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GUAC_MESFL
ID   GUAC_MESFL              Reviewed;         320 AA.
AC   Q6F1U6;
DT   10-JUL-2007, integrated into UniProtKB/Swiss-Prot.
DT   16-AUG-2004, sequence version 1.
DT   03-AUG-2022, entry version 98.
DE   RecName: Full=GMP reductase {ECO:0000255|HAMAP-Rule:MF_01511};
DE            EC=1.7.1.7 {ECO:0000255|HAMAP-Rule:MF_01511};
DE   AltName: Full=Guanosine 5'-monophosphate oxidoreductase {ECO:0000255|HAMAP-Rule:MF_01511};
DE            Short=Guanosine monophosphate reductase {ECO:0000255|HAMAP-Rule:MF_01511};
GN   Name=guaC {ECO:0000255|HAMAP-Rule:MF_01511}; OrderedLocusNames=Mfl170;
OS   Mesoplasma florum (strain ATCC 33453 / NBRC 100688 / NCTC 11704 / L1)
OS   (Acholeplasma florum).
OC   Bacteria; Tenericutes; Mollicutes; Entomoplasmatales; Entomoplasmataceae;
OC   Mesoplasma.
OX   NCBI_TaxID=265311;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 33453 / NBRC 100688 / NCTC 11704 / L1;
RA   Birren B.W., Stange-Thomann N., Hafez N., DeCaprio D., Fisher S.,
RA   Butler J., Elkins T., Kodira C.D., Major J., Wang S., Nicol R., Nusbaum C.;
RL   Submitted (JUN-2004) to the EMBL/GenBank/DDBJ databases.
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_01511}.
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_01511};
CC   -!- SIMILARITY: Belongs to the IMPDH/GMPR family. GuaC type 2 subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_01511}.
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DR   EMBL; AE017263; AAT75527.1; -; Genomic_DNA.
DR   RefSeq; WP_011183067.1; NC_006055.1.
DR   RefSeq; YP_053411.1; NC_006055.1.
DR   AlphaFoldDB; Q6F1U6; -.
DR   SMR; Q6F1U6; -.
DR   STRING; 265311.Mfl170; -.
DR   EnsemblBacteria; AAT75527; AAT75527; Mfl170.
DR   GeneID; 2898130; -.
DR   KEGG; mfl:Mfl170; -.
DR   PATRIC; fig|265311.5.peg.171; -.
DR   eggNOG; COG0516; Bacteria.
DR   HOGENOM; CLU_022552_5_0_14; -.
DR   OMA; AYKEYFG; -.
DR   Proteomes; UP000006647; Chromosome.
DR   GO; GO:1902560; C:GMP reductase complex; IEA:InterPro.
DR   GO; GO:0003920; F:GMP reductase activity; IEA:UniProtKB-EC.
DR   GO; GO:0006163; P:purine nucleotide metabolic process; IEA:InterPro.
DR   CDD; cd00381; IMPDH; 1.
DR   Gene3D; 3.20.20.70; -; 1.
DR   HAMAP; MF_01511; GMP_reduct_type2; 1.
DR   InterPro; IPR013785; Aldolase_TIM.
DR   InterPro; IPR005994; GuaC_type_2.
DR   InterPro; IPR015875; IMP_DH/GMP_Rdtase_CS.
DR   InterPro; IPR001093; IMP_DH_GMPRt.
DR   Pfam; PF00478; IMPDH; 1.
DR   PIRSF; PIRSF036500; GMP_red_Firmic; 1.
DR   TIGRFAMs; TIGR01306; GMP_reduct_2; 1.
DR   PROSITE; PS00487; IMP_DH_GMP_RED; 1.
PE   3: Inferred from homology;
KW   NADP; Oxidoreductase; Reference proteome.
FT   CHAIN           1..320
FT                   /note="GMP reductase"
FT                   /id="PRO_0000294277"
FT   ACT_SITE        174
FT                   /note="Thioimidate intermediate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01511"
FT   BINDING         203..226
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01511"
SQ   SEQUENCE   320 AA;  35585 MW;  53933FE2937D8CCD CRC64;
     MYAFDYEDIQ LIPNMCVVNS RSECNTSVTL GKHTFKMPVV PANMATVINE ELSIMLAEKN
     YFYVMHRFDF DAVSFIKKMK EKKLISSISV GVKEQDFKMI NELTELNLIP DYITIDIAHG
     HANSVKEMIE HIRTKMGDQT FIIAGNVATP QAVRDLEHWG ADATKVGVGP GKVCITKLKT
     GFGTGGWQLG AIKWCSKAAT KPIIADGGLR VNGDIAKSIR FGATMCMIGS LFAAHEESPG
     KNVTVDNVLF KEYYGSASEY NKGEKRYVEG KKELIKVRGK LMDTYKEMEE DLQSSISYAG
     GKTLKAIKKV DYVILKTSNF
 
 
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