ID   LUXS_CROS8              Reviewed;         171 AA.
AC   A7MJ28;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   02-OCT-2007, sequence version 1.
DT   03-AUG-2022, entry version 74.
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=ESA_00581;
OS   Cronobacter sakazakii (strain ATCC BAA-894) (Enterobacter sakazakii).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Cronobacter.
OX   NCBI_TaxID=290339;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-894;
RX   PubMed=20221447; DOI=10.1371/journal.pone.0009556;
RA   Kucerova E., Clifton S.W., Xia X.Q., Long F., Porwollik S., Fulton L.,
RA   Fronick C., Minx P., Kyung K., Warren W., Fulton R., Feng D., Wollam A.,
RA   Shah N., Bhonagiri V., Nash W.E., Hallsworth-Pepin K., Wilson R.K.,
RA   McClelland M., Forsythe S.J.;
RT   "Genome sequence of Cronobacter sakazakii BAA-894 and comparative genomic
RT   hybridization analysis with other Cronobacter species.";
RL   PLoS ONE 5:E9556-E9556(2010).
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; CP000783; ABU75865.1; -; Genomic_DNA.
DR   RefSeq; WP_012123949.1; NC_009778.1.
DR   AlphaFoldDB; A7MJ28; -.
DR   SMR; A7MJ28; -.
DR   EnsemblBacteria; ABU75865; ABU75865; ESA_00581.
DR   KEGG; esa:ESA_00581; -.
DR   PATRIC; fig|290339.8.peg.520; -.
DR   HOGENOM; CLU_107531_2_0_6; -.
DR   OMA; GPMGCLT; -.
DR   OrthoDB; 1779617at2; -.
DR   Proteomes; UP000000260; 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..171
FT                   /note="S-ribosylhomocysteine lyase"
FT                   /id="PRO_1000004843"
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   171 AA;  19224 MW;  763EF0740F1C0BBF CRC64;
     MPLLDSFTVD HTRMEAPAVR VAKTMNTPHG DTITVFDLRF CVPNKEVMPE KGIHTLEHLF
     AGFMRDHLNG NGVEIIDISP MGCRTGFYMS LIGQPDEQRV ADAWKAAMQD VLKVKAQNQI
     PELNVYQCGT YEMHSLEEAQ EIARHIIERG VGVNSNDALA LPKEKLQELH L