Reviewed, UniProtKB/Swiss-Prot A4W6K6 (GUAC_ENT38)

Names and origin

Protein names

Recommended name:
    GMP reductase
    EC=1.7.1.7
Alternative name(s):
    Guanosine 5'-monophosphate oxidoreductase
      Short name=Guanosine monophosphate reductase

Gene names

Name:	guaC
Ordered Locus Names:	Ent638_0649

Organism

Enterobacter sp. (strain 638) [Complete proteome] [HAMAP]

Taxonomic identifier

399742 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Gammaproteobacteria › Enterobacteriales › Enterobacteriaceae › Enterobacter

Protein attributes

Sequence length	347 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
Protein existence	Inferred from homology.

General annotation (Comments)

Function	Catalyzes the irreversible NADPH-dependent deamination of GMP to IMP. It functions in the conversion of nucleobase, nucleoside and nucleotide derivatives of G to A nucleotides, and in maintaining the intracellular balance of A and G nucleotides By similarity.
Catalytic activity	Inosine 5'-phosphate + NH3 + NADP+ = guanosine 5'-phosphate + NADPH. HAMAP MF_00596
Subunit structure	Homotetramer By similarity.
Sequence similarities	Belongs to the IMPDH/GMPR family. GuaC type 1 subfamily.

Ontologies

Keywords
Ligand	Metal-binding NADP Potassium
Molecular function	Oxidoreductase
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	oxidation reduction Inferred from electronic annotation. Source: UniProtKB-KW purine nucleotide metabolic process Inferred from electronic annotation. Source: HAMAP
Molecular function	GMP reductase activity Inferred from electronic annotation. Source: HAMAP potassium ion binding Inferred from electronic annotation. Source: UniProtKB-KW
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 347	347	GMP reductase HAMAP MF_00596		PRO_1000061237
Regions
	Nucleotide binding	108 – 131	24	NADP By similarity
	Nucleotide binding	216 – 239	24	NADP; ribose moiety By similarity
Sites
	Active site	186	1	Thioimidate intermediate By similarity
	Metal binding	181	1	Potassium; via carbonyl oxygen By similarity
	Metal binding	183	1	Potassium; via carbonyl oxygen By similarity

Sequences

	Sequence		Length	Mass (Da)
	A4W6K6-1 [UniParc]. Last modified May 29, 2007. Version 1. Checksum: D37597A3D7C86A9A	FASTA	347	37,211
	10 20 30 40 50 60 MRIEEDLKLG FKDVLIRPKR STLKSRSDVE LERQFTFKHS GQTWSGVPII AANMDTVGTF 70 80 90 100 110 120 AMATALASFD ILTAVHKHYS VEEWNAFAAS ASADVLKHVM VSTGTSDTDF EKTKQILIAN 130 140 150 160 170 180 PALNFLCIDV ANGYSEHFVQ FVSKAREAWP DKTIIAGNVV TGEMCEELIL AGADIVKVGI 190 200 210 220 230 240 GPGSVCTTRV KTGVGYPQLS AVIECADAAH GLGGQIISDG GCTMPGDVAK AFGGGADFVM 250 260 270 280 290 300 LGGMLAGHEE SGGTVVEENG EKFMLFYGMS SESAMNRHVG GVAQYRAAEG KTVKLPLRGP 310 320 330 340 VENTARDVMG GLRSACTYVG ASRLKELTKR TTFIRVQEQE NRIFNSL

References

[1]

"Complete sequence of chromosome of Enterobacter sp. 638." Copeland A., Lucas S., Lapidus A., Barry K., Glavina del Rio T., Dalin E., Tice H., Pitluck S., Kiss H., Brettin T., Bruce D., Detter J.C., Han C., Tapia R., Gilna P., Schmutz J., Larimer F., Land M. , Hauser L., Kyrpides N., Kim E., Taghavi S., Newman L., Vangronsveld J., van der Lelie D., Richardson P. Submitted (APR-2007) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases
EMBLGenBankDDBJ	CP000653 Genomic DNA. Translation: ABP59336.1.
RefSeq	YP_001175387.1.
3D structure databases
ModBase	Search...
Genome annotation databases
GeneID	5113688.
GenomeReviews	Gene locus Ent638_0649 in contig CP000653_GR.
KEGG	ent:Ent638_0649.
NMPDR	fig|399742.4.peg.702.
Organism-specific databases
CMR	Search...
Phylogenomic databases
OMA	A4W6K6. NSRSECD.
Family and domain databases
HAMAP	MF_00596. [Tree]
InterPro	IPR005993. GMP_reduct1. IPR015875. IMP_DH/GMP_Rdtase_CS. IPR001093. IMP_DH_GMPRt. [Graphical view]
Pfam	PF00478. IMPDH. 1 hit. [Graphical view]
PIRSF	PIRSF000235. GMP_reductase. 1 hit.
TIGRFAMs	TIGR01305. GMP_reduct_1. 1 hit.
PROSITE	PS00487. IMP_DH_GMP_RED. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

GUAC_ENT38

Accession

Primary (citable) accession number: A4W6K6

Entry history

Integrated into UniProtKB/Swiss-Prot:	February 5, 2008
Last sequence update:	May 29, 2007
Last modified:	June 16, 2009
This is version 16 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HAMAP (High-quality Automated and Manual Annotation of microbial Proteomes)