THIG_METNO
ID THIG_METNO Reviewed; 265 AA.
AC B8IPG1;
DT 28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT 03-MAR-2009, sequence version 1.
DT 03-AUG-2022, entry version 68.
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=Mnod_7516;
OS Methylobacterium nodulans (strain LMG 21967 / CNCM I-2342 / ORS 2060).
OC Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC Methylobacteriaceae; Methylobacterium.
OX NCBI_TaxID=460265;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=LMG 21967 / CNCM I-2342 / ORS 2060;
RG US DOE Joint Genome Institute;
RA Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA Bruce D., Goodwin L., Pitluck S., Sims D., Brettin T., Detter J.C., Han C.,
RA Larimer F., Land M., Hauser L., Kyrpides N., Ivanova N., Marx C.J.,
RA Richardson P.;
RT "Complete sequence of chromosome of Methylobacterium nodulans ORS 2060.";
RL Submitted (JAN-2009) 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}.
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DR EMBL; CP001349; ACL62253.1; -; Genomic_DNA.
DR RefSeq; WP_015933807.1; NC_011894.1.
DR AlphaFoldDB; B8IPG1; -.
DR SMR; B8IPG1; -.
DR STRING; 460265.Mnod_7516; -.
DR EnsemblBacteria; ACL62253; ACL62253; Mnod_7516.
DR KEGG; mno:Mnod_7516; -.
DR eggNOG; COG2022; Bacteria.
DR HOGENOM; CLU_062233_1_0_5; -.
DR OMA; PHNFQLI; -.
DR OrthoDB; 784095at2; -.
DR UniPathway; UPA00060; -.
DR Proteomes; UP000008207; 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..265
FT /note="Thiazole synthase"
FT /id="PRO_1000196873"
FT ACT_SITE 106
FT /note="Schiff-base intermediate with DXP"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00443"
FT BINDING 167
FT /ligand="1-deoxy-D-xylulose 5-phosphate"
FT /ligand_id="ChEBI:CHEBI:57792"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00443"
FT BINDING 193..194
FT /ligand="1-deoxy-D-xylulose 5-phosphate"
FT /ligand_id="ChEBI:CHEBI:57792"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00443"
FT BINDING 215..216
FT /ligand="1-deoxy-D-xylulose 5-phosphate"
FT /ligand_id="ChEBI:CHEBI:57792"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00443"
SQ SEQUENCE 265 AA; 27424 MW; DC4010540D5B1B69 CRC64;
MTIVAPLGRE ADDPLVIAGT ALRSRLLIGT AGYPTQAIMA EAVRASGAEV ATLSIRRVSL
RGHGSDTVSL LSGFRFLPNT AGCETARDAV MTAELAREAL GTNWIKVEVI GDRETLYPDV
AETIEATRQL VDAGFVVLPY CNDDPVVCSR LADLGAAAVM PMGSLIGSGM GVANPANLEL
ICRRSPVPVI VDAGIGTASD AVIAMELGAA AVLLNTAVAK ADDPVRMARA MRHAVEAGRL
AFGAGRIPRR ARAEPSSPQL GLVGS
