ID   LUXS_BORAP              Reviewed;         157 AA.
AC   Q0SND6; G0IS21;
DT   21-AUG-2007, integrated into UniProtKB/Swiss-Prot.
DT   05-SEP-2006, sequence version 1.
DT   27-MAR-2024, entry version 98.
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=BAPKO_0386, BafPKo_0376;
OS   Borreliella afzelii (strain PKo) (Borrelia afzelii).
OC   Bacteria; Spirochaetota; Spirochaetia; Spirochaetales; Borreliaceae;
OC   Borreliella.
OX   NCBI_TaxID=390236;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PKo;
RX   PubMed=16914037; DOI=10.1186/1471-2164-7-211;
RA   Gloeckner G., Schulte-Spechtel U., Schilhabel M., Felder M., Suehnel J.,
RA   Wilske B., Platzer M.;
RT   "Comparative genome analysis: selection pressure on the Borrelia vls
RT   cassettes is essential for infectivity.";
RL   BMC Genomics 7:211-211(2006).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PKo;
RX   PubMed=22123755; DOI=10.1128/jb.05951-11;
RA   Casjens S.R., Mongodin E.F., Qiu W.G., Dunn J.J., Luft B.J.,
RA   Fraser-Liggett C.M., Schutzer S.E.;
RT   "Whole-genome sequences of two Borrelia afzelii and two Borrelia garinii
RT   Lyme disease agent isolates.";
RL   J. Bacteriol. 193:6995-6996(2011).
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; CP000395; ABH01642.1; -; Genomic_DNA.
DR   EMBL; CP002933; AEL69602.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q0SND6; -.
DR   SMR; Q0SND6; -.
DR   STRING; 29518.BLA32_02430; -.
DR   KEGG; baf:BAPKO_0386; -.
DR   KEGG; bafz:BafPKo_0376; -.
DR   PATRIC; fig|390236.22.peg.369; -.
DR   eggNOG; COG1854; Bacteria.
DR   HOGENOM; CLU_107531_1_0_12; -.
DR   OrthoDB; 9788129at2; -.
DR   Proteomes; UP000005216; 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.
FT   CHAIN           1..157
FT                   /note="S-ribosylhomocysteine lyase"
FT                   /id="PRO_0000297986"
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;  18117 MW;  93D93BE926FB3548 CRC64;
     MKKITSFTID HTKLNPGIYV SRKDTFENVI FTTIDIRIKA PNIEPIIENA AIHTIEHIGA
     TLLRNNEVWA EKIVYFGPMG CRTGFYLIIF GNYESKDLID LISWLFSEIV NFSEPIPGAS
     HKECGNYKEH NLDMAKYESS KYLQILNNIK EENLKYP
//