Reviewed, UniProtKB/Swiss-Prot A7H2H9 (LUXS_CAMJD)

Names and origin

Protein names

Recommended name:
    S-ribosylhomocysteine lyase
    EC=4.4.1.21
Alternative name(s):
    Autoinducer-2 production protein luxS
    AI-2 synthesis protein

Gene names

Name:	luxS
Ordered Locus Names:	JJD26997_0531

Organism

Campylobacter jejuni subsp. doylei (strain ATCC BAA-1458 / RM4099 / 269.97) [Complete proteome] [HAMAP]

Taxonomic identifier

360109 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Epsilonproteobacteria › Campylobacterales › Campylobacteraceae › Campylobacter

Protein attributes

Sequence length	164 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
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.
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.
Subunit structure	Homodimer By similarity.
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
Gene Ontology (GO)
Biological process	quorum sensing Inferred from electronic annotation. Source: HAMAP
Molecular function	S-ribosylhomocysteine lyase activity Inferred from electronic annotation. Source: HAMAP iron ion binding Inferred from electronic annotation. Source: UniProtKB-KW
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 164	164	S-ribosylhomocysteine lyase HAMAP MF_00091		PRO_1000004841
Sites
	Metal binding	54	1	Iron By similarity
	Metal binding	58	1	Iron By similarity
	Metal binding	128	1	Iron By similarity

Sequences

	Sequence		Length	Mass (Da)
	A7H2H9-1 [UniParc]. Last modified September 11, 2007. Version 1. Checksum: 69650C8DFDAF92C0	FASTA	164	18,307
	10 20 30 40 50 60 MPLLDSFKVD HTKMPAPAVR LAKVMKTPKG DDISVFDLRF CVPNKDIMSE KGTHTLEHLF 70 80 90 100 110 120 AGFMREHLNS NAVEIIDISP MGCRTGFYMS LIGTPDEKSV VKAWENSMQD VLKVKSQEDI 130 140 150 160 PELNIYQCGS CKLHSLDEAK QIAQKVLNSG IGVMNNAELK LENL

References

[1]

"Complete genome sequence of Campylobacter jejuni subsp doylei 269.97 isolated from human blood." Fouts D.E., Mongodin E.F., Puiu D., Sebastian Y., Miller W.G., Mandrell R.E., Lastovica A.J., Nelson K.E. Submitted (JUL-2007) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases
EMBLGenBankDDBJ	CP000768 Genomic DNA. Translation: ABS44077.1.
RefSeq	YP_001397709.1.
3D structure databases
ModBase	Search...
Protein-protein interaction databases
STRING	A7H2H9.
Genome annotation databases
GeneID	5390444.
GenomeReviews	Gene locus JJD26997_0531 in contig CP000768_GR.
KEGG	cjd:JJD26997_0531.
Organism-specific databases
CMR	Search...
Phylogenomic databases
OMA	VRIAKTM.
Family and domain databases
HAMAP	MF_00091. [Tree]
InterPro	IPR003815. S-ribosylhomocysteinase. [Graphical view]
Gene3D	G3DSA:3.30.1360.80. S-ribosylhomocysteinase. 1 hit.
Pfam	PF02664. LuxS. 1 hit. [Graphical view]
PIRSF	PIRSF006160. AI2. 1 hit.
PRINTS	PR01487. LUXSPROTEIN.
ProDom	PD013172. LuxS. 1 hit. [Graphical view] [Entries sharing at least one domain]
ProtoNet	Search...

Entry information

Entry name

LUXS_CAMJD

Accession

Primary (citable) accession number: A7H2H9

Entry history

Integrated into UniProtKB/Swiss-Prot:	January 15, 2008
Last sequence update:	September 11, 2007
Last modified:	November 3, 2009
This is version 12 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)