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Q049W0 (LUXS2_LACDB) Reviewed, UniProtKB/Swiss-Prot

Last modified April 16, 2014. Version 46. 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 2

EC=4.4.1.21
Alternative name(s):
AI-2 synthesis protein 2
Autoinducer-2 production protein LuxS 2
Gene names
Name:luxS2
Ordered Locus Names:LBUL_1233
OrganismLactobacillus delbrueckii subsp. bulgaricus (strain ATCC BAA-365) [Complete proteome] [HAMAP]
Taxonomic identifier321956 [NCBI]
Taxonomic lineageBacteriaFirmicutesBacilliLactobacillalesLactobacillaceaeLactobacillus

Protein attributes

Sequence length157 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_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 – 157157S-ribosylhomocysteine lyase 2 HAMAP-Rule MF_00091
PRO_0000298008

Sites

Metal binding541Iron By similarity
Metal binding581Iron By similarity
Metal binding1241Iron By similarity

Sequences

Sequence LengthMass (Da)Tools
Q049W0 [UniParc].

Last modified November 14, 2006. Version 1.
Checksum: EA4BBDE91CA8AAC4

FASTA15717,511
        10         20         30         40         50         60 
MAKVESFTLD HTKVKAPYVR LITEETGKKG DVISNYDLRL VQPNTNAIPT AGLHTIEHLL 

        70         80         90        100        110        120 
AGLLRDRLDG VIDCSPFGCR TGFHLITWGE HSTTEVAKAL KGSLDAIAND IEWKDVQGTD 

       130        140        150 
KYSCGNYRDH SLFSAKEWSK EILSQGISDQ PFERHVI 

« Hide

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
CP000412 Genomic DNA. Translation: ABJ58762.1.
RefSeqYP_813200.1. NC_008529.1.

3D structure databases

ProteinModelPortalQ049W0.
SMRQ049W0. Positions 3-151.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING321956.LBUL_1233.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaABJ58762; ABJ58762; LBUL_1233.
GeneID4436307.
KEGGlbu:LBUL_1233.
PATRIC22222307. VBILacDel70259_1203.

Organism-specific databases

CMRSearch...

Phylogenomic databases

eggNOGCOG1854.
HOGENOMHOG000040372.
KOK07173.
OMAIANDIEW.
OrthoDBEOG68WRBM.
ProtClustDBPRK02260.

Enzyme and pathway databases

BioCycLDEL321956:GI15-1228-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 nameLUXS2_LACDB
AccessionPrimary (citable) accession number: Q049W0
Entry history
Integrated into UniProtKB/Swiss-Prot: August 21, 2007
Last sequence update: November 14, 2006
Last modified: April 16, 2014
This is version 46 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