ID   LUXS_CAMJE              Reviewed;         164 AA.
AC   Q9PN97; Q0P958;
DT   06-JUN-2002, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2000, sequence version 1.
DT   27-MAR-2024, entry version 118.
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=Cj1198;
OS   Campylobacter jejuni subsp. jejuni serotype O:2 (strain ATCC 700819 /
OS   NCTC 11168).
OC   Bacteria; Campylobacterota; Epsilonproteobacteria; Campylobacterales;
OC   Campylobacteraceae; Campylobacter.
OX   NCBI_TaxID=192222;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700819 / NCTC 11168;
RX   PubMed=10688204; DOI=10.1038/35001088;
RA   Parkhill J., Wren B.W., Mungall K.L., Ketley J.M., Churcher C.M.,
RA   Basham D., Chillingworth T., Davies R.M., Feltwell T., Holroyd S.,
RA   Jagels K., Karlyshev A.V., Moule S., Pallen M.J., Penn C.W., Quail M.A.,
RA   Rajandream M.A., Rutherford K.M., van Vliet A.H.M., Whitehead S.,
RA   Barrell B.G.;
RT   "The genome sequence of the food-borne pathogen Campylobacter jejuni
RT   reveals hypervariable sequences.";
RL   Nature 403:665-668(2000).
RN   [2]
RP   FUNCTION.
RX   PubMed=11988522; DOI=10.1099/00221287-148-5-1475;
RA   Elvers K.T., Park S.F.;
RT   "Quorum sensing in Campylobacter jejuni: detection of a luxS encoded
RT   signalling molecule.";
RL   Microbiology 148:1475-1481(2002).
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, ECO:0000269|PubMed:11988522}.
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; AL111168; CAL35313.1; -; Genomic_DNA.
DR   PIR; H81325; H81325.
DR   RefSeq; WP_002857890.1; NZ_SZUC01000001.1.
DR   RefSeq; YP_002344589.1; NC_002163.1.
DR   AlphaFoldDB; Q9PN97; -.
DR   SMR; Q9PN97; -.
DR   IntAct; Q9PN97; 32.
DR   STRING; 192222.Cj1198; -.
DR   PaxDb; 192222-Cj1198; -.
DR   EnsemblBacteria; CAL35313; CAL35313; Cj1198.
DR   GeneID; 905488; -.
DR   KEGG; cje:Cj1198; -.
DR   PATRIC; fig|192222.6.peg.1179; -.
DR   eggNOG; COG1854; Bacteria.
DR   HOGENOM; CLU_107531_2_0_7; -.
DR   OrthoDB; 9788129at2; -.
DR   BRENDA; 4.4.1.21; 1087.
DR   Proteomes; UP000000799; 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; 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   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..164
FT                   /note="S-ribosylhomocysteine lyase"
FT                   /id="PRO_0000172214"
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   164 AA;  18209 MW;  717CEADF980E1EC1 CRC64;
     MPLLDSFKVD HTKMPAPAVR LAKVMKTPKG DDISVFDLRF CIPNKDIMSE KGTHTLEHLF
     AGFMRDHLNS NSVEIIDISP MGCRTGFYMS LIGTPDEKSI AKAWEAAMKD VLSVSDQSKI
     PELNIYQCGT CAMHSLDEAK QIAQKVLNLG ISIINNKELK LENA
//