ID   THIG_NEIMA              Reviewed;         262 AA.
AC   Q9JWI4; A1IPI8;
DT   29-AUG-2001, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2000, sequence version 1.
DT   03-AUG-2022, entry version 109.
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=NMA0361;
OS   Neisseria meningitidis serogroup A / serotype 4A (strain DSM 15465 /
OS   Z2491).
OC   Bacteria; Proteobacteria; Betaproteobacteria; Neisseriales; Neisseriaceae;
OC   Neisseria.
OX   NCBI_TaxID=122587;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 15465 / Z2491;
RX   PubMed=10761919; DOI=10.1038/35006655;
RA   Parkhill J., Achtman M., James K.D., Bentley S.D., Churcher C.M.,
RA   Klee S.R., Morelli G., Basham D., Brown D., Chillingworth T., Davies R.M.,
RA   Davis P., Devlin K., Feltwell T., Hamlin N., Holroyd S., Jagels K.,
RA   Leather S., Moule S., Mungall K.L., Quail M.A., Rajandream M.A.,
RA   Rutherford K.M., Simmonds M., Skelton J., Whitehead S., Spratt B.G.,
RA   Barrell B.G.;
RT   "Complete DNA sequence of a serogroup A strain of Neisseria meningitidis
RT   Z2491.";
RL   Nature 404:502-506(2000).
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; AL157959; CAM07657.1; -; Genomic_DNA.
DR   PIR; C82032; C82032.
DR   RefSeq; WP_002246519.1; NC_003116.1.
DR   AlphaFoldDB; Q9JWI4; -.
DR   SMR; Q9JWI4; -.
DR   EnsemblBacteria; CAM07657; CAM07657; NMA0361.
DR   KEGG; nma:NMA0361; -.
DR   HOGENOM; CLU_062233_1_0_4; -.
DR   OMA; PHNFQLI; -.
DR   BioCyc; NMEN122587:NMA_RS01845-MON; -.
DR   UniPathway; UPA00060; -.
DR   Proteomes; UP000000626; Chromosome.
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..262
FT                   /note="Thiazole synthase"
FT                   /id="PRO_0000162834"
FT   REGION          243..262
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   ACT_SITE        97
FT                   /note="Schiff-base intermediate with DXP"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00443"
FT   BINDING         158
FT                   /ligand="1-deoxy-D-xylulose 5-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:57792"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00443"
FT   BINDING         185..186
FT                   /ligand="1-deoxy-D-xylulose 5-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:57792"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00443"
FT   BINDING         207..208
FT                   /ligand="1-deoxy-D-xylulose 5-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:57792"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00443"
SQ   SEQUENCE   262 AA;  28155 MW;  B2484FE6B7EE476D CRC64;
     MLTLYSETFP SRLLLGTAAY PTPEILKQSV RTARPAMITV SLRRAGCGGE AHGQGFWSLL
     QETGVPVLPN TAGCQSVQEA VTTAQMAREV FETDWIKLEL IGDDDTLQPD VFQLVEAAEI
     LIKDGFKVLP YCTEDLIACR RLLDAGCQAL MPWAAPIGTG LGAVHAYALN VLRERLPDTP
     LIIDAGLGLP SQAAQVMEWG FDGVLLNTAV SRSGDPVNMA RAFALAVESG RLAFEAGPVE
     ARDKAQASTP TVGQPFWHSA EY