THIG_PSEA8
ID THIG_PSEA8 Reviewed; 265 AA.
AC B7V3W7;
DT 14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT 10-FEB-2009, sequence version 1.
DT 03-AUG-2022, entry version 66.
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=PLES_03781;
OS Pseudomonas aeruginosa (strain LESB58).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Pseudomonadales;
OC Pseudomonadaceae; Pseudomonas.
OX NCBI_TaxID=557722;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=LESB58;
RX PubMed=19047519; DOI=10.1101/gr.086082.108;
RA Winstanley C., Langille M.G.I., Fothergill J.L., Kukavica-Ibrulj I.,
RA Paradis-Bleau C., Sanschagrin F., Thomson N.R., Winsor G.L., Quail M.A.,
RA Lennard N., Bignell A., Clarke L., Seeger K., Saunders D., Harris D.,
RA Parkhill J., Hancock R.E.W., Brinkman F.S.L., Levesque R.C.;
RT "Newly introduced genomic prophage islands are critical determinants of in
RT vivo competitiveness in the Liverpool epidemic strain of Pseudomonas
RT aeruginosa.";
RL Genome Res. 19:12-23(2009).
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; FM209186; CAW25105.1; -; Genomic_DNA.
DR RefSeq; WP_003084517.1; NC_011770.1.
DR AlphaFoldDB; B7V3W7; -.
DR SMR; B7V3W7; -.
DR KEGG; pag:PLES_03781; -.
DR HOGENOM; CLU_062233_1_1_6; -.
DR OMA; PHNFQLI; -.
DR UniPathway; UPA00060; -.
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..265
FT /note="Thiazole synthase"
FT /id="PRO_1000196886"
FT ACT_SITE 107
FT /note="Schiff-base intermediate with DXP"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00443"
FT BINDING 168
FT /ligand="1-deoxy-D-xylulose 5-phosphate"
FT /ligand_id="ChEBI:CHEBI:57792"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00443"
FT BINDING 194..195
FT /ligand="1-deoxy-D-xylulose 5-phosphate"
FT /ligand_id="ChEBI:CHEBI:57792"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00443"
FT BINDING 216..217
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; 28235 MW; EE3F74F94F0501E2 CRC64;
MSQASSTDTP FVIAGRTYGS RLLVGTGKYK DLDETRRAIE ASGAEIVTVA VRRTNIGQNP
DEPNLLDVIP PDRYTILPNT AGCYDAVEAV RTCRLARELL DGHNLVKLEV LADQKTLFPN
VVETLKAAEQ LVKDGFDVMV YTSDDPIIAR QLAEIGCIAV MPLAGLIGSG LGICNPYNLR
IILEEAKVPV LVDAGVGTAS DAAIAMELGC EAVLMNTAIA HAKDPVMMAE AMKHAIVAGR
LAYLAGRMPR KLYASASSPL DGLID