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THIG_CLOTE
ID   THIG_CLOTE              Reviewed;         255 AA.
AC   Q893R2;
DT   16-JUN-2003, integrated into UniProtKB/Swiss-Prot.
DT   16-JUN-2003, sequence version 1.
DT   03-AUG-2022, entry version 103.
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=CTC_01749;
OS   Clostridium tetani (strain Massachusetts / E88).
OC   Bacteria; Firmicutes; Clostridia; Eubacteriales; Clostridiaceae;
OC   Clostridium.
OX   NCBI_TaxID=212717;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Massachusetts / E88;
RX   PubMed=12552129; DOI=10.1073/pnas.0335853100;
RA   Brueggemann H., Baeumer S., Fricke W.F., Wiezer A., Liesegang H.,
RA   Decker I., Herzberg C., Martinez-Arias R., Merkl R., Henne A.,
RA   Gottschalk G.;
RT   "The genome sequence of Clostridium tetani, the causative agent of tetanus
RT   disease.";
RL   Proc. Natl. Acad. Sci. U.S.A. 100:1316-1321(2003).
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; AE015927; AAO36280.1; -; Genomic_DNA.
DR   RefSeq; WP_011099940.1; NC_004557.1.
DR   AlphaFoldDB; Q893R2; -.
DR   SMR; Q893R2; -.
DR   STRING; 212717.CTC_01749; -.
DR   EnsemblBacteria; AAO36280; AAO36280; CTC_01749.
DR   GeneID; 64179329; -.
DR   KEGG; ctc:CTC_01749; -.
DR   HOGENOM; CLU_062233_1_0_9; -.
DR   OMA; PHNFQLI; -.
DR   OrthoDB; 784095at2; -.
DR   UniPathway; UPA00060; -.
DR   Proteomes; UP000001412; 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..255
FT                   /note="Thiazole synthase"
FT                   /id="PRO_0000162808"
FT   ACT_SITE        96
FT                   /note="Schiff-base intermediate with DXP"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00443"
FT   BINDING         157
FT                   /ligand="1-deoxy-D-xylulose 5-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:57792"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00443"
FT   BINDING         184..185
FT                   /ligand="1-deoxy-D-xylulose 5-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:57792"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00443"
FT   BINDING         206..207
FT                   /ligand="1-deoxy-D-xylulose 5-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:57792"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00443"
SQ   SEQUENCE   255 AA;  27471 MW;  8C7B9D94AF51DD14 CRC64;
     MDKLNIGGKQ LESRLFIGTG KYGSNEILPK VIESSKSQVI TVALRRVDLN SREENILNYI
     KDDCVLLPNT SGARNAEEAV RLARLSKAAG CGNWIKIEAI SDNKYLLPDN YETIKATEIL
     AKEGFYVFPY MNPDLMDAKR FVAAGAAAVM PLGAPIGTNK GLKTEEMIKI LIEEIKEVPI
     IVDAGIGKPS DACKAMEMGA DAVLLNTAIA TAENPILMGE AFKNAVEAGR KAYLAGFGTE
     AKFANASSPL IGFLR
 
 
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