ID   THIG_CUPMC              Reviewed;         282 AA.
AC   Q1LS25;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   30-MAY-2006, sequence version 1.
DT   03-AUG-2022, entry version 89.
DE   RecName: Full=Thiazole synthase {ECO:0000255|HAMAP-Rule:MF_00443};
DE            EC=2.8.1.10 {ECO:0000255|HAMAP-Rule:MF_00443};
GN   Name=thiG {ECO:0000255|HAMAP-Rule:MF_00443}; OrderedLocusNames=Rmet_0165;
OS   Cupriavidus metallidurans (strain ATCC 43123 / DSM 2839 / NBRC 102507 /
OS   CH34) (Ralstonia metallidurans).
OC   Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales;
OC   Burkholderiaceae; Cupriavidus.
OX   NCBI_TaxID=266264;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 43123 / DSM 2839 / NBRC 102507 / CH34;
RX   PubMed=20463976; DOI=10.1371/journal.pone.0010433;
RA   Janssen P.J., Van Houdt R., Moors H., Monsieurs P., Morin N., Michaux A.,
RA   Benotmane M.A., Leys N., Vallaeys T., Lapidus A., Monchy S., Medigue C.,
RA   Taghavi S., McCorkle S., Dunn J., van der Lelie D., Mergeay M.;
RT   "The complete genome sequence of Cupriavidus metallidurans strain CH34, a
RT   master survivalist in harsh and anthropogenic environments.";
RL   PLoS ONE 5:E10433-E10433(2010).
CC   -!- FUNCTION: Catalyzes the rearrangement of 1-deoxy-D-xylulose 5-phosphate
CC       (DXP) to produce the thiazole phosphate moiety of thiamine. Sulfur is
CC       provided by the thiocarboxylate moiety of the carrier protein ThiS. In
CC       vitro, sulfur can be provided by H(2)S. {ECO:0000255|HAMAP-
CC       Rule:MF_00443}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=1-deoxy-D-xylulose 5-phosphate + 2-iminoacetate + [sulfur-
CC         carrier protein ThiS]-C-terminal Gly-NH-CH2-C(O)SH = 2-[(2R,5Z)-2-
CC         carboxy-4-methylthiazol-5(2H)-ylidene]ethyl phosphate + [sulfur-
CC         carrier protein ThiS]-C-terminal Gly-Gly + 2 H(+) + 2 H2O;
CC         Xref=Rhea:RHEA:26297, Rhea:RHEA-COMP:12908, Rhea:RHEA-COMP:12909,
CC         ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:57792,
CC         ChEBI:CHEBI:62899, ChEBI:CHEBI:77846, ChEBI:CHEBI:90619,
CC         ChEBI:CHEBI:90778; EC=2.8.1.10; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00443};
CC   -!- PATHWAY: Cofactor biosynthesis; thiamine diphosphate biosynthesis.
CC       {ECO:0000255|HAMAP-Rule:MF_00443}.
CC   -!- SUBUNIT: Homotetramer. Forms heterodimers with either ThiH or ThiS.
CC       {ECO:0000255|HAMAP-Rule:MF_00443}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00443}.
CC   -!- SIMILARITY: Belongs to the ThiG family. {ECO:0000255|HAMAP-
CC       Rule:MF_00443}.
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DR   EMBL; CP000352; ABF07051.1; -; Genomic_DNA.
DR   RefSeq; WP_008648498.1; NC_007973.1.
DR   AlphaFoldDB; Q1LS25; -.
DR   SMR; Q1LS25; -.
DR   STRING; 266264.Rmet_0165; -.
DR   EnsemblBacteria; ABF07051; ABF07051; Rmet_0165.
DR   GeneID; 60822888; -.
DR   KEGG; rme:Rmet_0165; -.
DR   eggNOG; COG2022; Bacteria.
DR   HOGENOM; CLU_062233_1_0_4; -.
DR   OMA; PHNFQLI; -.
DR   OrthoDB; 784095at2; -.
DR   UniPathway; UPA00060; -.
DR   Proteomes; UP000002429; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:1990107; F:thiazole synthase activity; IEA:RHEA.
DR   GO; GO:0009229; P:thiamine diphosphate biosynthetic process; IEA:UniProtKB-UniPathway.
DR   CDD; cd04728; ThiG; 1.
DR   Gene3D; 3.20.20.70; -; 1.
DR   HAMAP; MF_00443; ThiG; 1.
DR   InterPro; IPR013785; Aldolase_TIM.
DR   InterPro; IPR033983; Thiazole_synthase_ThiG.
DR   InterPro; IPR008867; ThiG.
DR   PANTHER; PTHR34266; PTHR34266; 1.
DR   Pfam; PF05690; ThiG; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Reference proteome; Schiff base; Thiamine biosynthesis;
KW   Transferase.
FT   CHAIN           1..282
FT                   /note="Thiazole synthase"
FT                   /id="PRO_1000026034"
FT   ACT_SITE        113
FT                   /note="Schiff-base intermediate with DXP"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00443"
FT   BINDING         174
FT                   /ligand="1-deoxy-D-xylulose 5-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:57792"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00443"
FT   BINDING         201..202
FT                   /ligand="1-deoxy-D-xylulose 5-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:57792"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00443"
FT   BINDING         223..224
FT                   /ligand="1-deoxy-D-xylulose 5-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:57792"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00443"
SQ   SEQUENCE   282 AA;  30408 MW;  D6C1E1503681AF7A CRC64;
     MTFEPTETLR DPFVLYGESF ASRLLLGTAR YPSPATLQAA VEASRPAMIT VALRRQTAVG
     SGDGQTLGGE TFWQMLRTLG VPVLPNTAGC FTAQEVITTA MMAREVFETD WIKLELIGDD
     YTLQPDTLNM PAVAETLVKE GFKVLPYCTE DLVLCRRLLD VGCQALMPWA APIGTGRGAV
     NPHAMRTLRD RLPDTPLIVD AGLGLPSHAA QVLEWGYDGV LLNTAVAQSA YPVNMARAFA
     LAVEAGRTAY LAGPMPEREV AQASTPVVGM PFWHAEGAED RA