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Q5SI29 (LUXS_THET8) Reviewed, UniProtKB/Swiss-Prot

Last modified April 16, 2014. Version 52. 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:TTHA1551
OrganismThermus thermophilus (strain HB8 / ATCC 27634 / DSM 579) [Reference proteome] [HAMAP]
Taxonomic identifier300852 [NCBI]
Taxonomic lineageBacteriaDeinococcus-ThermusDeinococciThermalesThermaceaeThermus

Protein attributes

Sequence length155 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
Reference 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 – 155155S-ribosylhomocysteine lyase HAMAP-Rule MF_00091
PRO_0000298054

Sites

Metal binding531Iron By similarity
Metal binding571Iron By similarity
Metal binding1211Iron By similarity

Sequences

Sequence LengthMass (Da)Tools
Q5SI29 [UniParc].

Last modified December 21, 2004. Version 1.
Checksum: FAB8FA5818E7E9BA

FASTA15516,823
        10         20         30         40         50         60 
MAEVESFSLD HTKVKAPYVR LAGRKALAGG VVEKYDLRLA QPNREALPTG ALHTLEHLLA 

        70         80         90        100        110        120 
GYLRDHLPGV IDLSPMGCRT GFYLVVEGPV GEEKVLEAFA QALKDVLAHE GEVPGASFRE 

       130        140        150 
CGNYRDHDLP GAKAWAEKVL KAGLRVQATV PLEAR 

« Hide

References

[1]"Complete genome sequence of Thermus thermophilus HB8."
Masui R., Kurokawa K., Nakagawa N., Tokunaga F., Koyama Y., Shibata T., Oshima T., Yokoyama S., Yasunaga T., Kuramitsu S.
Submitted (NOV-2004) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: HB8 / ATCC 27634 / DSM 579.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
AP008226 Genomic DNA. Translation: BAD71374.1.
RefSeqYP_144817.1. NC_006461.1.

3D structure databases

ProteinModelPortalQ5SI29.
SMRQ5SI29. Positions 4-153.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING300852.TTHA1551.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaBAD71374; BAD71374; BAD71374.
GeneID3167928.
KEGGttj:TTHA1551.
PATRIC23958059. VBITheThe93045_1522.

Phylogenomic databases

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

Enzyme and pathway databases

BioCycTTHE300852:GH8R-1590-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_THET8
AccessionPrimary (citable) accession number: Q5SI29
Entry history
Integrated into UniProtKB/Swiss-Prot: August 21, 2007
Last sequence update: December 21, 2004
Last modified: April 16, 2014
This is version 52 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