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HIS5_DEHMC
ID   HIS5_DEHMC              Reviewed;         205 AA.
AC   Q3ZY50;
DT   04-APR-2006, integrated into UniProtKB/Swiss-Prot.
DT   27-SEP-2005, sequence version 1.
DT   25-MAY-2022, entry version 100.
DE   RecName: Full=Imidazole glycerol phosphate synthase subunit HisH {ECO:0000255|HAMAP-Rule:MF_00278};
DE            EC=4.3.2.10 {ECO:0000255|HAMAP-Rule:MF_00278};
DE   AltName: Full=IGP synthase glutaminase subunit {ECO:0000255|HAMAP-Rule:MF_00278};
DE            EC=3.5.1.2 {ECO:0000255|HAMAP-Rule:MF_00278};
DE   AltName: Full=IGP synthase subunit HisH {ECO:0000255|HAMAP-Rule:MF_00278};
DE   AltName: Full=ImGP synthase subunit HisH {ECO:0000255|HAMAP-Rule:MF_00278};
DE            Short=IGPS subunit HisH {ECO:0000255|HAMAP-Rule:MF_00278};
GN   Name=hisH {ECO:0000255|HAMAP-Rule:MF_00278}; OrderedLocusNames=cbdbA1060;
OS   Dehalococcoides mccartyi (strain CBDB1).
OC   Bacteria; Chloroflexi; Dehalococcoidia; Dehalococcoidales;
OC   Dehalococcoidaceae; Dehalococcoides.
OX   NCBI_TaxID=255470;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CBDB1;
RX   PubMed=16116419; DOI=10.1038/nbt1131;
RA   Kube M., Beck A., Zinder S.H., Kuhl H., Reinhardt R., Adrian L.;
RT   "Genome sequence of the chlorinated compound-respiring bacterium
RT   Dehalococcoides species strain CBDB1.";
RL   Nat. Biotechnol. 23:1269-1273(2005).
CC   -!- FUNCTION: IGPS catalyzes the conversion of PRFAR and glutamine to IGP,
CC       AICAR and glutamate. The HisH subunit catalyzes the hydrolysis of
CC       glutamine to glutamate and ammonia as part of the synthesis of IGP and
CC       AICAR. The resulting ammonia molecule is channeled to the active site
CC       of HisF. {ECO:0000255|HAMAP-Rule:MF_00278}.
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; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00278};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=H2O + L-glutamine = L-glutamate + NH4(+);
CC         Xref=Rhea:RHEA:15889, ChEBI:CHEBI:15377, ChEBI:CHEBI:28938,
CC         ChEBI:CHEBI:29985, ChEBI:CHEBI:58359; EC=3.5.1.2;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00278};
CC   -!- PATHWAY: Amino-acid biosynthesis; L-histidine biosynthesis; L-histidine
CC       from 5-phospho-alpha-D-ribose 1-diphosphate: step 5/9.
CC       {ECO:0000255|HAMAP-Rule:MF_00278}.
CC   -!- SUBUNIT: Heterodimer of HisH and HisF. {ECO:0000255|HAMAP-
CC       Rule:MF_00278}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00278}.
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DR   EMBL; AJ965256; CAI83164.1; -; Genomic_DNA.
DR   RefSeq; WP_011309515.1; NC_007356.1.
DR   AlphaFoldDB; Q3ZY50; -.
DR   SMR; Q3ZY50; -.
DR   PRIDE; Q3ZY50; -.
DR   KEGG; deh:cbdbA1060; -.
DR   HOGENOM; CLU_071837_2_2_0; -.
DR   OMA; WVYFVHS; -.
DR   UniPathway; UPA00031; UER00010.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0004359; F:glutaminase activity; IEA:UniProtKB-EC.
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:0006541; P:glutamine metabolic process; IEA:UniProtKB-KW.
DR   GO; GO:0000105; P:histidine biosynthetic process; IEA:UniProtKB-UniRule.
DR   CDD; cd01748; GATase1_IGP_Synthase; 1.
DR   Gene3D; 3.40.50.880; -; 1.
DR   HAMAP; MF_00278; HisH; 1.
DR   InterPro; IPR029062; Class_I_gatase-like.
DR   InterPro; IPR017926; GATASE.
DR   InterPro; IPR010139; Imidazole-glycPsynth_HisH.
DR   PANTHER; PTHR42701; PTHR42701; 1.
DR   Pfam; PF00117; GATase; 1.
DR   PIRSF; PIRSF000495; Amidotransf_hisH; 1.
DR   SUPFAM; SSF52317; SSF52317; 1.
DR   TIGRFAMs; TIGR01855; IMP_synth_hisH; 1.
DR   PROSITE; PS51273; GATASE_TYPE_1; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Cytoplasm; Glutamine amidotransferase;
KW   Histidine biosynthesis; Hydrolase; Lyase.
FT   CHAIN           1..205
FT                   /note="Imidazole glycerol phosphate synthase subunit HisH"
FT                   /id="PRO_0000231721"
FT   DOMAIN          1..205
FT                   /note="Glutamine amidotransferase type-1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00278"
FT   ACT_SITE        79
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00278"
FT   ACT_SITE        181
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00278"
FT   ACT_SITE        183
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00278"
SQ   SEQUENCE   205 AA;  22167 MW;  6199C935AAFE3A51 CRC64;
     MIALVDYGGG NLKSVANAIH ALGYEFTLTS DPKEILSAQA VILPGVGAAA DTVAGLRAKG
     LDEAIKELVK RDIPLLAICV GMQVLFDSTE EGGQTKCLGI LAGEVKRLPD GVKIPQMGWN
     QLKQRVSHPL FEGIPDGTDF YFVHSYYASP ADRNIIGATT DYGVDFCSLV INKRLIATQF
     HPEKSGSYGL KLYQNFFKMA LGDKK
 
 
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