structure databases

ProteinModelPortalA3CPX9.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING388919.SSA_1853.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaABN45234; ABN45234; SSA_1853.
GeneID4807415.
KEGGssa:SSA_1853.
PATRIC19770633. VBIStrSan33173_1758.

Organism-specific databases

CMRSearch...

Phylogenomic databases

eggNOGCOG1854.
HOGENOMHOG000040372.
KOK07173.
OrthoDBEOG68WRBM.

Enzyme and pathway databases

BioCycSSAN388919:GHEN-1827-MONOMER.

Family and domain databases

Gene3D3.30.1360.80. 1 hit.
HAMAPMF_00091. LuxS.
InterProIPR011249. Metalloenz_LuxS/M16.
IPR003815. S-ribosylhomocysteinase.
[Graphical view]
PfamPF02664. LuxS. 1 hit.
[Graphical view]
PIRSFPIRSF006160. AI2. 1 hit.
PRINTSPR01487. LUXSPROTEIN.
ProDomPD013172. S-ribosylhomocysteinase. 1 hit.
[Graphical view] [Entries sharing at least one domain]
SUPFAMSSF63411. SSF63411. 1 hit.
ProtoNetSearch...

Entry information

Entry nameLUXS_STRSV
AccessionPrimary (citable) accession number: A3CPX9
Entry history
Integrated into UniProtKB/Swiss-Prot: August 21, 2007
Last sequence update: August 21, 2007
Last modified: April 16, 2014
This is version 49 of the entry and version 2 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Relevant documents

SIMILARITY comments

Index of protein domains and families