ID A0A0Q4FIN7_9SPHN Unreviewed; 333 AA.
AC A0A0Q4FIN7;
DT 20-JAN-2016, integrated into UniProtKB/TrEMBL.
DT 20-JAN-2016, sequence version 1.
DT 24-JAN-2024, entry version 31.
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=ASE75_07645 {ECO:0000313|EMBL:KQM64933.1};
OS Sphingomonas sp. Leaf17.
OC Bacteria; Pseudomonadota; Alphaproteobacteria; Sphingomonadales;
OC Sphingomonadaceae; Sphingomonas.
OX NCBI_TaxID=1735683 {ECO:0000313|EMBL:KQM64933.1, ECO:0000313|Proteomes:UP000051777};
RN [1] {ECO:0000313|EMBL:KQM64933.1, ECO:0000313|Proteomes:UP000051777}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Leaf17 {ECO:0000313|EMBL:KQM64933.1,
RC ECO:0000313|Proteomes:UP000051777};
RA Gilbert D.G.;
RL Submitted (OCT-2015) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:KQM64933.1, ECO:0000313|Proteomes:UP000051777}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Leaf17 {ECO:0000313|EMBL:KQM64933.1,
RC ECO:0000313|Proteomes:UP000051777};
RA Schulze-Lefert P.;
RT "Functional overlap of the Arabidopsis leaf and root microbiotas.";
RL Submitted (NOV-2015) 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: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}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:KQM64933.1}.
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DR EMBL; LMKL01000005; KQM64933.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A0Q4FIN7; -.
DR STRING; 1735683.ASE75_07645; -.
DR OrthoDB; 9805935at2; -.
DR UniPathway; UPA00060; -.
DR Proteomes; UP000051777; Unassembled WGS sequence.
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 Reference proteome {ECO:0000313|Proteomes:UP000051777};
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 82..328
FT /note="Thiazole synthase ThiG"
FT /evidence="ECO:0000259|Pfam:PF05690"
FT ACT_SITE 174
FT /note="Schiff-base intermediate with DXP"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00443"
FT BINDING 235
FT /ligand="1-deoxy-D-xylulose 5-phosphate"
FT /ligand_id="ChEBI:CHEBI:57792"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00443"
FT BINDING 263..264
FT /ligand="1-deoxy-D-xylulose 5-phosphate"
FT /ligand_id="ChEBI:CHEBI:57792"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00443"
FT BINDING 285..286
FT /ligand="1-deoxy-D-xylulose 5-phosphate"
FT /ligand_id="ChEBI:CHEBI:57792"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00443"
SQ SEQUENCE 333 AA; 34915 MW; 7E483EDF9146EED7 CRC64;
MAHTDGTVSI TVNGEHKRVG AGLSLAALAS ELGLAPEKIA VERNLEVVPR STLAQVMVED
GDALEIVHFV GGGDHQDDSW TVAGRTFRSR LIVGTGKYKD FAQNAAALEA SGAEIVTVAV
RRVNVSDRNA PMLTDFIDPK KVTYLPNTAG CFDAESAIRT LRLAREAGGW DLVKLEVLGE
AKTLYPDMHE TLRATEVLAK EGFLPMVYCV DDPIAAKRLE NAGAVAIMPL GAPIGSGLGI
QNRITIRLIV EGAGVGIPVL VDAGVGTASD AAVAMELGCE GVLMNTAIAE AKDPVMMAAA
MKAAVESGRL AYRAGRMGLR RYADPSSPLA GLI
//
