ID A0A3D9HJB1_9FLAO Unreviewed; 346 AA.
AC A0A3D9HJB1;
DT 16-JAN-2019, integrated into UniProtKB/TrEMBL.
DT 16-JAN-2019, sequence version 1.
DT 27-MAR-2024, entry version 20.
DE RecName: Full=GMP reductase {ECO:0000256|HAMAP-Rule:MF_00596};
DE EC=1.7.1.7 {ECO:0000256|HAMAP-Rule:MF_00596};
DE AltName: Full=Guanosine 5'-monophosphate oxidoreductase {ECO:0000256|HAMAP-Rule:MF_00596};
DE Short=Guanosine monophosphate reductase {ECO:0000256|HAMAP-Rule:MF_00596};
GN Name=guaC {ECO:0000256|HAMAP-Rule:MF_00596};
GN ORFNames=DFQ02_102308 {ECO:0000313|EMBL:RED49534.1};
OS Seonamhaeicola aphaedonensis.
OC Bacteria; Bacteroidota; Flavobacteriia; Flavobacteriales;
OC Flavobacteriaceae.
OX NCBI_TaxID=1461338 {ECO:0000313|EMBL:RED49534.1, ECO:0000313|Proteomes:UP000256629};
RN [1] {ECO:0000313|EMBL:RED49534.1, ECO:0000313|Proteomes:UP000256629}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CECT 8487 {ECO:0000313|EMBL:RED49534.1,
RC ECO:0000313|Proteomes:UP000256629};
RA Whitman W.;
RT "Genomic Encyclopedia of Type Strains, Phase III (KMG-III): the genomes of
RT soil and plant-associated and newly described type strains.";
RL Submitted (JUL-2018) 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.
CC {ECO:0000256|ARBA:ARBA00037691, ECO:0000256|HAMAP-Rule:MF_00596,
CC ECO:0000256|RuleBase:RU003929}.
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;
CC Evidence={ECO:0000256|ARBA:ARBA00000930, ECO:0000256|HAMAP-
CC Rule:MF_00596, ECO:0000256|RuleBase:RU003929};
CC -!- SUBUNIT: Homotetramer. {ECO:0000256|HAMAP-Rule:MF_00596}.
CC -!- SIMILARITY: Belongs to the IMPDH/GMPR family. GuaC type 1 subfamily.
CC {ECO:0000256|HAMAP-Rule:MF_00596}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:RED49534.1}.
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DR EMBL; QRDX01000002; RED49534.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A3D9HJB1; -.
DR OrthoDB; 9805398at2; -.
DR Proteomes; UP000256629; Unassembled WGS sequence.
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; Aldolase class I; 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 NCBIfam; TIGR01305; GMP_reduct_1; 1.
DR PANTHER; PTHR43170; GMP REDUCTASE; 1.
DR PANTHER; PTHR43170:SF5; GMP REDUCTASE; 1.
DR Pfam; PF00478; IMPDH; 1.
DR PIRSF; PIRSF000235; GMP_reductase; 1.
DR SMART; SM01240; IMPDH; 1.
DR SUPFAM; SSF51412; Inosine monophosphate dehydrogenase (IMPDH); 1.
DR PROSITE; PS00487; IMP_DH_GMP_RED; 1.
PE 3: Inferred from homology;
KW Metal-binding {ECO:0000256|HAMAP-Rule:MF_00596,
KW ECO:0000256|PIRSR:PIRSR000235-3};
KW NADP {ECO:0000256|ARBA:ARBA00022857, ECO:0000256|HAMAP-Rule:MF_00596};
KW Oxidoreductase {ECO:0000256|ARBA:ARBA00023002, ECO:0000256|HAMAP-
KW Rule:MF_00596};
KW Potassium {ECO:0000256|ARBA:ARBA00022958, ECO:0000256|HAMAP-Rule:MF_00596};
KW Reference proteome {ECO:0000313|Proteomes:UP000256629}.
FT DOMAIN 9..338
FT /note="IMP dehydrogenase/GMP reductase"
FT /evidence="ECO:0000259|Pfam:PF00478"
FT ACT_SITE 186
FT /note="Thioimidate intermediate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00596,
FT ECO:0000256|PIRSR:PIRSR000235-1"
FT BINDING 108..131
FT /ligand="NADP(+)"
FT /ligand_id="ChEBI:CHEBI:58349"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00596"
FT BINDING 181
FT /ligand="K(+)"
FT /ligand_id="ChEBI:CHEBI:29103"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00596,
FT ECO:0000256|PIRSR:PIRSR000235-3"
FT BINDING 183
FT /ligand="K(+)"
FT /ligand_id="ChEBI:CHEBI:29103"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00596,
FT ECO:0000256|PIRSR:PIRSR000235-3"
FT BINDING 216..239
FT /ligand="NADP(+)"
FT /ligand_id="ChEBI:CHEBI:58349"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00596"
SQ SEQUENCE 346 AA; 37794 MW; 0D6A131E08E7F925 CRC64;
MRIEYDIKLG FKDVMIRPKR STLKSRSEVT LDREFKFLHS PITWSGIPIM AANMDTVGTF
DMAKALSSKK LFTAIHKHYS LADWNVFASN LSEDESKYIA VSTGISKQDF EKLNDILKFN
TNLKFICIDV ANGYSEHFTD FVRQTRKLYP SKVIIAGNVV TGEMVEELLL SGADIVKVGI
GPGSVCTTRI KTGVGYPQLS AIIECADAAH GLGGQIISDG GCSIPGDIAK AFGAGADFVM
LGGMLAGHDE SGGKKIEKNG KTYKQFYGMS SSTAMEKHIG GVADYRASEG KTVEVPYRGE
VESTVQDILG GLRSTCTYVG AKRLKELTKR TTFIRVAEQE NQTYSE
//
