ID A4TVJ6_9PROT Unreviewed; 327 AA.
AC A4TVJ6;
DT 15-MAY-2007, integrated into UniProtKB/TrEMBL.
DT 15-MAY-2007, sequence version 1.
DT 24-JAN-2024, entry version 72.
DE RecName: Full=Thiazole synthase {ECO:0000256|ARBA:ARBA00011960, ECO:0000256|HAMAP-Rule:MF_00443};
DE EC=2.8.1.10 {ECO:0000256|ARBA:ARBA00011960, ECO:0000256|HAMAP-Rule:MF_00443};
GN Name=thiG {ECO:0000256|HAMAP-Rule:MF_00443};
GN ORFNames=MGR_0920 {ECO:0000313|EMBL:CAM74653.1};
OS Magnetospirillum gryphiswaldense.
OC Bacteria; Pseudomonadota; Alphaproteobacteria; Rhodospirillales;
OC Rhodospirillaceae; Magnetospirillum.
OX NCBI_TaxID=55518 {ECO:0000313|EMBL:CAM74653.1};
RN [1] {ECO:0000313|EMBL:CAM74653.1}
RP NUCLEOTIDE SEQUENCE.
RC STRAIN=MSR-1 {ECO:0000313|EMBL:CAM74653.1};
RX PubMed=17449609; DOI=10.1128/JB.00119-07;
RA Richter M., Kube M., Bazylinski D.A., Lombardot T., Gloeckner F.O.,
RA Reinhardt R., Schueler D.;
RT "Comparative genome analysis of four magnetotactic bacteria reveals a
RT complex set of group-specific genes implicated in magnetosome
RT biomineralization and function.";
RL J. Bacteriol. 189:4899-4910(2007).
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:0000256|ARBA:ARBA00002834,
CC ECO:0000256|HAMAP-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;
CC Evidence={ECO:0000256|ARBA:ARBA00000887, ECO:0000256|HAMAP-
CC Rule:MF_00443};
CC -!- PATHWAY: Cofactor biosynthesis; thiamine diphosphate biosynthesis.
CC {ECO:0000256|ARBA:ARBA00004948, ECO:0000256|HAMAP-Rule:MF_00443}.
CC -!- SUBUNIT: Homotetramer. Forms heterodimers with either ThiH or ThiS.
CC {ECO:0000256|HAMAP-Rule:MF_00443}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00443}.
CC -!- SIMILARITY: Belongs to the ThiG family. {ECO:0000256|HAMAP-
CC Rule:MF_00443}.
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DR EMBL; CU459003; CAM74653.1; -; Genomic_DNA.
DR AlphaFoldDB; A4TVJ6; -.
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 CDD; cd00565; Ubl_ThiS; 1.
DR Gene3D; 3.10.20.30; -; 1.
DR Gene3D; 3.20.20.70; Aldolase class I; 1.
DR HAMAP; MF_00443; ThiG; 1.
DR InterPro; IPR013785; Aldolase_TIM.
DR InterPro; IPR012675; Beta-grasp_dom_sf.
DR InterPro; IPR016155; Mopterin_synth/thiamin_S_b.
DR InterPro; IPR010035; Thi_S.
DR InterPro; IPR033983; Thiazole_synthase_ThiG.
DR InterPro; IPR008867; ThiG.
DR InterPro; IPR003749; ThiS/MoaD-like.
DR NCBIfam; TIGR01683; thiS; 1.
DR PANTHER; PTHR34266; THIAZOLE SYNTHASE; 1.
DR PANTHER; PTHR34266:SF2; THIAZOLE SYNTHASE; 1.
DR Pfam; PF05690; ThiG; 1.
DR Pfam; PF02597; ThiS; 1.
DR SUPFAM; SSF54285; MoaD/ThiS; 1.
DR SUPFAM; SSF110399; ThiG-like; 1.
PE 3: Inferred from homology;
KW Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00443};
KW Schiff base {ECO:0000256|ARBA:ARBA00023270, ECO:0000256|HAMAP-
KW Rule:MF_00443};
KW Thiamine biosynthesis {ECO:0000256|ARBA:ARBA00022977, ECO:0000256|HAMAP-
KW Rule:MF_00443};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_00443}.
FT DOMAIN 78..322
FT /note="Thiazole synthase ThiG"
FT /evidence="ECO:0000259|Pfam:PF05690"
FT ACT_SITE 170
FT /note="Schiff-base intermediate with DXP"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00443"
FT BINDING 231
FT /ligand="1-deoxy-D-xylulose 5-phosphate"
FT /ligand_id="ChEBI:CHEBI:57792"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00443"
FT BINDING 257..258
FT /ligand="1-deoxy-D-xylulose 5-phosphate"
FT /ligand_id="ChEBI:CHEBI:57792"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00443"
FT BINDING 279..280
FT /ligand="1-deoxy-D-xylulose 5-phosphate"
FT /ligand_id="ChEBI:CHEBI:57792"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00443"
SQ SEQUENCE 327 AA; 34768 MW; 7843A6BF6D2EB81E CRC64;
MKVMINGEER ALAAAQSVEA VLLGLGIDPR KVAVERNLEI VPKSTYAQVM VGDGDRLEIV
HFIGGGSADV VSDDYFEVAG RKFRSRLLVG TGKYKDFDET AKAIAESGAE IVTVAVRRVN
LSDPSQPMLV DYVSPKQYTY LPNTAGCFTA DDAVRTLRLA REAGGWDLVK LEVLGDQKTL
YPNMPETLKA AEALIKDGFK VMVYCSDDPI QAKMLEDMGC VAIMPLGSLI GSGLGIINPI
NIRLIKESAK VPVLVDAGVG TASDAAVAME LGCDGVLMNT AIAAAKDPIG MAKAMRLAVE
AGRLAYLSGR MPKKMYADPS SPLAGLI
//
