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Q9JXL8 (LUXS_NEIMB) Reviewed, UniProtKB/Swiss-Prot

Last modified May 14, 2014. Version 76. 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:NMB1981
OrganismNeisseria meningitidis serogroup B (strain MC58) [Reference proteome] [HAMAP]
Taxonomic identifier122586 [NCBI]
Taxonomic lineageBacteriaProteobacteriaBetaproteobacteriaNeisserialesNeisseriaceaeNeisseria

Protein attributes

Sequence length168 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 – 168168S-ribosylhomocysteine lyase HAMAP-Rule MF_00091
PRO_0000172240

Sites

Metal binding541Iron By similarity
Metal binding581Iron By similarity
Metal binding1281Iron By similarity

Sequences

Sequence LengthMass (Da)Tools
Q9JXL8 [UniParc].

Last modified October 1, 2000. Version 1.
Checksum: D4D3D9E4C6888953

FASTA16818,653
        10         20         30         40         50         60 
MPLLDSFKVD HTRMHAPAVR VAKTMTTPKG DTITVFDLRF CVPNKEILPG KGIHTLEHLF 

        70         80         90        100        110        120 
AGFMRDHLNG NGVEIIDISP MGCRTGFYMS LIGTPSEQQV ADAWLASMQD VLNVKDQSKI 

       130        140        150        160 
PELNEYQCGT YQMHSLAEAQ QIAQNVLARK VAVNKNEELT LDEGLLNA 

« Hide

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
AE002098 Genomic DNA. Translation: AAF42309.1.
PIRF81020.
RefSeqNP_274974.1. NC_003112.2.

3D structure databases

ProteinModelPortalQ9JXL8.
SMRQ9JXL8. Positions 3-162.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING122586.NMB1981.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaAAF42309; AAF42309; NMB1981.
GeneID904156.
KEGGnme:NMB1981.
PATRIC20360037. VBINeiMen85645_2523.

Phylogenomic databases

eggNOGCOG1854.
HOGENOMHOG000040371.
KOK07173.
OMARDHLNSD.
OrthoDBEOG68WRBM.

Enzyme and pathway databases

BioCycNMEN122586:GHGG-2038-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_NEIMB
AccessionPrimary (citable) accession number: Q9JXL8
Entry history
Integrated into UniProtKB/Swiss-Prot: June 6, 2002
Last sequence update: October 1, 2000
Last modified: May 14, 2014
This is version 76 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