GUAC_SALHS
ID GUAC_SALHS Reviewed; 347 AA.
AC B4TJA0;
DT 14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT 23-SEP-2008, sequence version 1.
DT 03-AUG-2022, entry version 69.
DE RecName: Full=GMP reductase {ECO:0000255|HAMAP-Rule:MF_00596};
DE EC=1.7.1.7 {ECO:0000255|HAMAP-Rule:MF_00596};
DE AltName: Full=Guanosine 5'-monophosphate oxidoreductase {ECO:0000255|HAMAP-Rule:MF_00596};
DE Short=Guanosine monophosphate reductase {ECO:0000255|HAMAP-Rule:MF_00596};
GN Name=guaC {ECO:0000255|HAMAP-Rule:MF_00596}; OrderedLocusNames=SeHA_C0155;
OS Salmonella heidelberg (strain SL476).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC Enterobacteriaceae; Salmonella.
OX NCBI_TaxID=454169;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=SL476;
RX PubMed=21602358; DOI=10.1128/jb.00297-11;
RA Fricke W.F., Mammel M.K., McDermott P.F., Tartera C., White D.G.,
RA Leclerc J.E., Ravel J., Cebula T.A.;
RT "Comparative genomics of 28 Salmonella enterica isolates: evidence for
RT CRISPR-mediated adaptive sublineage evolution.";
RL J. Bacteriol. 193:3556-3568(2011).
CC -!- FUNCTION: Catalyzes the irreversible NADPH-dependent deamination of GMP
CC to IMP. It functions in the conversion of nucleobase, nucleoside and
CC nucleotide derivatives of G to A nucleotides, and in maintaining the
CC intracellular balance of A and G nucleotides. {ECO:0000255|HAMAP-
CC Rule:MF_00596}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=IMP + NADP(+) + NH4(+) = GMP + 2 H(+) + NADPH;
CC Xref=Rhea:RHEA:17185, ChEBI:CHEBI:15378, ChEBI:CHEBI:28938,
CC ChEBI:CHEBI:57783, ChEBI:CHEBI:58053, ChEBI:CHEBI:58115,
CC ChEBI:CHEBI:58349; EC=1.7.1.7; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_00596};
CC -!- SUBUNIT: Homotetramer. {ECO:0000255|HAMAP-Rule:MF_00596}.
CC -!- SIMILARITY: Belongs to the IMPDH/GMPR family. GuaC type 1 subfamily.
CC {ECO:0000255|HAMAP-Rule:MF_00596}.
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DR EMBL; CP001120; ACF69085.1; -; Genomic_DNA.
DR RefSeq; WP_001217365.1; NC_011083.1.
DR AlphaFoldDB; B4TJA0; -.
DR SMR; B4TJA0; -.
DR KEGG; seh:SeHA_C0155; -.
DR HOGENOM; CLU_022552_5_3_6; -.
DR OMA; AYKEYFG; -.
DR Proteomes; UP000001866; Chromosome.
DR GO; GO:1902560; C:GMP reductase complex; IEA:InterPro.
DR GO; GO:0003920; F:GMP reductase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0006163; P:purine nucleotide metabolic process; IEA:UniProtKB-UniRule.
DR CDD; cd00381; IMPDH; 1.
DR Gene3D; 3.20.20.70; -; 1.
DR HAMAP; MF_00596; GMP_reduct_type1; 1.
DR InterPro; IPR013785; Aldolase_TIM.
DR InterPro; IPR005993; GMPR.
DR InterPro; IPR015875; IMP_DH/GMP_Rdtase_CS.
DR InterPro; IPR001093; IMP_DH_GMPRt.
DR Pfam; PF00478; IMPDH; 1.
DR PIRSF; PIRSF000235; GMP_reductase; 1.
DR TIGRFAMs; TIGR01305; GMP_reduct_1; 1.
DR PROSITE; PS00487; IMP_DH_GMP_RED; 1.
PE 3: Inferred from homology;
KW Metal-binding; NADP; Oxidoreductase; Potassium.
FT CHAIN 1..347
FT /note="GMP reductase"
FT /id="PRO_1000129864"
FT ACT_SITE 186
FT /note="Thioimidate intermediate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00596"
FT BINDING 108..131
FT /ligand="NADP(+)"
FT /ligand_id="ChEBI:CHEBI:58349"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00596"
FT BINDING 181
FT /ligand="K(+)"
FT /ligand_id="ChEBI:CHEBI:29103"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00596"
FT BINDING 183
FT /ligand="K(+)"
FT /ligand_id="ChEBI:CHEBI:29103"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00596"
FT BINDING 216..239
FT /ligand="NADP(+)"
FT /ligand_id="ChEBI:CHEBI:58349"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00596"
SQ SEQUENCE 347 AA; 37139 MW; 71223D342F001B45 CRC64;
MRIEEDLKLG FKDVLIRPKR STLKSRSDVE LERQFTFKHS GQTWSGVPII AANMDTVGTF
EMAQALAGFD ILTAVHKHYT VEEWAAFINT ASADVLKHVM VSTGTSDADF EKTVQILALN
PALNFVCIDV ANGYSEHFVQ FVAKAREAWP TKTICAGNVV TGEMCEELIL SGADIVKVGI
GPGSVCTTRV KTGVGYPQLS AVIECADAAH GLGGMIVSDG GCTMPGDVAK AFGGGADFVM
LGGMLAGHEE SGGSVVEENG EKFMLFYGMS SESAMNRHVG GVAKYRAAEG KTVKLPLRGP
VGNTARDILG GLRSACTYVG ASRLKELTKR TTFIRVQEQE NRIFNSL