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THIG_STRGG
ID   THIG_STRGG              Reviewed;         264 AA.
AC   B1VZU6;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   20-MAY-2008, sequence version 1.
DT   03-AUG-2022, entry version 77.
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=SGR_5392;
OS   Streptomyces griseus subsp. griseus (strain JCM 4626 / NBRC 13350).
OC   Bacteria; Actinobacteria; Streptomycetales; Streptomycetaceae;
OC   Streptomyces.
OX   NCBI_TaxID=455632;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=JCM 4626 / NBRC 13350;
RX   PubMed=18375553; DOI=10.1128/jb.00204-08;
RA   Ohnishi Y., Ishikawa J., Hara H., Suzuki H., Ikenoya M., Ikeda H.,
RA   Yamashita A., Hattori M., Horinouchi S.;
RT   "Genome sequence of the streptomycin-producing microorganism Streptomyces
RT   griseus IFO 13350.";
RL   J. Bacteriol. 190:4050-4060(2008).
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; AP009493; BAG22221.1; -; Genomic_DNA.
DR   RefSeq; WP_003969671.1; NC_010572.1.
DR   AlphaFoldDB; B1VZU6; -.
DR   SMR; B1VZU6; -.
DR   STRING; 455632.SGR_5392; -.
DR   EnsemblBacteria; BAG22221; BAG22221; SGR_5392.
DR   GeneID; 6214750; -.
DR   KEGG; sgr:SGR_5392; -.
DR   eggNOG; COG2022; Bacteria.
DR   HOGENOM; CLU_062233_1_0_11; -.
DR   OMA; PHNFQLI; -.
DR   OrthoDB; 784095at2; -.
DR   UniPathway; UPA00060; -.
DR   Proteomes; UP000001685; 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; Schiff base; Thiamine biosynthesis; Transferase.
FT   CHAIN           1..264
FT                   /note="Thiazole synthase"
FT                   /id="PRO_1000196907"
FT   ACT_SITE        98
FT                   /note="Schiff-base intermediate with DXP"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00443"
FT   BINDING         159
FT                   /ligand="1-deoxy-D-xylulose 5-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:57792"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00443"
FT   BINDING         185..186
FT                   /ligand="1-deoxy-D-xylulose 5-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:57792"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00443"
FT   BINDING         207..208
FT                   /ligand="1-deoxy-D-xylulose 5-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:57792"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00443"
SQ   SEQUENCE   264 AA;  27605 MW;  5760AABF0C9AFC4A CRC64;
     MSDDVFTLGP AAFGSRLIMG TGGAPSLEVL ERSLIASGTE LTTVAMRRLD PTVQGSVLSV
     LERLSIRVLP NTAGCFTAGE AVLTARLARE ALGTDWVKLE VVADERTLLP DPIELLDAAE
     VLVDDGFTVL PYTNDDPVLA RKLEDVGCAA IMPLGSPIGS GLGIRNPHNF ELIVERAGVP
     VILDAGAGTA SDAAQAMELG CAAVMLASAV TRAQEPELMA GAMRHAVEGG RLAYRAGRIP
     RRHFAEASSP VAGRAVLDPE RPAF
 
 
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