ID E6XFC3_CELAD Unreviewed; 194 AA.
AC E6XFC3;
DT 08-MAR-2011, integrated into UniProtKB/TrEMBL.
DT 08-MAR-2011, sequence version 1.
DT 27-MAR-2024, entry version 74.
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=Celal_4154 {ECO:0000313|EMBL:ADV51396.1};
OS Cellulophaga algicola (strain DSM 14237 / IC166 / ACAM 630).
OC Bacteria; Bacteroidota; Flavobacteriia; Flavobacteriales;
OC Flavobacteriaceae; Cellulophaga.
OX NCBI_TaxID=688270 {ECO:0000313|EMBL:ADV51396.1, ECO:0000313|Proteomes:UP000008634};
RN [1] {ECO:0000313|EMBL:ADV51396.1, ECO:0000313|Proteomes:UP000008634}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 14237 / IC166 / ACAM 630
RC {ECO:0000313|Proteomes:UP000008634};
RX PubMed=21475589; DOI=10.4056/sigs.1543845;
RA Abt B., Lu M., Misra M., Han C., Nolan M., Lucas S., Hammon N.,
RA Deshpande S., Cheng J.F., Tapia R., Goodwin L., Pitluck S., Liolios K.,
RA Pagani I., Ivanova N., Mavromatis K., Ovchinikova G., Pati A., Chen A.,
RA Palaniappan K., Land M., Hauser L., Chang Y.J., Jeffries C.D., Detter J.C.,
RA Brambilla E., Rohde M., Tindall B.J., Goker M., Woyke T., Bristow J.,
RA Eisen J.A., Markowitz V., Hugenholtz P., Kyrpides N.C., Klenk H.P.,
RA Lapidus A.;
RT "Complete genome sequence of Cellulophaga algicola type strain (IC166).";
RL Stand. Genomic Sci. 4:72-80(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}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; CP002453; ADV51396.1; -; Genomic_DNA.
DR RefSeq; WP_013552844.1; NC_014934.1.
DR AlphaFoldDB; E6XFC3; -.
DR STRING; 688270.Celal_4154; -.
DR MEROPS; C26.965; -.
DR KEGG; cao:Celal_4154; -.
DR eggNOG; COG0118; Bacteria.
DR HOGENOM; CLU_071837_0_0_10; -.
DR OrthoDB; 9807137at2; -.
DR UniPathway; UPA00031; UER00010.
DR Proteomes; UP000008634; 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 PRINTS; PR00097; ANTSNTHASEII.
DR SUPFAM; SSF52317; Class I glutamine amidotransferase-like; 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:PRU00605};
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}.
FT DOMAIN 4..190
FT /note="Glutamine amidotransferase"
FT /evidence="ECO:0000259|Pfam:PF00117"
FT ACT_SITE 77
FT /note="Nucleophile"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00278,
FT ECO:0000256|PIRSR:PIRSR000495-1"
FT ACT_SITE 175
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00278,
FT ECO:0000256|PIRSR:PIRSR000495-1"
FT ACT_SITE 177
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00278,
FT ECO:0000256|PIRSR:PIRSR000495-1"
SQ SEQUENCE 194 AA; 21436 MW; 075B0C2EAC946B80 CRC64;
MKIVIINYGA GNIQSIKFAI QRLGFEAILT NDVHEILAAD KVIFPGVGEA SSAMHKLRAS
GLDTLVPNLK QPVLGICLGM QLMCNSTEEG HTDGLGIFDV AVVKFSNQVK VPQIGWNQIQ
DLKSELFEGI SEDEYIYLVH SFYAPICKET IATSNYDVTY SAALQKDNFY GTQFHPEKSS
SVGEKILLNF LKMK
//
