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Protein

S-ribosylhomocysteine lyase

Gene

luxS

Organism
Lactobacillus gasseri (strain ATCC 33323 / DSM 20243 / JCM 1131 / NCIMB 11718 / AM63)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

Functioni

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).UniRule annotation

Catalytic activityi

S-(5-deoxy-D-ribos-5-yl)-L-homocysteine = L-homocysteine + (4S)-4,5-dihydroxypentan-2,3-dione.UniRule annotation

Cofactori

Fe cationUniRule annotationNote: Binds 1 Fe cation per subunit.UniRule annotation

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi54 – 541IronUniRule annotation
Metal bindingi58 – 581IronUniRule annotation
Metal bindingi124 – 1241IronUniRule annotation

GO - Molecular functioni

  1. iron ion binding Source: InterPro
  2. S-ribosylhomocysteine lyase activity Source: UniProtKB-HAMAP

GO - Biological processi

  1. quorum sensing Source: UniProtKB-HAMAP
Complete GO annotation...

Keywords - Molecular functioni

Lyase

Keywords - Biological processi

Autoinducer synthesis, Quorum sensing

Keywords - Ligandi

Iron, Metal-binding

Enzyme and pathway databases

BioCyciLGAS324831:GHTY-1662-MONOMER.

Names & Taxonomyi

Protein namesi
Recommended name:
S-ribosylhomocysteine lyaseUniRule annotation (EC:4.4.1.21UniRule annotation)
Alternative name(s):
AI-2 synthesis proteinUniRule annotation
Autoinducer-2 production protein LuxSUniRule annotation
Gene namesi
Name:luxSUniRule annotation
Ordered Locus Names:LGAS_1662
OrganismiLactobacillus gasseri (strain ATCC 33323 / DSM 20243 / JCM 1131 / NCIMB 11718 / AM63)
Taxonomic identifieri324831 [NCBI]
Taxonomic lineageiBacteriaFirmicutesBacilliLactobacillalesLactobacillaceaeLactobacillus
ProteomesiUP000000664: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 158158S-ribosylhomocysteine lyasePRO_0000298009Add
BLAST

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Protein-protein interaction databases

STRINGi324831.LGAS_1662.

Structurei

3D structure databases

ProteinModelPortaliQ041B8.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the LuxS family.UniRule annotation

Phylogenomic databases

eggNOGiCOG1854.
HOGENOMiHOG000040372.
KOiK07173.
OrthoDBiEOG68WRBM.

Family and domain databases

Gene3Di3.30.1360.80. 1 hit.
HAMAPiMF_00091. LuxS.
InterProiIPR011249. Metalloenz_LuxS/M16.
IPR003815. S-ribosylhomocysteinase.
[Graphical view]
PfamiPF02664. LuxS. 1 hit.
[Graphical view]
PIRSFiPIRSF006160. AI2. 1 hit.
PRINTSiPR01487. LUXSPROTEIN.
ProDomiPD013172. S-ribosylhomocysteinase. 1 hit.
[Graphical view] [Entries sharing at least one domain]
SUPFAMiSSF63411. SSF63411. 1 hit.

Sequencei

Sequence statusi: Complete.

Q041B8-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MGKVESFELD HTKVKAPYVR LITVEEGKKG DKISNFDLRL VQPNENAIPT
60 70 80 90 100
GGLHTIEHLL AGLLRDRIDG YIDCSPFGCR TGFHLLVWGT PSTTDVAKAL
110 120 130 140 150
KEALEEIRDK IQWEDVPGTT IKSCGNYRDH SLFSAKQWSR DILEKGISDD

PFERNVVE
Length:158
Mass (Da):17,796
Last modified:August 21, 2007 - v2
Checksum:i3B42AB1885BB54D8
GO

Sequence cautioni

The sequence ABJ60954.1 differs from that shown. Reason: Erroneous initiation. Curated

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000413 Genomic DNA. Translation: ABJ60954.1. Different initiation.
RefSeqiYP_815392.2. NC_008530.1.

Genome annotation databases

EnsemblBacteriaiABJ60954; ABJ60954; LGAS_1662.
GeneIDi4439137.
KEGGilga:LGAS_1662.
PATRICi22231491. VBILacGas62225_1589.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000413 Genomic DNA. Translation: ABJ60954.1. Different initiation.
RefSeqiYP_815392.2. NC_008530.1.

3D structure databases

ProteinModelPortaliQ041B8.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi324831.LGAS_1662.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiABJ60954; ABJ60954; LGAS_1662.
GeneIDi4439137.
KEGGilga:LGAS_1662.
PATRICi22231491. VBILacGas62225_1589.

Phylogenomic databases

eggNOGiCOG1854.
HOGENOMiHOG000040372.
KOiK07173.
OrthoDBiEOG68WRBM.

Enzyme and pathway databases

BioCyciLGAS324831:GHTY-1662-MONOMER.

Family and domain databases

Gene3Di3.30.1360.80. 1 hit.
HAMAPiMF_00091. LuxS.
InterProiIPR011249. Metalloenz_LuxS/M16.
IPR003815. S-ribosylhomocysteinase.
[Graphical view]
PfamiPF02664. LuxS. 1 hit.
[Graphical view]
PIRSFiPIRSF006160. AI2. 1 hit.
PRINTSiPR01487. LUXSPROTEIN.
ProDomiPD013172. S-ribosylhomocysteinase. 1 hit.
[Graphical view] [Entries sharing at least one domain]
SUPFAMiSSF63411. SSF63411. 1 hit.
ProtoNetiSearch...

Publicationsi

  1. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: ATCC 33323 / DSM 20243 / JCM 1131 / NCIMB 11718 / AM63.

Entry informationi

Entry nameiLUXS_LACGA
AccessioniPrimary (citable) accession number: Q041B8
Entry historyi
Integrated into UniProtKB/Swiss-Prot: August 21, 2007
Last sequence update: August 21, 2007
Last modified: January 7, 2015
This is version 54 of the entry and version 2 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into Uniref entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.