ID D7DWY9_NOSA0 Unreviewed; 211 AA.
AC D7DWY9;
DT 10-AUG-2010, integrated into UniProtKB/TrEMBL.
DT 10-AUG-2010, sequence version 1.
DT 24-JAN-2024, entry version 73.
DE RecName: Full=Imidazole glycerol phosphate synthase subunit HisH {ECO:0000256|HAMAP-Rule:MF_00278};
DE EC=4.3.2.10 {ECO:0000256|HAMAP-Rule:MF_00278};
DE AltName: Full=IGP synthase glutaminase subunit {ECO:0000256|HAMAP-Rule:MF_00278};
DE EC=3.5.1.2 {ECO:0000256|HAMAP-Rule:MF_00278};
DE AltName: Full=IGP synthase subunit HisH {ECO:0000256|HAMAP-Rule:MF_00278};
DE AltName: Full=ImGP synthase subunit HisH {ECO:0000256|HAMAP-Rule:MF_00278};
DE Short=IGPS subunit HisH {ECO:0000256|HAMAP-Rule:MF_00278};
GN Name=hisH {ECO:0000256|HAMAP-Rule:MF_00278};
GN OrderedLocusNames=Aazo_2143 {ECO:0000313|EMBL:ADI64162.1};
OS Nostoc azollae (strain 0708) (Anabaena azollae (strain 0708)).
OC Bacteria; Cyanobacteriota; Cyanophyceae; Nostocales; Nostocaceae;
OC Trichormus.
OX NCBI_TaxID=551115 {ECO:0000313|EMBL:ADI64162.1, ECO:0000313|Proteomes:UP000001511};
RN [1] {ECO:0000313|EMBL:ADI64162.1, ECO:0000313|Proteomes:UP000001511}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=0708 {ECO:0000313|EMBL:ADI64162.1,
RC ECO:0000313|Proteomes:UP000001511};
RX PubMed=20628610; DOI=10.1371/journal.pone.0011486;
RA Ran L., Larsson J., Vigil-Stenman T., Nylander J.A., Ininbergs K.,
RA Zheng W.W., Lapidus A., Lowry S., Haselkorn R., Bergman B.;
RT "Genome erosion in a nitrogen-fixing vertically transmitted endosymbiotic
RT multicellular cyanobacterium.";
RL PLoS ONE 5:E11486-E11486(2010).
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:0000256|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;
CC Evidence={ECO:0000256|ARBA:ARBA00000619, ECO:0000256|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:0000256|ARBA:ARBA00001062, ECO:0000256|HAMAP-
CC 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:0000256|ARBA:ARBA00005091, ECO:0000256|HAMAP-Rule:MF_00278}.
CC -!- SUBUNIT: Heterodimer of HisH and HisF. {ECO:0000256|ARBA:ARBA00011152,
CC ECO:0000256|HAMAP-Rule:MF_00278}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00278}.
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DR EMBL; CP002059; ADI64162.1; -; Genomic_DNA.
DR RefSeq; WP_013191179.1; NC_014248.1.
DR AlphaFoldDB; D7DWY9; -.
DR STRING; 551115.Aazo_2143; -.
DR KEGG; naz:Aazo_2143; -.
DR eggNOG; COG0118; Bacteria.
DR HOGENOM; CLU_071837_2_2_3; -.
DR OMA; WVYFVHS; -.
DR OrthoDB; 9807137at2; -.
DR UniPathway; UPA00031; UER00010.
DR Proteomes; UP000001511; Chromosome.
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-UniRule.
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 NCBIfam; TIGR01855; IMP_synth_hisH; 1.
DR PANTHER; PTHR42701; IMIDAZOLE GLYCEROL PHOSPHATE SYNTHASE SUBUNIT HISH; 1.
DR PANTHER; PTHR42701:SF1; IMIDAZOLE GLYCEROL PHOSPHATE SYNTHASE SUBUNIT HISH; 1.
DR Pfam; PF00117; GATase; 1.
DR PIRSF; PIRSF000495; Amidotransf_hisH; 1.
DR SUPFAM; SSF52317; Class I glutamine amidotransferase-like; 1.
DR PROSITE; PS51274; GATASE_COBBQ; 1.
DR PROSITE; PS51273; GATASE_TYPE_1; 1.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis {ECO:0000256|ARBA:ARBA00022605, ECO:0000256|HAMAP-
KW Rule:MF_00278}; Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00278};
KW Glutamine amidotransferase {ECO:0000256|HAMAP-Rule:MF_00278,
KW ECO:0000256|PROSITE-ProRule:PRU00606};
KW Histidine biosynthesis {ECO:0000256|ARBA:ARBA00023102, ECO:0000256|HAMAP-
KW Rule:MF_00278};
KW Hydrolase {ECO:0000256|ARBA:ARBA00022801, ECO:0000256|HAMAP-Rule:MF_00278};
KW Lyase {ECO:0000256|ARBA:ARBA00023239, ECO:0000256|HAMAP-Rule:MF_00278};
KW Reference proteome {ECO:0000313|Proteomes:UP000001511};
KW Transferase {ECO:0000313|EMBL:ADI64162.1}.
FT DOMAIN 6..203
FT /note="Glutamine amidotransferase"
FT /evidence="ECO:0000259|Pfam:PF00117"
FT ACT_SITE 81
FT /note="Nucleophile"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00278,
FT ECO:0000256|PIRSR:PIRSR000495-1"
FT ACT_SITE 186
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00278,
FT ECO:0000256|PIRSR:PIRSR000495-1"
FT ACT_SITE 188
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00278,
FT ECO:0000256|PIRSR:PIRSR000495-1"
SQ SEQUENCE 211 AA; 23122 MW; 201E53C6D5E88562 CRC64;
MPVIAVVDYE MGNLHSVCKG LEKAGATPKV TYCARELEQA DAIVLPGVGA FDPAVQHLRE
RGLEQPIKDA ISSGKPFLGI CLGLQILFES SAEGTQRGLG IVRGKVRRFR PEASIAIPHM
GWNQLQLTQA KSILWEHLPA QPWVYFVHSY YVDPTEPHIR AATVTHGSQT VTAAIAHENL
MAVQFHPEKS SNIGLQVLSN FVAQVREKIP A
//