ID   GUAAB_HALS3             Reviewed;         305 AA.
AC   B0R6G1;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   08-APR-2008, sequence version 1.
DT   03-AUG-2022, entry version 78.
DE   RecName: Full=GMP synthase [glutamine-hydrolyzing] subunit B {ECO:0000255|HAMAP-Rule:MF_00345};
DE            EC=6.3.5.2 {ECO:0000255|HAMAP-Rule:MF_00345};
DE   AltName: Full=GMP synthetase {ECO:0000255|HAMAP-Rule:MF_00345};
GN   Name=guaAB {ECO:0000255|HAMAP-Rule:MF_00345}; OrderedLocusNames=OE_3571R;
OS   Halobacterium salinarum (strain ATCC 29341 / DSM 671 / R1).
OC   Archaea; Euryarchaeota; Stenosarchaea group; Halobacteria; Halobacteriales;
OC   Halobacteriaceae; Halobacterium.
OX   NCBI_TaxID=478009;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 29341 / DSM 671 / R1;
RX   PubMed=18313895; DOI=10.1016/j.ygeno.2008.01.001;
RA   Pfeiffer F., Schuster S.C., Broicher A., Falb M., Palm P., Rodewald K.,
RA   Ruepp A., Soppa J., Tittor J., Oesterhelt D.;
RT   "Evolution in the laboratory: the genome of Halobacterium salinarum strain
RT   R1 compared to that of strain NRC-1.";
RL   Genomics 91:335-346(2008).
CC   -!- FUNCTION: Catalyzes the synthesis of GMP from XMP. {ECO:0000255|HAMAP-
CC       Rule:MF_00345}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ATP + H2O + L-glutamine + XMP = AMP + diphosphate + GMP + 2
CC         H(+) + L-glutamate; Xref=Rhea:RHEA:11680, ChEBI:CHEBI:15377,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:29985, ChEBI:CHEBI:30616,
CC         ChEBI:CHEBI:33019, ChEBI:CHEBI:57464, ChEBI:CHEBI:58115,
CC         ChEBI:CHEBI:58359, ChEBI:CHEBI:456215; EC=6.3.5.2;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00345};
CC   -!- PATHWAY: Purine metabolism; GMP biosynthesis; GMP from XMP (L-Gln
CC       route): step 1/1. {ECO:0000255|HAMAP-Rule:MF_00345}.
CC   -!- SUBUNIT: Heterodimer composed of a glutamine amidotransferase subunit
CC       (A) and a GMP-binding subunit (B). {ECO:0000255|HAMAP-Rule:MF_00345}.
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DR   EMBL; AM774415; CAP14330.1; -; Genomic_DNA.
DR   RefSeq; WP_010903336.1; NC_010364.1.
DR   AlphaFoldDB; B0R6G1; -.
DR   SMR; B0R6G1; -.
DR   EnsemblBacteria; CAP14330; CAP14330; OE_3571R.
DR   GeneID; 5953124; -.
DR   GeneID; 62885055; -.
DR   KEGG; hsl:OE_3571R; -.
DR   HOGENOM; CLU_014340_0_0_2; -.
DR   OMA; EGGIKSH; -.
DR   PhylomeDB; B0R6G1; -.
DR   UniPathway; UPA00189; UER00296.
DR   Proteomes; UP000001321; Chromosome.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0003922; F:GMP synthase (glutamine-hydrolyzing) activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0016462; F:pyrophosphatase activity; IEA:InterPro.
DR   CDD; cd01997; GMP_synthase_C; 1.
DR   Gene3D; 3.40.50.620; -; 1.
DR   HAMAP; MF_00345; GMP_synthase_B; 1.
DR   InterPro; IPR001674; GMP_synth_C.
DR   InterPro; IPR026598; GMP_synthase_B.
DR   InterPro; IPR025777; GMPS_ATP_PPase_dom.
DR   InterPro; IPR022310; NAD/GMP_synthase.
DR   InterPro; IPR014729; Rossmann-like_a/b/a_fold.
DR   Pfam; PF00958; GMP_synt_C; 1.
DR   Pfam; PF02540; NAD_synthase; 1.
DR   TIGRFAMs; TIGR00884; guaA_Cterm; 1.
DR   PROSITE; PS51553; GMPS_ATP_PPASE; 1.
PE   3: Inferred from homology;
KW   ATP-binding; GMP biosynthesis; Ligase; Nucleotide-binding;
KW   Purine biosynthesis.
FT   CHAIN           1..305
FT                   /note="GMP synthase [glutamine-hydrolyzing] subunit B"
FT                   /id="PRO_1000120464"
FT   DOMAIN          2..185
FT                   /note="GMPS ATP-PPase"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00345"
FT   BINDING         29..35
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00345"
SQ   SEQUENCE   305 AA;  33725 MW;  D47A25946A0869ED CRC64;
     MVDVDSFVED ARAEISEALG DETAIIALSG GVDSSTAAAL AYEAVGDQLV PVYVDTGLMR
     KGETDEIREV FDYMDSLRVV DASDRFFDEL AGVTDPEEKR HAIGEQFIRE FETVAEEVDA
     TQLVQGTIYP DRIESEGTIK SHHNVGGLPE RVGFEGIVEP MRDLYKDEVR EVARHLGLEE
     IISERMPFPG PGLAVRVIGE VTPEKVAVCR EATHIVEDEL EAYEPWQAFA AVLGRATGVK
     GDNRVHGHVV AVRSVESRDG MTARAQELEW ETLQRLQSRI AGTIDEVSRV VYDVTHKPPA
     TIEYE