ID   GUAA_ROSDO              Reviewed;         522 AA.
AC   Q165N4;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   25-JUL-2006, sequence version 1.
DT   03-AUG-2022, entry version 102.
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}; OrderedLocusNames=RD1_2778;
OS   Roseobacter denitrificans (strain ATCC 33942 / OCh 114) (Erythrobacter sp.
OS   (strain OCh 114)) (Roseobacter denitrificans).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Rhodobacterales;
OC   Roseobacteraceae; Roseobacter.
OX   NCBI_TaxID=375451;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 33942 / OCh 114;
RX   PubMed=17098896; DOI=10.1128/jb.01390-06;
RA   Swingley W.D., Sadekar S., Mastrian S.D., Matthies H.J., Hao J., Ramos H.,
RA   Acharya C.R., Conrad A.L., Taylor H.L., Dejesa L.C., Shah M.K.,
RA   O'Huallachain M.E., Lince M.T., Blankenship R.E., Beatty J.T.,
RA   Touchman J.W.;
RT   "The complete genome sequence of Roseobacter denitrificans reveals a
RT   mixotrophic rather than photosynthetic metabolism.";
RL   J. Bacteriol. 189:683-690(2007).
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; CP000362; ABG32309.1; -; Genomic_DNA.
DR   RefSeq; WP_011568925.1; NZ_FOOO01000002.1.
DR   AlphaFoldDB; Q165N4; -.
DR   SMR; Q165N4; -.
DR   STRING; 375451.RD1_2778; -.
DR   EnsemblBacteria; ABG32309; ABG32309; RD1_2778.
DR   KEGG; rde:RD1_2778; -.
DR   eggNOG; COG0518; Bacteria.
DR   eggNOG; COG0519; Bacteria.
DR   HOGENOM; CLU_014340_0_5_5; -.
DR   OMA; KRKIIGH; -.
DR   OrthoDB; 504464at2; -.
DR   UniPathway; UPA00189; UER00296.
DR   Proteomes; UP000007029; 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..522
FT                   /note="GMP synthase [glutamine-hydrolyzing]"
FT                   /id="PRO_1000120385"
FT   DOMAIN          8..204
FT                   /note="Glutamine amidotransferase type-1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00344"
FT   DOMAIN          205..397
FT                   /note="GMPS ATP-PPase"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00344"
FT   ACT_SITE        86
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00344"
FT   ACT_SITE        179
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00344"
FT   ACT_SITE        181
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00344"
FT   BINDING         232..238
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00344"
SQ   SEQUENCE   522 AA;  57573 MW;  A648D3360EDF3BDB CRC64;
     MSTSDHDRLL IIDFGSQVTQ LIARRLRELN VYCEIHPFNL VDDAFLDAFG AKAVIFSGGP
     SSVFADGAPM PPASVFERGV PILGICYGQQ VMMHCLGGKV ERGHGTAEFG RAYVTPTAQK
     LDMLQGWFET DQDREQVWMS HGDHVSQIAP GFEVFGTSPN APFAITADTT RHFYAVQFHP
     EVHHTPNGAR LYENFVRLAG FKGDWTMGAY REEAIAKIRE QVGSGRVICA LSGGVDSSVA
     AVLIHEAIGD QLTCVYVDHG LMRKDESAQV VGMFREHYNL PLIHADESDL FLGKLEGVSD
     PETKRKIIGG LFIEVFEKYA KEIGGADFLA QGTLYPDVIE SVSFSGGPSV TIKSHHNVGG
     LPERMNMQLV EPLRELFKDE VRALGHELGL PASFIGRHPF PGPGLAIRCP GEITREKLDI
     LREADAVYID QIRKHGLYDE IWQAFVAILP VRTVGVMGDG RTYDFACALR AVTSVDGMTA
     DYYPFTHEFL GETATRIINE VPGINRVTYD ITSKPPGTIE WE