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B2URT5 (LUXS_HELPS) Reviewed, UniProtKB/Swiss-Prot

Last modified April 16, 2014. Version 37. 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:HPSH_00525
OrganismHelicobacter pylori (strain Shi470) [Complete proteome] [HAMAP]
Taxonomic identifier512562 [NCBI]
Taxonomic lineageBacteriaProteobacteriaEpsilonproteobacteriaCampylobacteralesHelicobacteraceaeHelicobacter

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
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_1000093311

Sites

Metal binding581Iron By similarity
Metal binding621Iron By similarity
Metal binding1251Iron By similarity

Sequences

Sequence LengthMass (Da)Tools
B2URT5 [UniParc].

Last modified July 1, 2008. Version 1.
Checksum: DB29652FA967007B

FASTA15517,696
        10         20         30         40         50         60 
MKTPKMNVES FNLDHTKVKA PYVRIADRKK GVNGDLIVKY DVRFKQPNKD HMDMPSLHSL 

        70         80         90        100        110        120 
EHLVAEIIRN HASYVIDWSP MGCQTGFYLT VLNHDNYTEI LEILEKTMQD VLKATEVPAS 

       130        140        150 
NEKQCGWAAN HTLEGAQNLA RAFLDKRAEW SEVGV 

« Hide

References

[1]"Genome sequence of Helicobacter pylori from the remote Amazon: traces of Asian ancestry of the first Americans."
Kersulyte D., Kalia A., Gilman R.H., Berg D.E.
Submitted (MAY-2008) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: Shi470.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
CP001072 Genomic DNA. Translation: ACD47567.1.
RefSeqYP_001909597.1. NC_010698.2.

3D structure databases

ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING512562.HPSH_00525.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaACD47567; ACD47567; HPSH_00525.
GeneID6296483.
KEGGhps:HPSH_00525.
PATRIC20611567. VBIHelPyl23559_0101.

Organism-specific databases

CMRSearch...

Phylogenomic databases

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

Enzyme and pathway databases

BioCycHPYL512562:GHHZ-108-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_HELPS
AccessionPrimary (citable) accession number: B2URT5
Entry history
Integrated into UniProtKB/Swiss-Prot: March 24, 2009
Last sequence update: July 1, 2008
Last modified: April 16, 2014
This is version 37 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