ID   HIS6_THEP3              Reviewed;         254 AA.
AC   Q9RPQ4;
DT   02-MAY-2002, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-2000, sequence version 1.
DT   25-MAY-2022, entry version 80.
DE   RecName: Full=Imidazole glycerol phosphate synthase subunit HisF;
DE            EC=4.3.2.10;
DE   AltName: Full=IGP synthase cyclase subunit;
DE   AltName: Full=IGP synthase subunit HisF;
DE   AltName: Full=ImGP synthase subunit HisF;
DE            Short=IGPS subunit HisF;
GN   Name=hisF;
OS   Thermoanaerobacter pseudethanolicus (strain ATCC 33223 / 39E) (Clostridium
OS   thermohydrosulfuricum).
OC   Bacteria; Firmicutes; Clostridia; Thermoanaerobacterales;
OC   Thermoanaerobacteraceae; Thermoanaerobacter.
OX   NCBI_TaxID=340099;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=10594232; DOI=10.1007/s002849910029;
RA   Erbeznik M., Strobel H.J., Dawson K.A.;
RT   "Organization and sequence of histidine biosynthesis genes hisH, -A, -F,
RT   and -IE in Thermoanaerobacter ethanolicus.";
RL   Curr. Microbiol. 40:140-142(2000).
CC   -!- FUNCTION: IGPS catalyzes the conversion of PRFAR and glutamine to IGP,
CC       AICAR and glutamate. The HisF subunit catalyzes the cyclization
CC       activity that produces IGP and AICAR from PRFAR using the ammonia
CC       provided by the HisH subunit (By similarity). {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=5-[(5-phospho-1-deoxy-D-ribulos-1-ylimino)methylamino]-1-(5-
CC         phospho-beta-D-ribosyl)imidazole-4-carboxamide + L-glutamine = 5-
CC         amino-1-(5-phospho-beta-D-ribosyl)imidazole-4-carboxamide + D-
CC         erythro-1-(imidazol-4-yl)glycerol 3-phosphate + H(+) + L-glutamate;
CC         Xref=Rhea:RHEA:24793, ChEBI:CHEBI:15378, ChEBI:CHEBI:29985,
CC         ChEBI:CHEBI:58278, ChEBI:CHEBI:58359, ChEBI:CHEBI:58475,
CC         ChEBI:CHEBI:58525; EC=4.3.2.10;
CC   -!- PATHWAY: Amino-acid biosynthesis; L-histidine biosynthesis; L-histidine
CC       from 5-phospho-alpha-D-ribose 1-diphosphate: step 5/9.
CC   -!- SUBUNIT: Heterodimer of HisH and HisF. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the HisA/HisF family. {ECO:0000305}.
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DR   EMBL; AF150930; AAF05094.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q9RPQ4; -.
DR   SMR; Q9RPQ4; -.
DR   UniPathway; UPA00031; UER00010.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0000107; F:imidazoleglycerol-phosphate synthase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0016829; F:lyase activity; IEA:UniProtKB-KW.
DR   GO; GO:0000105; P:histidine biosynthetic process; IEA:UniProtKB-UniRule.
DR   CDD; cd04731; HisF; 1.
DR   Gene3D; 3.20.20.70; -; 1.
DR   HAMAP; MF_01013; HisF; 1.
DR   InterPro; IPR013785; Aldolase_TIM.
DR   InterPro; IPR006062; His_biosynth.
DR   InterPro; IPR004651; HisF.
DR   InterPro; IPR011060; RibuloseP-bd_barrel.
DR   Pfam; PF00977; His_biosynth; 1.
DR   SUPFAM; SSF51366; SSF51366; 1.
DR   TIGRFAMs; TIGR00735; hisF; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Cytoplasm; Histidine biosynthesis; Lyase.
FT   CHAIN           1..254
FT                   /note="Imidazole glycerol phosphate synthase subunit HisF"
FT                   /id="PRO_0000142250"
FT   ACT_SITE        11
FT                   /evidence="ECO:0000255"
FT   ACT_SITE        130
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   254 AA;  27881 MW;  532C12D4A326167D CRC64;
     MVTKRIIPCL DVHNGRVVKG VNFVNIRDAG DPVEIASYYD KAGADELTFL DITASAELRN
     IMIDVVRRVA EQVFIPFTVG GGIRTVEDFR EILKAGADKV SINSAAVKRP ELISEAASRF
     GSQCVVVAID AKRRDDNSGW DVYINGGRIN TGKDAVEWAV EVEKLGAGEI LLTSMDCDGT
     KKGYDIELTR KVSESVRMIP VIASGGAGTM EHFREALVEG KADAVLAASL FHYREIEIME
     LKKYLKENGI EIRM