THIG_RHOPS
ID THIG_RHOPS Reviewed; 260 AA.
AC Q133T5;
DT 15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT 31-OCT-2006, sequence version 1.
DT 03-AUG-2022, entry version 83.
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=RPD_3430;
OS Rhodopseudomonas palustris (strain BisB5).
OC Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC Bradyrhizobiaceae; Rhodopseudomonas.
OX NCBI_TaxID=316057;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=BisB5;
RG US DOE Joint Genome Institute;
RA Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA Glavina del Rio T., Hammon N., Israni S., Dalin E., Tice H., Pitluck S.,
RA Chain P., Malfatti S., Shin M., Vergez L., Schmutz J., Larimer F., Land M.,
RA Hauser L., Pelletier D.A., Kyrpides N., Lykidis A., Oda Y., Harwood C.S.,
RA Richardson P.;
RT "Complete sequence of Rhodopseudomonas palustris BisB5.";
RL Submitted (MAR-2006) to the EMBL/GenBank/DDBJ databases.
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}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; CP000283; ABE40654.1; -; Genomic_DNA.
DR AlphaFoldDB; Q133T5; -.
DR SMR; Q133T5; -.
DR STRING; 316057.RPD_3430; -.
DR PRIDE; Q133T5; -.
DR EnsemblBacteria; ABE40654; ABE40654; RPD_3430.
DR KEGG; rpd:RPD_3430; -.
DR eggNOG; COG2022; Bacteria.
DR HOGENOM; CLU_062233_1_0_5; -.
DR OMA; PHNFQLI; -.
DR OrthoDB; 784095at2; -.
DR BioCyc; RPAL316057:RPD_RS17250-MON; -.
DR UniPathway; UPA00060; -.
DR Proteomes; UP000001818; 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..260
FT /note="Thiazole synthase"
FT /id="PRO_1000026038"
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 260 AA; 27811 MW; 27F424EC100DFC38 CRC64;
MVKFYDRDIS SRLLIGSALY PSPAIMQDAI RDSGAEIVTV SLRRETAGGK AGDQFWSLIR
ELGVTVLPNT AGCRSVREAV TTAKLARELF ATSWIKLEVI ADNDTLQPDV VGLVEAAQIL
IKDGFEVFPY CTEDLSVALR LVDAGCRVIM PWAAPIGSAR GITNRDALKL LRDRLPDITL
VVDAGLGAPS HAAEAMELGY DAVLLNTAIA KAEDPVAMAR AFRLAVDAGR LGYQAGLMGA
RDFASPSTPV IGTPFWHAVS
