THIC_BACTN
ID THIC_BACTN Reviewed; 565 AA.
AC Q8AA15;
DT 24-MAY-2004, integrated into UniProtKB/Swiss-Prot.
DT 01-JUN-2003, sequence version 1.
DT 03-AUG-2022, entry version 108.
DE RecName: Full=Phosphomethylpyrimidine synthase {ECO:0000255|HAMAP-Rule:MF_00089};
DE EC=4.1.99.17 {ECO:0000255|HAMAP-Rule:MF_00089};
DE AltName: Full=Hydroxymethylpyrimidine phosphate synthase {ECO:0000255|HAMAP-Rule:MF_00089};
DE Short=HMP-P synthase {ECO:0000255|HAMAP-Rule:MF_00089};
DE Short=HMP-phosphate synthase {ECO:0000255|HAMAP-Rule:MF_00089};
DE Short=HMPP synthase {ECO:0000255|HAMAP-Rule:MF_00089};
DE AltName: Full=Thiamine biosynthesis protein ThiC {ECO:0000255|HAMAP-Rule:MF_00089};
GN Name=thiC {ECO:0000255|HAMAP-Rule:MF_00089}; OrderedLocusNames=BT_0650;
OS Bacteroides thetaiotaomicron (strain ATCC 29148 / DSM 2079 / JCM 5827 /
OS CCUG 10774 / NCTC 10582 / VPI-5482 / E50).
OC Bacteria; Bacteroidetes; Bacteroidia; Bacteroidales; Bacteroidaceae;
OC Bacteroides.
OX NCBI_TaxID=226186;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 29148 / DSM 2079 / JCM 5827 / CCUG 10774 / NCTC 10582 /
RC VPI-5482 / E50;
RX PubMed=12663928; DOI=10.1126/science.1080029;
RA Xu J., Bjursell M.K., Himrod J., Deng S., Carmichael L.K., Chiang H.C.,
RA Hooper L.V., Gordon J.I.;
RT "A genomic view of the human-Bacteroides thetaiotaomicron symbiosis.";
RL Science 299:2074-2076(2003).
CC -!- FUNCTION: Catalyzes the synthesis of the hydroxymethylpyrimidine
CC phosphate (HMP-P) moiety of thiamine from aminoimidazole ribotide (AIR)
CC in a radical S-adenosyl-L-methionine (SAM)-dependent reaction.
CC {ECO:0000255|HAMAP-Rule:MF_00089}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=5-amino-1-(5-phospho-beta-D-ribosyl)imidazole + S-adenosyl-L-
CC methionine = 4-amino-2-methyl-5-(phosphooxymethyl)pyrimidine + 5'-
CC deoxyadenosine + CO + formate + 3 H(+) + L-methionine;
CC Xref=Rhea:RHEA:24840, ChEBI:CHEBI:15378, ChEBI:CHEBI:15740,
CC ChEBI:CHEBI:17245, ChEBI:CHEBI:17319, ChEBI:CHEBI:57844,
CC ChEBI:CHEBI:58354, ChEBI:CHEBI:59789, ChEBI:CHEBI:137981;
CC EC=4.1.99.17; Evidence={ECO:0000255|HAMAP-Rule:MF_00089};
CC -!- COFACTOR:
CC Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00089};
CC Note=Binds 1 [4Fe-4S] cluster per subunit. The cluster is coordinated
CC with 3 cysteines and an exchangeable S-adenosyl-L-methionine.
CC {ECO:0000255|HAMAP-Rule:MF_00089};
CC -!- PATHWAY: Cofactor biosynthesis; thiamine diphosphate biosynthesis.
CC {ECO:0000255|HAMAP-Rule:MF_00089}.
CC -!- SIMILARITY: Belongs to the ThiC family. {ECO:0000255|HAMAP-
CC Rule:MF_00089}.
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DR EMBL; AE015928; AAO75757.1; -; Genomic_DNA.
DR RefSeq; NP_809563.1; NC_004663.1.
DR RefSeq; WP_011107372.1; NC_004663.1.
DR AlphaFoldDB; Q8AA15; -.
DR SMR; Q8AA15; -.
DR STRING; 226186.BT_0650; -.
DR PaxDb; Q8AA15; -.
DR PRIDE; Q8AA15; -.
DR EnsemblBacteria; AAO75757; AAO75757; BT_0650.
DR GeneID; 60926611; -.
DR KEGG; bth:BT_0650; -.
DR PATRIC; fig|226186.12.peg.661; -.
DR eggNOG; COG0422; Bacteria.
DR HOGENOM; CLU_013181_2_1_10; -.
DR InParanoid; Q8AA15; -.
DR OMA; TWELFRD; -.
DR UniPathway; UPA00060; -.
DR Proteomes; UP000001414; Chromosome.
DR GO; GO:0005829; C:cytosol; IBA:GO_Central.
DR GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:UniProtKB-KW.
DR GO; GO:0016830; F:carbon-carbon lyase activity; IEA:InterPro.
DR GO; GO:0008270; F:zinc ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0009228; P:thiamine biosynthetic process; IBA:GO_Central.
DR GO; GO:0009229; P:thiamine diphosphate biosynthetic process; IEA:UniProtKB-UniPathway.
DR Gene3D; 3.20.20.540; -; 1.
DR HAMAP; MF_00089; ThiC; 1.
DR InterPro; IPR037509; ThiC.
DR InterPro; IPR025747; ThiC-associated_dom.
DR InterPro; IPR038521; ThiC/Bza_core_dom.
DR InterPro; IPR002817; ThiC/BzaA/B.
DR PANTHER; PTHR30557; PTHR30557; 1.
DR Pfam; PF13667; ThiC-associated; 1.
DR Pfam; PF01964; ThiC_Rad_SAM; 1.
DR SFLD; SFLDF00407; phosphomethylpyrimidine_syntha; 1.
DR TIGRFAMs; TIGR00190; thiC; 1.
PE 3: Inferred from homology;
KW 4Fe-4S; Iron; Iron-sulfur; Lyase; Metal-binding; Reference proteome;
KW S-adenosyl-L-methionine; Thiamine biosynthesis; Zinc.
FT CHAIN 1..565
FT /note="Phosphomethylpyrimidine synthase"
FT /id="PRO_0000152786"
FT BINDING 203
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00089"
FT BINDING 232
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00089"
FT BINDING 261
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00089"
FT BINDING 297
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00089"
FT BINDING 317..319
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00089"
FT BINDING 358..361
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00089"
FT BINDING 397
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00089"
FT BINDING 401
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00089"
FT BINDING 424
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00089"
FT BINDING 465
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00089"
FT BINDING 541
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_note="4Fe-4S-S-AdoMet"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00089"
FT BINDING 544
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_note="4Fe-4S-S-AdoMet"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00089"
FT BINDING 549
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_note="4Fe-4S-S-AdoMet"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00089"
SQ SEQUENCE 565 AA; 63833 MW; 3C2DAEC074902243 CRC64;
MEQKIKFPRS QKVYLPGKLY PNIRVAMRKV EQVPSVSFEG EEKIATPNPE VYVYDTSGPF
SDPSMSIDLK KGLPRLREEW IVGRGDVEQL PEITSEYGQM RRDDKSLDHL RFEHIALPYR
AKKGEAITQM AYAKRGIITP EMEYVAIREN MNCEELGIET HITPEFVRKE IAEGHAVLPA
NINHPEAEPM IIGRNFLVKI NTNIGNSATT SSIDEEVEKA LWSCKWGGDT LMDLSTGENI
HETREWIIRN CPVPVGTVPI YQALEKVNGV VEDLNWEIYR DTLIEQCEQG VDYFTIHAGI
RRHNVHLADK RLCGIVSRGG SIMSKWCLVH DQESFLYEHF DDICDILAQY DVAVSLGDGL
RPGSIHDAND EAQFAELDTM GELVLRAWEK NVQAFIEGPG HVPMHKIKEN MERQIEKCHD
APFYTLGPLV TDIAPGYDHI TSAIGAAQIG WLGTAMLCYV TPKEHLALPD KEDVRVGVIT
YKIAAHAADL AKGHPGAQVR DNALSKARYE FRWKDQFDLS LDPERAQGYF RAGHHIDGEY
CTMCGPNFCA MRLSRDLKKN AKSDK
