ID   LUXS_WOLSU              Reviewed;         163 AA.
AC   Q7MQP3;
DT   26-APR-2004, integrated into UniProtKB/Swiss-Prot.
DT   15-DEC-2003, sequence version 1.
DT   03-AUG-2022, 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}; OrderedLocusNames=WS2126;
OS   Wolinella succinogenes (strain ATCC 29543 / DSM 1740 / LMG 7466 / NCTC
OS   11488 / FDC 602W) (Vibrio succinogenes).
OC   Bacteria; Proteobacteria; Epsilonproteobacteria; Campylobacterales;
OC   Helicobacteraceae; Wolinella.
OX   NCBI_TaxID=273121;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 29543 / DSM 1740 / CCUG 13145 / JCM 31913 / LMG 7466 / NCTC
RC   11488 / FDC 602W;
RX   PubMed=14500908; DOI=10.1073/pnas.1932838100;
RA   Baar C., Eppinger M., Raddatz G., Simon J., Lanz C., Klimmek O.,
RA   Nandakumar R., Gross R., Rosinus A., Keller H., Jagtap P., Linke B.,
RA   Meyer F., Lederer H., Schuster S.C.;
RT   "Complete genome sequence and analysis of Wolinella succinogenes.";
RL   Proc. Natl. Acad. Sci. U.S.A. 100:11690-11695(2003).
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;
CC         Evidence={ECO:0000255|HAMAP-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; BX571662; CAE11124.1; -; Genomic_DNA.
DR   RefSeq; WP_011139906.1; NC_005090.1.
DR   AlphaFoldDB; Q7MQP3; -.
DR   SMR; Q7MQP3; -.
DR   STRING; 273121.WS2126; -.
DR   EnsemblBacteria; CAE11124; CAE11124; WS2126.
DR   KEGG; wsu:WS2126; -.
DR   eggNOG; COG1854; Bacteria.
DR   HOGENOM; CLU_107531_2_0_7; -.
DR   OMA; GPMGCLT; -.
DR   OrthoDB; 1779617at2; -.
DR   Proteomes; UP000000422; 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   Gene3D; 3.30.1360.80; -; 1.
DR   HAMAP; MF_00091; LuxS; 1.
DR   InterPro; IPR037005; LuxS_sf.
DR   InterPro; IPR011249; Metalloenz_LuxS/M16.
DR   InterPro; IPR003815; S-ribosylhomocysteinase.
DR   PANTHER; PTHR35799; PTHR35799; 1.
DR   Pfam; PF02664; LuxS; 1.
DR   PIRSF; PIRSF006160; AI2; 1.
DR   PRINTS; PR01487; LUXSPROTEIN.
DR   SUPFAM; SSF63411; SSF63411; 1.
PE   3: Inferred from homology;
KW   Autoinducer synthesis; Iron; Lyase; Metal-binding; Quorum sensing;
KW   Reference proteome.
FT   CHAIN           1..163
FT                   /note="S-ribosylhomocysteine lyase"
FT                   /id="PRO_0000172279"
FT   BINDING         54
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00091"
FT   BINDING         58
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00091"
FT   BINDING         128
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00091"
SQ   SEQUENCE   163 AA;  18429 MW;  B3CDED8512B6823C CRC64;
     MPLLDSFKVD HTKMPAPAVR LAKTMTTPKG DEIAVFDLRF CRPNQEILSE KGIHTLEHLF
     AGFMREHLNG EGIEIIDISP MGCRTGFYMS LIGVPKNARV LEAWRRSMED ILTLKSEEEI
     PELNIYQCGT ACMHSLKEAQ EIARTVLDRG ISIMDNEALK LQL