ID   LUXS_LISW6              Reviewed;         155 AA.
AC   A0AI91;
DT   21-AUG-2007, integrated into UniProtKB/Swiss-Prot.
DT   28-NOV-2006, sequence version 1.
DT   02-SEP-2026, entry version 95.
DE   RecName: Full=S-ribosylhomocysteine lyase {ECO:0000255|HAMAP-Rule:MF_00091};
DE            EC=4.4.1.21 {ECO:0000255|HAMAP-Rule:MF_00091};
DE   AltName: Full=AI-2 synthesis protein {ECO:0000255|HAMAP-Rule:MF_00091};
DE   AltName: Full=Autoinducer-2 production protein LuxS {ECO:0000255|HAMAP-Rule:MF_00091};
GN   Name=luxS {ECO:0000255|HAMAP-Rule:MF_00091};
GN   OrderedLocusNames=lwe1305;
OS   Listeria welshimeri serovar 6b (strain ATCC 35897 / DSM 20650 / CCUG 15529
OS   / CIP 8149 / NCTC 11857 / SLCC 5334 / V8).
OC   Bacteria; Bacillati; Bacillota; Bacilli; Caryophanales; Listeriaceae;
OC   Listeria.
OX   NCBI_TaxID=386043;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 35897 / DSM 20650 / CCUG 15529 / CIP 8149 / NCTC 11857 /
RC   SLCC 5334 / V8;
RX   PubMed=16936040; DOI=10.1128/jb.00758-06;
RA   Hain T., Steinweg C., Kuenne C.T., Billion A., Ghai R., Chatterjee S.S.,
RA   Domann E., Kaerst U., Goesmann A., Bekel T., Bartels D., Kaiser O.,
RA   Meyer F., Puehler A., Weisshaar B., Wehland J., Liang C., Dandekar T.,
RA   Lampidis R., Kreft J., Goebel W., Chakraborty T.;
RT   "Whole-genome sequence of Listeria welshimeri reveals common steps in
RT   genome reduction with Listeria innocua as compared to Listeria
RT   monocytogenes.";
RL   J. Bacteriol. 188:7405-7415(2006).
CC   -!- FUNCTION: Involved in the synthesis of autoinducer 2 (AI-2) which is
CC       secreted by bacteria and is used to communicate both the cell density
CC       and the metabolic potential of the environment. The regulation of gene
CC       expression in response to changes in cell density is called quorum
CC       sensing. Catalyzes the transformation of S-ribosylhomocysteine (RHC) to
CC       homocysteine (HC) and 4,5-dihydroxy-2,3-pentadione (DPD).
CC       {ECO:0000255|HAMAP-Rule:MF_00091}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=S-(5-deoxy-D-ribos-5-yl)-L-homocysteine = (S)-4,5-
CC         dihydroxypentane-2,3-dione + L-homocysteine; Xref=Rhea:RHEA:17753,
CC         ChEBI:CHEBI:29484, ChEBI:CHEBI:58195, ChEBI:CHEBI:58199; EC=4.4.1.21;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00091};
CC   -!- COFACTOR:
CC       Name=Fe cation; Xref=ChEBI:CHEBI:24875; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00091};
CC       Note=Binds 1 Fe cation per subunit. {ECO:0000255|HAMAP-Rule:MF_00091};
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_00091}.
CC   -!- SIMILARITY: Belongs to the LuxS family. {ECO:0000255|HAMAP-
CC       Rule:MF_00091}.
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DR   EMBL; AM263198; CAK20723.1; -; Genomic_DNA.
DR   RefSeq; WP_011702112.1; NC_008555.1.
DR   AlphaFoldDB; A0AI91; -.
DR   SMR; A0AI91; -.
DR   STRING; 386043.lwe1305; -.
DR   PaxDb; 386043-lwe1305; -.
DR   GeneID; 61189182; -.
DR   KEGG; lwe:lwe1305; -.
DR   eggNOG; COG1854; Bacteria.
DR   HOGENOM; CLU_107531_2_0_9; -.
DR   OrthoDB; 9788129at2; -.
DR   Proteomes; UP000000779; Chromosome.
DR   GO; GO:0005506; F:iron ion binding; IEA:InterPro.
DR   GO; GO:0043768; F:S-ribosylhomocysteine lyase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0009372; P:quorum sensing; IEA:UniProtKB-UniRule.
DR   FunFam; 3.30.1360.80:FF:000002; S-ribosylhomocysteine lyase; 1.
DR   Gene3D; 3.30.1360.80; S-ribosylhomocysteinase (LuxS); 1.
DR   HAMAP; MF_00091; LuxS; 1.
DR   InterPro; IPR037005; LuxS_sf.
DR   InterPro; IPR011249; Metalloenz_LuxS/M16.
DR   InterPro; IPR003815; S-ribosylhomocysteinase.
DR   NCBIfam; NF002604; PRK02260.1-4; 1.
DR   PANTHER; PTHR35799; S-RIBOSYLHOMOCYSTEINE LYASE; 1.
DR   PANTHER; PTHR35799:SF1; S-RIBOSYLHOMOCYSTEINE LYASE; 1.
DR   Pfam; PF02664; LuxS; 1.
DR   PIRSF; PIRSF006160; AI2; 1.
DR   PRINTS; PR01487; LUXSPROTEIN.
DR   SUPFAM; SSF63411; LuxS/MPP-like metallohydrolase; 1.
PE   3: Inferred from homology;
KW   Autoinducer synthesis; Iron; Lyase; Metal-binding; Quorum sensing;
KW   Reference proteome.
FT   CHAIN           1..155
FT                   /note="S-ribosylhomocysteine lyase"
FT                   /id="PRO_0000298014"
FT   BINDING         57
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00091"
FT   BINDING         61
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00091"
FT   BINDING         124
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00091"
SQ   SEQUENCE   155 AA;  17367 MW;  911C20F98D2DBD85 CRC64;
     MTEKMNVESF NLDHTKVKAP FVRLAGTKVG LHGDEIYKYD VRFKQPNKEH MDMPALHSLE
     HLMAELARNH TDKLVDISPM GCQTGFYVSF INHNDYDDAL EILATTLTDV LAATEVPACN
     EVQCGWAASH SLEGAQALAA EFLAKRDEWK NVFGE
//