ID   LUXS_BORGP              Reviewed;         157 AA.
AC   Q661P2;
DT   15-MAR-2005, integrated into UniProtKB/Swiss-Prot.
DT   11-OCT-2004, sequence version 1.
DT   03-AUG-2022, entry version 96.
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=BG0376;
OS   Borrelia garinii subsp. bavariensis (strain ATCC BAA-2496 / DSM 23469 /
OS   PBi) (Borrelia bavariensis).
OC   Bacteria; Spirochaetes; Spirochaetales; Borreliaceae; Borreliella.
OX   NCBI_TaxID=290434;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-2496 / DSM 23469 / PBi;
RX   PubMed=15547252; DOI=10.1093/nar/gkh953;
RA   Gloeckner G., Lehmann R., Romualdi A., Pradella S., Schulte-Spechtel U.,
RA   Schilhabel M., Wilske B., Suehnel J., Platzer M.;
RT   "Comparative analysis of the Borrelia garinii genome.";
RL   Nucleic Acids Res. 32:6038-6046(2004).
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; CP000013; AAU07229.1; -; Genomic_DNA.
DR   RefSeq; WP_011193703.1; NZ_CP028872.1.
DR   AlphaFoldDB; Q661P2; -.
DR   SMR; Q661P2; -.
DR   STRING; 290434.BG0376; -.
DR   EnsemblBacteria; AAU07229; AAU07229; BG0376.
DR   KEGG; bga:BG0376; -.
DR   eggNOG; COG1854; Bacteria.
DR   HOGENOM; CLU_107531_1_0_12; -.
DR   OMA; GPMGCLT; -.
DR   OrthoDB; 1779617at2; -.
DR   Proteomes; UP000002276; 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.
FT   CHAIN           1..157
FT                   /note="S-ribosylhomocysteine lyase"
FT                   /id="PRO_0000172213"
FT   BINDING         53
FT                   /ligand="Fe cation"
FT                   /ligand_id="ChEBI:CHEBI:24875"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00091"
FT   BINDING         57
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   157 AA;  18133 MW;  86CD6AAC33AE2453 CRC64;
     MKKITSFTID HTKLNPGIYV SRKDTFENVI FTTIDIRIKA PNIEPIIENA AIHTIEHIGA
     TLLRNNEVWT EKIVYFGPMG CRTGFYLIIF GNYESKDLID LISWLFSEIV NFSEPIPGAS
     HKECGNYKDH NLDMAKYESS KYLQILNNIK EENLKYP