ID   GUAA_LACAC              Reviewed;         516 AA.
AC   Q5FMD6;
DT   04-APR-2006, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2005, sequence version 1.
DT   03-AUG-2022, entry version 97.
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=LBA0245;
OS   Lactobacillus acidophilus (strain ATCC 700396 / NCK56 / N2 / NCFM).
OC   Bacteria; Firmicutes; Bacilli; Lactobacillales; Lactobacillaceae;
OC   Lactobacillus.
OX   NCBI_TaxID=272621;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700396 / NCK56 / N2 / NCFM;
RX   PubMed=15671160; DOI=10.1073/pnas.0409188102;
RA   Altermann E., Russell W.M., Azcarate-Peril M.A., Barrangou R., Buck B.L.,
RA   McAuliffe O., Souther N., Dobson A., Duong T., Callanan M., Lick S.,
RA   Hamrick A., Cano R., Klaenhammer T.R.;
RT   "Complete genome sequence of the probiotic lactic acid bacterium
RT   Lactobacillus acidophilus NCFM.";
RL   Proc. Natl. Acad. Sci. U.S.A. 102:3906-3912(2005).
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; CP000033; AAV42138.1; -; Genomic_DNA.
DR   RefSeq; WP_003548925.1; NC_006814.3.
DR   RefSeq; YP_193169.1; NC_006814.3.
DR   AlphaFoldDB; Q5FMD6; -.
DR   SMR; Q5FMD6; -.
DR   STRING; 272621.LBA0245; -.
DR   MEROPS; C26.957; -.
DR   PRIDE; Q5FMD6; -.
DR   EnsemblBacteria; AAV42138; AAV42138; LBA0245.
DR   GeneID; 56941847; -.
DR   KEGG; lac:LBA0245; -.
DR   PATRIC; fig|272621.13.peg.233; -.
DR   eggNOG; COG0519; Bacteria.
DR   HOGENOM; CLU_014340_0_5_9; -.
DR   OMA; KRKIIGH; -.
DR   BioCyc; LACI272621:G1G49-236-MON; -.
DR   UniPathway; UPA00189; UER00296.
DR   Proteomes; UP000006381; 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; IPR022310; NAD/GMP_synthase.
DR   InterPro; IPR014729; Rossmann-like_a/b/a_fold.
DR   Pfam; PF00117; GATase; 1.
DR   Pfam; PF00958; GMP_synt_C; 1.
DR   Pfam; PF02540; NAD_synthase; 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..516
FT                   /note="GMP synthase [glutamine-hydrolyzing]"
FT                   /id="PRO_0000229435"
FT   DOMAIN          10..201
FT                   /note="Glutamine amidotransferase type-1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00344"
FT   DOMAIN          202..391
FT                   /note="GMPS ATP-PPase"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00344"
FT   ACT_SITE        87
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00344"
FT   ACT_SITE        175
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00344"
FT   ACT_SITE        177
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00344"
FT   BINDING         229..235
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00344"
SQ   SEQUENCE   516 AA;  57721 MW;  6CD19AE8D182A931 CRC64;
     MAKNLEDFDK IIVLDFGSQY NQLITRRIRD FGIYSELLPH DLSIEKIKEM NPKGIIFSGG
     PNSVYDDGAL KVDPEIFKLG IPILGICYGM QLMSYDLGGK VERAENKEYG RANITVEDPD
     SALFKGLPTK QYVWMSHGDL VTQAPEGFEV TASSKNCPIA AIANPDKKFY GIQFHAEVRN
     SEYGLDILKH FAFDVCGAVA NWTMADFIDM QVDEIRKEVG DKKVILGLSG GVDSSVTATL
     LHKAIGDQLT AIFVDHGMLR KDEGDQVMKA LNKDLGVNII RVNAQERFLN KLKGVTDPEQ
     KRKIIGKEFI EVFNEEAKKL KDVDFLAQGT LYTDVIESGT NTAQTIKSHH NVGGLPEDMN
     FKLIEPLRKL FKDEVRELGE KLGIPHDLVW RQPFPGPGLG IRVLGEVTED KLKIVRESDA
     ILREEIKKAG LQEKIWQYFT VLPGIRSVGV MGDGRTYDYT IGIRAVTSID GMTADFAQIP
     WDVLGHISDR IVNEVDNVNR IVYDVTSKPP STIEWE