ID H9UL20_SPIAZ Unreviewed; 367 AA.
AC H9UL20;
DT 13-JUN-2012, integrated into UniProtKB/TrEMBL.
DT 13-JUN-2012, sequence version 1.
DT 27-MAR-2024, entry version 57.
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 OrderedLocusNames=Spiaf_2177 {ECO:0000313|EMBL:AFG38213.1};
OS Spirochaeta africana (strain ATCC 700263 / DSM 8902 / Z-7692).
OC Bacteria; Spirochaetota; Spirochaetia; Spirochaetales; Spirochaetaceae;
OC Spirochaeta.
OX NCBI_TaxID=889378 {ECO:0000313|EMBL:AFG38213.1, ECO:0000313|Proteomes:UP000007383};
RN [1] {ECO:0000313|Proteomes:UP000007383}
RP NUCLEOTIDE SEQUENCE.
RC STRAIN=ATCC 700263 / DSM 8902 / Z-7692
RC {ECO:0000313|Proteomes:UP000007383};
RX PubMed=23991249; DOI=10.4056/sigs.3607108;
RA Liolos K., Abt B., Scheuner C., Teshima H., Held B., Lapidus A., Nolan M.,
RA Lucas S., Deshpande S., Cheng J.F., Tapia R., Goodwin L.A., Pitluck S.,
RA Pagani I., Ivanova N., Mavromatis K., Mikhailova N., Huntemann M., Pati A.,
RA Chen A., Palaniappan K., Land M., Rohde M., Tindall B.J., Detter J.C.,
RA Goker M., Bristow J., Eisen J.A., Markowitz V., Hugenholtz P., Woyke T.,
RA Klenk H.P., Kyrpides N.C.;
RT "Complete genome sequence of the halophilic bacterium Spirochaeta africana
RT type strain (Z-7692(T)) from the alkaline Lake Magadi in the East African
RT Rift.";
RL Stand. Genomic Sci. 8:165-176(2013).
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 -!- 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};
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}.
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DR EMBL; CP003282; AFG38213.1; -; Genomic_DNA.
DR RefSeq; WP_014456196.1; NC_017098.1.
DR AlphaFoldDB; H9UL20; -.
DR STRING; 889378.Spiaf_2177; -.
DR KEGG; sfc:Spiaf_2177; -.
DR PATRIC; fig|889378.3.peg.2153; -.
DR eggNOG; COG0516; Bacteria.
DR HOGENOM; CLU_022552_5_3_12; -.
DR OrthoDB; 9805398at2; -.
DR Proteomes; UP000007383; 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; 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 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:UP000007383}.
FT DOMAIN 10..359
FT /note="IMP dehydrogenase/GMP reductase"
FT /evidence="ECO:0000259|Pfam:PF00478"
FT ACT_SITE 187
FT /note="Thioimidate intermediate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00596,
FT ECO:0000256|PIRSR:PIRSR000235-1"
FT BINDING 109..132
FT /ligand="NADP(+)"
FT /ligand_id="ChEBI:CHEBI:58349"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00596"
FT BINDING 182
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 184
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 217..240
FT /ligand="NADP(+)"
FT /ligand_id="ChEBI:CHEBI:58349"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00596"
SQ SEQUENCE 367 AA; 40575 MW; CEEEB9B82E27F0DC CRC64;
MLIEEGLRID FSDVLFKPMR STLRSRSEVQ LIRKMKFRHS PATWEGVPIM AANMDTTGTF
AIARKFMQYR MITTIHKHYT LDDWKAFLAD IDTAQAAEYV VPSMGTSDQD IQRIRELFAL
FPRFKFLCID VANGYSEFFS GFVRRIRQEF PEIILIAGNV VSGDMTQELI LSGADIVKVG
IGPGSACTTR IQTGVGMSQL SAIIDCANVA HGLDGQVIGD GGCTCPGDVA KAFGGGADFV
MIGGMFAGHD ESGGEMIEEV HQTSQMETDD NGTVIGPMYE TRRYKMFYGM SSKKANEKYA
GGLKDYRSSE GREVKIPYRG PIEATIIDLT GGLRSACTYV GARTIKDLPK CTTFVRVTTQ
YNTMYEK
//
