Reviewed, UniProtKB/Swiss-Prot A8ALJ2 (GUAC_CITK8)

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:	CKO_03271

Organism

Citrobacter koseri (strain ATCC BAA-895 / CDC 4225-83 / SGSC4696) [Complete proteome] [HAMAP]

Taxonomic identifier

290338 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Gammaproteobacteria › Enterobacteriales › Enterobacteriaceae › Citrobacter

Protein attributes

Sequence length	347 AA.
Sequence status	Complete.
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. HAMAP MF_00596
Catalytic activity	Inosine 5'-phosphate + NH3 + NADP+ = guanosine 5'-phosphate + NADPH. HAMAP MF_00596
Subunit structure	Homotetramer By similarity. HAMAP MF_00596
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_1000025610
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)
	A8ALJ2-1 [UniParc]. Last modified October 23, 2007. Version 1. Checksum: 2F338597E56FF791	FASTA	347	37,358
	10 20 30 40 50 60 MRIEEDLKLG FKDVLIRPKR STLKSRSDVE LERQFTFKHS GQTWSGVPII AANMDTVGTF 70 80 90 100 110 120 EMASALASFD ILTAVHKHYS VEDWNAFTST ASEDVLRHVM VSTGTSDADF EKTKQILAQS 130 140 150 160 170 180 PALNFVCIDV ANGYSEHFVQ FVSKAREAWP TKTICAGNVV TGEMCEELVL SGADIVKVGI 190 200 210 220 230 240 GPGSVCTTRV KTGVGYPQLS AVIECADAAH GLGGMIVSDG GCTMPGDVAK AFGGGADFVM 250 260 270 280 290 300 LGGMLAGHEE SGGKIVEENG EKFMLFYGMS SESAMTRHVG GVAQYRAAEG KTVKLPLRGP 310 320 330 340 VEYTARDILG GLRSACTYVG ASRLKELTKR TTFIRVQEQE NRVFNSL

References

[1]	McClelland M., Sanderson E.K., Porwollik S., Spieth J., Clifton W.S., Latreille P., Courtney L., Wang C., Pepin K., Bhonagiri V., Nash W., Johnson M., Thiruvilangam P., Wilson R. Submitted (AUG-2007) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases
EMBL GenBank DDBJ	CP000822 Genomic DNA. Translation: ABV14355.1.
RefSeq	YP_001454791.1.
3D structure databases
SMR	A8ALJ2. Positions 3-338.
ModBase	Search...
Protein-protein interaction databases
STRING	A8ALJ2.
Genome annotation databases
GeneID	5582795.
GenomeReviews	Gene locus CKO_03271 in contig CP000822_GR.
KEGG	cko:CKO_03271.
Organism-specific databases
CMR	Search...
Phylogenomic databases
eggNOG	COG0516.
HOGENOM	HBG298985.
OMA	FRNSKQM.
Family and domain databases
HAMAP	MF_00596. GMP_reduct_type1. [Tree]
InterPro	IPR013785. Aldolase_TIM. IPR005993. GMP_reduct1. IPR015875. IMP_DH/GMP_Rdtase_CS. IPR001093. IMP_DH_GMPRt. [Graphical view]
Gene3D	G3DSA:3.20.20.70. Aldolase_TIM. 1 hit.
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_CITK8

Accession

Primary (citable) accession number: A8ALJ2

Entry history

Integrated into UniProtKB/Swiss-Prot:	January 15, 2008
Last sequence update:	October 23, 2007
Last modified:	February 9, 2010
This is version 18 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)