Reviewed, UniProtKB/Swiss-Prot Q9AC20 (IPYR_CAUCR)

Names and origin

Protein names

Recommended name:
    Inorganic pyrophosphatase
    EC=3.6.1.1
Alternative name(s):
    Pyrophosphate phospho-hydrolase
      Short name=PPase

Gene names

Name:	ppa
Ordered Locus Names:	CC_0047

Organism

Caulobacter crescentus (Caulobacter vibrioides) [Complete proteome] [HAMAP]

Taxonomic identifier

155892 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Alphaproteobacteria › Caulobacterales › Caulobacteraceae › Caulobacter

Protein attributes

Sequence length	177 AA.
Sequence status	Complete.
Protein existence	Inferred from homology.

General annotation (Comments)

Catalytic activity	Diphosphate + H2O = 2 phosphate. HAMAP MF_00209
Cofactor	Binds 4 magnesium ions per subunit. Other metal ions can support activity, but at a lower rate. Two magnesium ions are required for the activation of the enzyme and are present before substrate binds, two additional magnesium ions form complexes with substrate and product By similarity. HAMAP MF_00209
Subcellular location	Cytoplasm By similarity HAMAP MF_00209.
Sequence similarities	Belongs to the PPase family.

Ontologies

Keywords
Cellular component	Cytoplasm
Ligand	Magnesium Metal-binding
Molecular function	Hydrolase
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	phosphate metabolic process Inferred from electronic annotation. Source: InterPro
Cellular component	cytoplasm Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular function	inorganic diphosphatase activity Inferred from electronic annotation. Source: HAMAP magnesium ion binding Inferred from electronic annotation. Source: HAMAP
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 177	177	Inorganic pyrophosphatase HAMAP MF_00209		PRO_0000137488
Sites
	Metal binding	66	1	Magnesium 1 By similarity
	Metal binding	71	1	Magnesium 1 By similarity
	Metal binding	71	1	Magnesium 2 By similarity
	Metal binding	103	1	Magnesium 1 By similarity

Sequences

	Sequence		Length	Mass (Da)
	Q9AC20-1 [UniParc]. Last modified June 1, 2001. Version 1. Checksum: C85804ABF568460A	FASTA	177	19,634
	10 20 30 40 50 60 MDLSKIAVGV NPPYDLNAII EIPQGGEPVK YEIDKESGAL MVDRFLHTAM FYPANYGFIP 70 80 90 100 110 120 HTLADDGDPA DIMVVGPTPV VPGAIIRCRP IGTLMMVDEA GSDEKILAVP VDKLHPFYTG 130 140 150 160 170 VTSWRDLPTI LTEQIAHFFQ HYKDLEKGKS TKISGWADPD ETAEIIRTAI KRYNESY

References

[1]

"Complete genome sequence of Caulobacter crescentus." Nierman W.C., Feldblyum T.V., Laub M.T., Paulsen I.T., Nelson K.E., Eisen J.A., Heidelberg J.F., Alley M.R.K., Ohta N., Maddock J.R., Potocka I., Nelson W.C., Newton A., Stephens C., Phadke N.D., Ely B., DeBoy R.T., Dodson R.J. , Durkin A.S., Gwinn M.L., Haft D.H., Kolonay J.F., Smit J., Craven M.B., Khouri H.M., Shetty J., Berry K.J., Utterback T.R., Tran K., Wolf A.M., Vamathevan J.J., Ermolaeva M.D., White O., Salzberg S.L., Venter J.C., Shapiro L., Fraser C.M. Proc. Natl. Acad. Sci. U.S.A. 98:4136-4141(2001) [PubMed: 11259647] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: ATCC 19089 / CB15.

Cross-references

Sequence databases
EMBL GenBank DDBJ	AE005673 Genomic DNA. Translation: AAK22035.1.
PIR	G87254.
RefSeq	NP_418867.1.
3D structure databases
SMR	Q9AC20. Positions 3-172.
ModBase	Search...
Genome annotation databases
GeneID	944103.
GenomeReviews	Gene locus CC_0047 in contig AE005673_GR.
KEGG	ccr:CC_0047.
NMPDR	fig|190650.1.peg.47.
TIGR	CC_0047.
Phylogenomic databases
HOGENOM	HBG529150.
OMA	EIDKDTG.
Enzyme and pathway databases
BRENDA	3.6.1.1. 2191.
Family and domain databases
HAMAP	MF_00209. Inorganic_PPase. [Tree]
InterPro	IPR008162. Pyrophosphatase. [Graphical view]
Gene3D	G3DSA:3.90.80.10. Pyrophosphatase. 1 hit.
PANTHER	PTHR10286. Pyrophosphatase. 1 hit.
Pfam	PF00719. Pyrophosphatase. 1 hit. [Graphical view]
PROSITE	PS00387. PPASE. False negative. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

IPYR_CAUCR

Accession

Primary (citable) accession number: Q9AC20

Entry history

Integrated into UniProtKB/Swiss-Prot:	June 20, 2002
Last sequence update:	June 1, 2001
Last modified:	January 19, 2010
This is version 51 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)