GUAC_STRPF
ID GUAC_STRPF Reviewed; 327 AA.
AC Q1J6M7;
DT 26-JUN-2007, integrated into UniProtKB/Swiss-Prot.
DT 26-JUN-2007, sequence version 2.
DT 03-AUG-2022, entry version 78.
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};
GN OrderedLocusNames=MGAS10750_Spy1006;
OS Streptococcus pyogenes serotype M4 (strain MGAS10750).
OC Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC Streptococcus.
OX NCBI_TaxID=370554;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=MGAS10750;
RX PubMed=16636287; DOI=10.1073/pnas.0510279103;
RA Beres S.B., Richter E.W., Nagiec M.J., Sumby P., Porcella S.F., DeLeo F.R.,
RA Musser J.M.;
RT "Molecular genetic anatomy of inter- and intraserotype variation in the
RT human bacterial pathogen group A Streptococcus.";
RL Proc. Natl. Acad. Sci. U.S.A. 103:7059-7064(2006).
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}.
CC -!- SEQUENCE CAUTION:
CC Sequence=ABF37956.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR EMBL; CP000262; ABF37956.1; ALT_INIT; Genomic_DNA.
DR RefSeq; WP_002989808.1; NC_008024.1.
DR AlphaFoldDB; Q1J6M7; -.
DR SMR; Q1J6M7; -.
DR EnsemblBacteria; ABF37956; ABF37956; MGAS10750_Spy1006.
DR GeneID; 57852623; -.
DR KEGG; spi:MGAS10750_Spy1006; -.
DR HOGENOM; CLU_022552_5_0_9; -.
DR Proteomes; UP000002434; 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:0006163; P:purine nucleotide metabolic process; IEA:UniProtKB-UniRule.
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.
FT CHAIN 1..327
FT /note="GMP reductase"
FT /id="PRO_0000292058"
FT ACT_SITE 176
FT /note="Thioimidate intermediate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01511"
FT BINDING 205..228
FT /ligand="NADP(+)"
FT /ligand_id="ChEBI:CHEBI:58349"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01511"
SQ SEQUENCE 327 AA; 35960 MW; 993EAF9F6054AB68 CRC64;
MFNDIPVFDY EDIQLIPNKC IITSRSQADT SVTLGKYQFK LPVIPANMQT IIDETIAEQL
AKEGYFYIMH RFDEDSRKPF IKRMHEQGLI ASISVGVKAY EYEFVTSLKE DTPEFITIDI
AHGHANSVID MIKHIKTELP ETFVIAGNVG TPEAVRELEN AGADATKVGI GPGKVCITKV
KTGFGTGGWQ LAALRWCAKA ARKPIIADGG IRTHGDIAKS IRFGASMVMI GSLFAGHIES
PGKTVEVNGE TFKEYYGSAS AYQKGEHKNV EGKKILLPTK GHLSDTLTEM QQDLQSSISY
AGGKDLDSLR HVDYVIVKNS IWNGDSI