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P65333 (LUXS_STRA5) Reviewed, UniProtKB/Swiss-Prot

Last modified February 19, 2014. Version 54. 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:SAG0305
OrganismStreptococcus agalactiae serotype V (strain ATCC BAA-611 / 2603 V/R) [Complete proteome] [HAMAP]
Taxonomic identifier208435 [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.

Ontologies

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

Inferred from electronic annotation. Source: GOC

quorum 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_0000172262

Sites

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

Sequences

Sequence LengthMass (Da)Tools
P65333 [UniParc].

Last modified October 11, 2004. Version 1.
Checksum: F660D88A213D31BD

FASTA16017,736
        10         20         30         40         50         60 
MTKEVVVESF ELDHTIVKAP YVRLISEEVG PVGDIITNFD IRLIQPNENA IDTAGLHTIE 

        70         80         90        100        110        120 
HLLAKLIRQR INGLIDCSPF GCRTGFHMIM WGKQDATEIA KVIKSSLEAI AGGVTWEDVP 

       130        140        150        160 
GTTIESCGNY KDHSLHSAQE WAKLILSQGI SDNAFERHIV 

« Hide

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
AE009948 Genomic DNA. Translation: AAM99212.1.
RefSeqNP_687340.1. NC_004116.1.

3D structure databases

ProteinModelPortalP65333.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING208435.SAG0305.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaAAM99212; AAM99212; SAG0305.
GeneID1013094.
KEGGsag:SAG0305.
PATRIC19627389. VBIStrAga72745_0302.

Organism-specific databases

CMRSearch...

Phylogenomic databases

eggNOGCOG1854.
HOGENOMHOG000040372.
KOK07173.
OMARFKQPNQ.
OrthoDBEOG68WRBM.
ProtClustDBPRK02260.

Enzyme and pathway databases

BioCycSAGA208435:GHVY-380-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_STRA5
AccessionPrimary (citable) accession number: P65333
Secondary accession number(s): Q8E1P8, Q8E763
Entry history
Integrated into UniProtKB/Swiss-Prot: October 11, 2004
Last sequence update: October 11, 2004
Last modified: February 19, 2014
This is version 54 of the entry and version 1 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