THI4_METTP
ID THI4_METTP Reviewed; 262 AA.
AC A0B880;
DT 11-SEP-2007, integrated into UniProtKB/Swiss-Prot.
DT 11-SEP-2007, sequence version 2.
DT 03-AUG-2022, entry version 77.
DE RecName: Full=Thiamine thiazole synthase {ECO:0000255|HAMAP-Rule:MF_00304};
DE EC=2.4.2.59 {ECO:0000255|HAMAP-Rule:MF_00304};
GN Name=thi4 {ECO:0000255|HAMAP-Rule:MF_00304}; OrderedLocusNames=Mthe_1121;
OS Methanothrix thermoacetophila (strain DSM 6194 / JCM 14653 / NBRC 101360 /
OS PT) (Methanosaeta thermophila).
OC Archaea; Euryarchaeota; Stenosarchaea group; Methanomicrobia;
OC Methanotrichales; Methanotrichaceae; Methanothrix.
OX NCBI_TaxID=349307;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 6194 / JCM 14653 / NBRC 101360 / PT;
RG US DOE Joint Genome Institute;
RA Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA Glavina del Rio T., Hammon N., Israni S., Pitluck S., Chain P.,
RA Malfatti S., Shin M., Vergez L., Schmutz J., Larimer F., Land M.,
RA Hauser L., Kyrpides N., Kim E., Smith K.S., Ingram-Smith C., Richardson P.;
RT "Complete sequence of Methanosaeta thermophila PT.";
RL Submitted (OCT-2006) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Involved in the biosynthesis of the thiazole moiety of
CC thiamine. Catalyzes the conversion of NAD and glycine to adenosine
CC diphosphate 5-(2-hydroxyethyl)-4-methylthiazole-2-carboxylate (ADT), an
CC adenylated thiazole intermediate, using free sulfide as a source of
CC sulfur. {ECO:0000255|HAMAP-Rule:MF_00304}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=glycine + hydrogen sulfide + NAD(+) = ADP-5-ethyl-4-
CC methylthiazole-2-carboxylate + H(+) + 3 H2O + nicotinamide;
CC Xref=Rhea:RHEA:55704, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:17154, ChEBI:CHEBI:29919, ChEBI:CHEBI:57305,
CC ChEBI:CHEBI:57540, ChEBI:CHEBI:139151; EC=2.4.2.59;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00304};
CC -!- COFACTOR:
CC Name=Fe(2+); Xref=ChEBI:CHEBI:29033;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00304};
CC -!- PATHWAY: Cofactor biosynthesis; thiamine diphosphate biosynthesis.
CC {ECO:0000255|HAMAP-Rule:MF_00304}.
CC -!- SUBUNIT: Homooctamer; tetramer of dimers. {ECO:0000255|HAMAP-
CC Rule:MF_00304}.
CC -!- SIMILARITY: Belongs to the THI4 family. {ECO:0000255|HAMAP-
CC Rule:MF_00304}.
CC -!- SEQUENCE CAUTION:
CC Sequence=ABK14904.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR EMBL; CP000477; ABK14904.1; ALT_INIT; Genomic_DNA.
DR AlphaFoldDB; A0B880; -.
DR SMR; A0B880; -.
DR STRING; 349307.Mthe_1121; -.
DR EnsemblBacteria; ABK14904; ABK14904; Mthe_1121.
DR KEGG; mtp:Mthe_1121; -.
DR HOGENOM; CLU_053727_2_0_2; -.
DR UniPathway; UPA00060; -.
DR Proteomes; UP000000674; Chromosome.
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:0009229; P:thiamine diphosphate biosynthetic process; IEA:UniProtKB-UniPathway.
DR GO; GO:0052837; P:thiazole biosynthetic process; IEA:UniProtKB-UniRule.
DR Gene3D; 3.50.50.60; -; 1.
DR HAMAP; MF_00304; Thi4; 1.
DR InterPro; IPR036188; FAD/NAD-bd_sf.
DR InterPro; IPR002922; Thi4_fam.
DR InterPro; IPR022828; Thi4_prok.
DR SUPFAM; SSF51905; SSF51905; 1.
DR TIGRFAMs; TIGR00292; TIGR00292; 1.
PE 3: Inferred from homology;
KW Iron; Metal-binding; NAD; Reference proteome; Thiamine biosynthesis;
KW Transferase.
FT CHAIN 1..262
FT /note="Thiamine thiazole synthase"
FT /id="PRO_0000302884"
FT BINDING 36
FT /ligand="NAD(+)"
FT /ligand_id="ChEBI:CHEBI:57540"
FT /ligand_note="ligand shared between two adjacent protomers"
FT /note="in other chain"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00304"
FT BINDING 55..56
FT /ligand="NAD(+)"
FT /ligand_id="ChEBI:CHEBI:57540"
FT /ligand_note="ligand shared between two adjacent protomers"
FT /note="in other chain"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00304"
FT BINDING 63
FT /ligand="NAD(+)"
FT /ligand_id="ChEBI:CHEBI:57540"
FT /ligand_note="ligand shared between two adjacent protomers"
FT /note="in other chain"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00304"
FT BINDING 127
FT /ligand="NAD(+)"
FT /ligand_id="ChEBI:CHEBI:57540"
FT /ligand_note="ligand shared between two adjacent protomers"
FT /note="in other chain"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00304"
FT BINDING 154..156
FT /ligand="NAD(+)"
FT /ligand_id="ChEBI:CHEBI:57540"
FT /ligand_note="ligand shared between two adjacent protomers"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00304"
FT BINDING 156
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /ligand_note="ligand shared between two adjacent protomers"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00304"
FT BINDING 171
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /ligand_note="ligand shared between two adjacent protomers"
FT /note="in other chain"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00304"
FT BINDING 224
FT /ligand="NAD(+)"
FT /ligand_id="ChEBI:CHEBI:57540"
FT /ligand_note="ligand shared between two adjacent protomers"
FT /note="in other chain"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00304"
FT BINDING 234
FT /ligand="glycine"
FT /ligand_id="ChEBI:CHEBI:57305"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00304"
SQ SEQUENCE 262 AA; 27766 MW; 022B4E14E7A9BE5C CRC64;
MALDEVKITR AIVESYLESF LKCTDVDVAL VGAGPANLVA AKRLAEADVR VVLFEKRLSV
GGGLWGGGMM FPRIVVQKEA CRILDEYDIW YREFEEGYYV ADSIEVVAKL TAGAIDAGAE
LINLVSVEDV MIREGDRIVG LVINWTAADM AGIHVDPLAI RARVVIDGTG HDAAVCRVVQ
KKIPGAIVGE SGVIGEKPMW AALGEKIVVD ATREVYPGLI VAGMAATTVA AGPRMGPIFG
GMLLSGEKAA SIALEKLAQS VD
