Q88YI6 (LUXS_LACPL) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended 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:	lp_0774

Organism

Lactobacillus plantarum (strain ATCC BAA-793 / NCIMB 8826 / WCFS1)

Taxonomic identifier

220668 [NCBI]

Taxonomic lineage

Bacteria › Firmicutes › Lactobacillales › Lactobacillaceae › Lactobacillus

Protein attributes

Sequence length	158 AA.
Sequence status	Complete.
Protein existence	Inferred 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 MF_00091
Catalytic activity	S-(5-deoxy-D-ribos-5-yl)-L-homocysteine = L-homocysteine + (4S)-4,5-dihydroxypentan-2,3-dione. HAMAP MF_00091
Cofactor	Binds 1 iron ion per subunit By similarity. HAMAP MF_00091
Subunit structure	Homodimer By similarity. HAMAP MF_00091
Sequence similarities	Belongs to the LuxS family.

Ontologies

Keywords
Biological process	Autoinducer synthesis Quorum sensing
Ligand	Iron Metal-binding
Molecular function	Lyase
Technical term	Complete proteome Reference proteome
Gene Ontology (GO)
Biological process	quorum sensing Inferred from electronic annotation. Source: UniProtKB-KW
Molecular function	S-ribosylhomocysteine lyase activity Inferred from electronic annotation. Source: EC iron ion binding 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 – 158	158	S-ribosylhomocysteine lyase HAMAP MF_00091		PRO_0000172233
Sites
	Metal binding	54	1	Iron By similarity
	Metal binding	58	1	Iron By similarity
	Metal binding	124	1	Iron By similarity

Sequences

	Sequence		Length	Mass (Da)
	Q88YI6 [UniParc]. Last modified June 6, 2003. Version 1. Checksum: 3EC768414712AE05	FASTA	158	17,428
	10 20 30 40 50 60 MAKVESFTLD HTKVLAPYVR KITVENGPKG DAITNFDLRL VQPNKTAIDT AGLHTIEHML 70 80 90 100 110 120 AGLLRDRMDG VIDCSPFGCR TGFHLITWGE HDTVEVAKAL KSSLEFIAGP AKWEDVQGTT 130 140 150 IDSCGNYKDH SLFSAKEWAK LILSQGISSD PFVRKVVE

References

[1]

"Complete genome sequence of Lactobacillus plantarum WCFS1." Kleerebezem M., Boekhorst J., van Kranenburg R., Molenaar D., Kuipers O.P., Leer R., Tarchini R., Peters S.A., Sandbrink H.M., Fiers M.W.E.J., Stiekema W., Klein Lankhorst R.M., Bron P.A., Hoffer S.M., Nierop Groot M.N., Kerkhoven R., De Vries M., Ursing B., De Vos W.M., Siezen R.J. Proc. Natl. Acad. Sci. U.S.A. 100:1990-1995(2003) [PubMed: 12566566] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: ATCC BAA-793 / NCIMB 8826 / WCFS1.

Cross-references

Sequence databases
EMBL GenBank DDBJ	AL935263 Genomic DNA. Translation: CCC78237.1.
RefSeq	NP_784522.1. NC_004567.1.
3D structure databases
ProteinModelPortal	Q88YI6.
ModBase	Search...
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	1063754.
GenomeReviews	Gene locus lp_0774 in contig AL935263_GR.
KEGG	lpl:lp_0774.
NMPDR	fig|220668.1.peg.656.
PATRIC	22247963. VBILacPla27411_0654.
Phylogenomic databases
HOGENOM	HBG347473.
OMA	TTFDIRM.
ProtClustDB	PRK02260.
Enzyme and pathway databases
BioCyc	LPLA220668:LP_0774-MONOMER.
Family and domain databases
HAMAP	MF_00091. LuxS. [Tree]
InterPro	IPR011249. Metalloenz_metal-bd. IPR003815. S-ribosylhomocysteinase. [Graphical view]
Gene3D	G3DSA:3.30.1360.80. S-ribosylhomocysteinase. 1 hit.
KO	K07173.
Pfam	PF02664. LuxS. 1 hit. [Graphical view]
PIRSF	PIRSF006160. AI2. 1 hit.
PRINTS	PR01487. LUXSPROTEIN.
ProDom	PD013172. S-ribosylhomocysteinase. 1 hit. [Graphical view] [Entries sharing at least one domain]
SUPFAM	SSF63411. Metalloenz_metal-bd. 1 hit.
ProtoNet	Search...

Entry information

Entry name

LUXS_LACPL

Accession

Primary (citable) accession number: Q88YI6
Secondary accession number(s): F9ULZ8

Entry history

Integrated into UniProtKB/Swiss-Prot:	June 6, 2003
Last sequence update:	June 6, 2003
Last modified:	January 25, 2012
This is version 51 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program