ID A0A0A8L3D5_9SACH Unreviewed; 324 AA.
AC A0A0A8L3D5;
DT 04-MAR-2015, integrated into UniProtKB/TrEMBL.
DT 04-MAR-2015, sequence version 1.
DT 27-MAR-2024, entry version 29.
DE RecName: Full=Thiamine thiazole synthase {ECO:0000256|HAMAP-Rule:MF_03158};
DE AltName: Full=Thiazole biosynthetic enzyme {ECO:0000256|HAMAP-Rule:MF_03158};
DE EC=2.4.2.60 {ECO:0000256|HAMAP-Rule:MF_03158};
GN Name=THI4 {ECO:0000256|HAMAP-Rule:MF_03158};
GN ORFNames=KLDO_g1700 {ECO:0000313|EMBL:CDO93401.1};
OS Kluyveromyces dobzhanskii CBS 2104.
OC Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes;
OC Saccharomycetales; Saccharomycetaceae; Kluyveromyces.
OX NCBI_TaxID=1427455 {ECO:0000313|EMBL:CDO93401.1, ECO:0000313|Proteomes:UP000031516};
RN [1] {ECO:0000313|EMBL:CDO93401.1, ECO:0000313|Proteomes:UP000031516}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CBS2104 {ECO:0000313|Proteomes:UP000031516};
RA Nystedt B., Astrom S.;
RT "The genome of Kluyveromyces dobzhanskii.";
RL Submitted (MAR-2014) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Involved in biosynthesis of the thiamine precursor thiazole.
CC Catalyzes the conversion of NAD and glycine to adenosine diphosphate 5-
CC (2-hydroxyethyl)-4-methylthiazole-2-carboxylic acid (ADT), an
CC adenylated thiazole intermediate. The reaction includes an iron-
CC dependent sulfide transfer from a conserved cysteine residue of the
CC protein to a thiazole intermediate. The enzyme can only undergo a
CC single turnover, which suggests it is a suicide enzyme. May have
CC additional roles in adaptation to various stress conditions and in DNA
CC damage tolerance. {ECO:0000256|HAMAP-Rule:MF_03158}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=[ADP-thiazole synthase]-L-cysteine + glycine + NAD(+) = [ADP-
CC thiazole synthase]-dehydroalanine + ADP-5-ethyl-4-methylthiazole-2-
CC carboxylate + 2 H(+) + 3 H2O + nicotinamide; Xref=Rhea:RHEA:55708,
CC Rhea:RHEA-COMP:14264, Rhea:RHEA-COMP:14265, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:17154, ChEBI:CHEBI:29950,
CC ChEBI:CHEBI:57305, ChEBI:CHEBI:57540, ChEBI:CHEBI:90873,
CC ChEBI:CHEBI:139151; EC=2.4.2.60; Evidence={ECO:0000256|HAMAP-
CC Rule:MF_03158};
CC -!- COFACTOR:
CC Name=Fe cation; Xref=ChEBI:CHEBI:24875;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_03158};
CC Note=Binds 1 Fe cation per subunit. {ECO:0000256|HAMAP-Rule:MF_03158};
CC -!- SUBUNIT: Homooctamer. {ECO:0000256|HAMAP-Rule:MF_03158}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_03158}.
CC Nucleus {ECO:0000256|HAMAP-Rule:MF_03158}.
CC -!- PTM: During the catalytic reaction, a sulfide is transferred from Cys-
CC 203 to a reaction intermediate, generating a dehydroalanine residue.
CC {ECO:0000256|HAMAP-Rule:MF_03158}.
CC -!- SIMILARITY: Belongs to the THI4 family. {ECO:0000256|HAMAP-
CC Rule:MF_03158}.
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:CDO93401.1}.
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DR EMBL; CCBQ010000024; CDO93401.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A0A8L3D5; -.
DR OrthoDB; 1382331at2759; -.
DR Proteomes; UP000031516; Unassembled WGS sequence.
DR GO; GO:0005829; C:cytosol; IEA:UniProtKB-UniRule.
DR GO; GO:0005634; C:nucleus; IEA:UniProtKB-SubCell.
DR GO; GO:0005506; F:iron ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0016763; F:pentosyltransferase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0009228; P:thiamine biosynthetic process; IEA:UniProtKB-UniRule.
DR GO; GO:0052837; P:thiazole biosynthetic process; IEA:UniProtKB-UniRule.
DR Gene3D; 6.10.250.2840; -; 1.
DR Gene3D; 3.50.50.60; FAD/NAD(P)-binding domain; 1.
DR HAMAP; MF_03158; THI4; 1.
DR InterPro; IPR036188; FAD/NAD-bd_sf.
DR InterPro; IPR027495; Sti35.
DR InterPro; IPR002922; Thi4_fam.
DR NCBIfam; TIGR00292; sulfide-dependent adenosine diphosphate thiazole synthase; 1.
DR PANTHER; PTHR43422; THIAMINE THIAZOLE SYNTHASE; 1.
DR PANTHER; PTHR43422:SF3; THIAMINE THIAZOLE SYNTHASE; 1.
DR Pfam; PF01946; Thi4; 1.
DR SUPFAM; SSF51905; FAD/NAD(P)-binding domain; 1.
PE 3: Inferred from homology;
KW Cytoplasm {ECO:0000256|HAMAP-Rule:MF_03158};
KW Iron {ECO:0000256|ARBA:ARBA00023004, ECO:0000256|HAMAP-Rule:MF_03158};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_03158};
KW NAD {ECO:0000256|ARBA:ARBA00023027, ECO:0000256|HAMAP-Rule:MF_03158};
KW Nucleus {ECO:0000256|HAMAP-Rule:MF_03158};
KW Thiamine biosynthesis {ECO:0000256|ARBA:ARBA00022977, ECO:0000256|HAMAP-
KW Rule:MF_03158}; Transferase {ECO:0000256|HAMAP-Rule:MF_03158}.
FT BINDING 73
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03158"
FT BINDING 94..95
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03158"
FT BINDING 102
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03158"
FT BINDING 167
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03158"
FT BINDING 205
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03158"
FT BINDING 235
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03158"
FT BINDING 289
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03158"
FT BINDING 299..301
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03158"
FT MOD_RES 203
FT /note="2,3-didehydroalanine (Cys)"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03158"
SQ SEQUENCE 324 AA; 35073 MW; B763F4846C815EB4 CRC64;
MSYTQVQSQT KISVKSQDVK HALSDIVKEQ DWSDFSFAPI REATVSRAMT SRYFKDMDKF
AVSDVVIIGA GSSGLSAAYV IAKNRPDLKI AIIEANVAPG GGCWLGGQLF SAMIMRKPAH
LFLDELNIPY EDEGHYVVVK HAALFMSTVL SEVLKFPNVK MFNATAVEDL VTRPAEDGTE
HVNVAGVVTN WTLVTMNHDT QSCMDPNVIE LSGYKDNGDR DLSQKHGVIL SCCGHDGPFG
AFTVKRMASI DSSKSYAGMK GLDMNRAEDG VVKNAGAYDK VGSVYFAGME VAEHAGLNRM
GPTFGAMAVS GIKAAEDILK HFAE
//
