Reviewed, UniProtKB/Swiss-Prot B7J1U9 (LUXS_BORBZ)

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:	BbuZS7_0379

Organism

Borrelia burgdorferi (strain ZS7) [Complete proteome] [HAMAP]

Taxonomic identifier

445985 [NCBI]

Taxonomic lineage

Bacteria › Spirochaetes › Spirochaetales › Spirochaetaceae › Borrelia › Borrelia burgdorferi group

Protein attributes

Sequence length	157 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 – 157	157	S-ribosylhomocysteine lyase HAMAP MF_00091		PRO_1000117216
Sites
	Metal binding	53	1	Iron By similarity
	Metal binding	57	1	Iron By similarity
	Metal binding	124	1	Iron By similarity

Sequences

	Sequence		Length	Mass (Da)
	B7J1U9-1 [UniParc]. Last modified February 10, 2009. Version 1. Checksum: 89C3844C37BB7504	FASTA	157	18,098
	10 20 30 40 50 60 MKKITSFTID HTKLNPGIYV SRKDTFENVI FTTIDIRIKA PNIEPIIENA AIHTIEHIGA 70 80 90 100 110 120 TLLRNNEVWT EKIVYFGPMG CRTGFYLIIF GDYESKDLVD LVSWLFSEIV NFSEPIPGAS 130 140 150 DKECGNYKEH NLDMAKYESS KYLQILNNIK EENLKYP

References

[1]	"Genome sequence of Borrelia burgdorferi strain ZS7." Fraser-Liggett C.M., Mongodin E.F., Casjens B., Dunn J., Luft B., Qiu W., Schutzer S., Ouyang S. Submitted (OCT-2008) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases
EMBLGenBankDDBJ	CP001205 Genomic DNA. Translation: ACK74841.1.
RefSeq	YP_002374894.1.
3D structure databases
ModBase	Search...
Genome annotation databases
GeneID	7106819.
GenomeReviews	Gene locus BbuZS7_0379 in contig CP001205_GR.
KEGG	bbz:BbuZS7_0379.
Organism-specific databases
CMR	Search...
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.
ProtoNet	Search...

Entry information

Entry name

LUXS_BORBZ

Accession

Primary (citable) accession number: B7J1U9

Entry history

Integrated into UniProtKB/Swiss-Prot:	April 14, 2009
Last sequence update:	February 10, 2009
Last modified:	October 13, 2009
This is version 8 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)