ID   GUAA_GLOC7              Reviewed;         542 AA.
AC   B7K8T7;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   10-FEB-2009, sequence version 1.
DT   03-AUG-2022, entry version 71.
DE   RecName: Full=GMP synthase [glutamine-hydrolyzing] {ECO:0000255|HAMAP-Rule:MF_00344};
DE            EC=6.3.5.2 {ECO:0000255|HAMAP-Rule:MF_00344};
DE   AltName: Full=GMP synthetase {ECO:0000255|HAMAP-Rule:MF_00344};
DE   AltName: Full=Glutamine amidotransferase {ECO:0000255|HAMAP-Rule:MF_00344};
GN   Name=guaA {ECO:0000255|HAMAP-Rule:MF_00344};
GN   OrderedLocusNames=PCC7424_2880;
OS   Gloeothece citriformis (strain PCC 7424) (Cyanothece sp. (strain PCC
OS   7424)).
OC   Bacteria; Cyanobacteria; Oscillatoriophycideae; Chroococcales;
OC   Aphanothecaceae; Gloeothece; Gloeothece citriformis.
OX   NCBI_TaxID=65393;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PCC 7424;
RX   PubMed=21972240; DOI=10.1128/mbio.00214-11;
RA   Bandyopadhyay A., Elvitigala T., Welsh E., Stockel J., Liberton M., Min H.,
RA   Sherman L.A., Pakrasi H.B.;
RT   "Novel metabolic attributes of the genus Cyanothece, comprising a group of
RT   unicellular nitrogen-fixing Cyanobacteria.";
RL   MBio 2:E214-E214(2011).
CC   -!- FUNCTION: Catalyzes the synthesis of GMP from XMP. {ECO:0000255|HAMAP-
CC       Rule:MF_00344}.
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_00344};
CC   -!- PATHWAY: Purine metabolism; GMP biosynthesis; GMP from XMP (L-Gln
CC       route): step 1/1. {ECO:0000255|HAMAP-Rule:MF_00344}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_00344}.
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DR   EMBL; CP001291; ACK71285.1; -; Genomic_DNA.
DR   RefSeq; WP_015954885.1; NC_011729.1.
DR   AlphaFoldDB; B7K8T7; -.
DR   SMR; B7K8T7; -.
DR   STRING; 65393.PCC7424_2880; -.
DR   MEROPS; C26.957; -.
DR   PRIDE; B7K8T7; -.
DR   EnsemblBacteria; ACK71285; ACK71285; PCC7424_2880.
DR   KEGG; cyc:PCC7424_2880; -.
DR   eggNOG; COG0518; Bacteria.
DR   eggNOG; COG0519; Bacteria.
DR   HOGENOM; CLU_014340_0_5_3; -.
DR   OMA; KRKIIGH; -.
DR   OrthoDB; 504464at2; -.
DR   UniPathway; UPA00189; UER00296.
DR   Proteomes; UP000002384; 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   GO; GO:0006541; P:glutamine metabolic process; IEA:UniProtKB-KW.
DR   CDD; cd01742; GATase1_GMP_Synthase; 1.
DR   CDD; cd01997; GMP_synthase_C; 1.
DR   Gene3D; 3.40.50.620; -; 1.
DR   Gene3D; 3.40.50.880; -; 1.
DR   HAMAP; MF_00344; GMP_synthase; 1.
DR   InterPro; IPR029062; Class_I_gatase-like.
DR   InterPro; IPR017926; GATASE.
DR   InterPro; IPR001674; GMP_synth_C.
DR   InterPro; IPR004739; GMP_synth_GATase.
DR   InterPro; IPR022955; GMP_synthase.
DR   InterPro; IPR025777; GMPS_ATP_PPase_dom.
DR   InterPro; IPR014729; Rossmann-like_a/b/a_fold.
DR   Pfam; PF00117; GATase; 1.
DR   Pfam; PF00958; GMP_synt_C; 1.
DR   SUPFAM; SSF52317; SSF52317; 1.
DR   TIGRFAMs; TIGR00884; guaA_Cterm; 1.
DR   TIGRFAMs; TIGR00888; guaA_Nterm; 1.
DR   PROSITE; PS51273; GATASE_TYPE_1; 1.
DR   PROSITE; PS51553; GMPS_ATP_PPASE; 1.
PE   3: Inferred from homology;
KW   ATP-binding; Glutamine amidotransferase; GMP biosynthesis; Ligase;
KW   Nucleotide-binding; Purine biosynthesis; Reference proteome.
FT   CHAIN           1..542
FT                   /note="GMP synthase [glutamine-hydrolyzing]"
FT                   /id="PRO_1000120271"
FT   DOMAIN          28..218
FT                   /note="Glutamine amidotransferase type-1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00344"
FT   DOMAIN          219..417
FT                   /note="GMPS ATP-PPase"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00344"
FT   ACT_SITE        105
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00344"
FT   ACT_SITE        192
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00344"
FT   ACT_SITE        194
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00344"
FT   BINDING         246..252
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00344"
SQ   SEQUENCE   542 AA;  61162 MW;  854AE1B9F04B3B84 CRC64;
     MATQIPSKPS TSETVPTESL KERINRQMIV ILDFGSQYSE LIARRIRETN VYSEVLSYRT
     SAEQLRQLAP KGIILSGGPN SVYDKNAPQC TQEIWDLGIP ILGVCYGMQL MVQQLGGKVE
     RAKRAEYGKA SLHIDDPTDL LTNVEDNSIA WMSHGDSCIE LPDGFKILAH TDNTPCAAIA
     NHEQKLFGVQ FHPEVVHSVG GIALIRNFVY HICECEPTWT TEAFVEEAIR EIRAKIGDKR
     VLLALSGGVD SSTLAFLLHR AIGDQLTCMF IDQGFMRKGE PERLMEIFDH QFHIPVVYVN
     SREQFLEQLK GVTDPEEKRR LIGHEFIKVF EEESNRLGPF DYLAQGTLYP DVIESADSNV
     DPQTGERVAV KIKSHHNVGG LPKNLRFKLV EPLRKLFKDE VRKVARSIGL PEEIVRRHPF
     PGPGLAIRII GEVTSERLKI LRDADFVVRD EISKQGMYHD FWQAFAVLLP VRSVGVMGDQ
     RTYAHPVVLR LITSEDGMTA DWAKVPYDLL EIISNRIVNE VRGVNRVVYD ITSKPPGTIE
     WE