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PPA2
HPA
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  • PPA2
PROTEIN SUMMARY GENE INFORMATION RNA DATA ANTIBODY DATA
GENERAL INFORMATIONi

General description of the gene and the encoded protein(s) using information from HGNC and Ensembl, as well as predictions made by the Human Protein Atlas project.

Gene namei

Official gene symbol, which is typically a short form of the gene name, according to HGNC.

PPA2
Synonyms FLJ20459
Gene descriptioni

Full gene name according to HGNC.

Inorganic pyrophosphatase 2
Protein classi

Assigned HPA protein class(es) for the encoded protein(s).

Cancer-related genes
Disease related genes
Enzymes
Metabolic proteins
Plasma proteins
Potential drug targets
Predicted locationi

All transcripts of all genes have been analyzed regarding the location(s) of corresponding protein based on prediction methods for signal peptides and transmembrane regions.

  • Genes with at least one transcript predicted to encode a secreted protein, according to prediction methods or to UniProt location data, have been further annotated and classified with the aim to determine if the corresponding protein(s) are secreted or actually retained in intracellular locations or membrane-attached.

  • Remaining genes, with no transcript predicted to encode a secreted protein, will be assigned the prediction-based location(s).

The annotated location overrules the predicted location, so that a gene encoding a predicted secreted protein that has been annotated as intracellular will have intracellular as the final location.

Intracellular
Protein evidence Evidence at protein level (all genes)
GENE INFORMATIONi

Gene information from Ensembl and Entrez, as well as links to available gene identifiers are displayed here. Information was retrieved from Ensembl if not indicated otherwise.

Chromosome 4
Cytoband q24
Chromosome location (bp) 105369077 - 105474067
Number of transcriptsi

Number of protein-coding transcripts from the gene as defined by Ensembl.

9
Ensembl ENSG00000138777 (version 109)
Entrez gene 27068
HGNC HGNC:28883
UniProt Q9H2U2 (UniProt - Evidence at protein level)
neXtProt NX_Q9H2U2
GeneCards PPA2
Antibodypedia PPA2 antibodies


PROTEIN FUNCTION
Protein function (UniProt)i

Useful information about the protein provided by UniProt.

Hydrolyzes inorganic pyrophosphate 1. This activity is essential for correct regulation of mitochondrial membrane potential, and mitochondrial organization and function 2.... show less
Molecular function (UniProt)i

Keywords assigned by UniProt to proteins due to their particular molecular function.

Hydrolase
Ligand (UniProt)i

Keywords assigned by UniProt to proteins because they bind, are associated with, or whose activity is dependent of some molecule.

Magnesium, Metal-binding
Gene summary (Entrez)i

Useful information about the gene from Entrez

The protein encoded by this gene is localized to the mitochondrion, is highly similar to members of the inorganic pyrophosphatase (PPase) family, and contains the signature sequence essential for the catalytic activity of PPase. PPases catalyze the hydrolysis of pyrophosphate to inorganic phosphate, which is important for the phosphate metabolism of cells. Alternate transcriptional splice variants, encoding different isoforms, have been characterized. [provided by RefSeq, Jul 2008]... show less
PROTEIN INFORMATIONi

The protein information section displays alternative protein-coding transcripts (splice variants) encoded by this gene according to the Ensembl database.

The Splice variant identifier links to the Ensembl website protein summary for the selected splice variant. The data in the Swissprot and TrEMBL columns links to corresponding pages in the UniProt database.

The protein classes assigned to this protein are shown if expanding the data in the protein class column. Parent protein classes are in bold font and subclasses are listed under the parent class.

The length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide and number of predicted transmembrane region(s) according to in-house majority decision methods based on sets of predictors are also reported.
Splice variant SwissProt TrEMBL Protein class Gene ontology Length & mass Signal peptide
(predicted)
Transmembrane regions
(predicted)
PPA2-201
ENSP00000343885
ENST00000341695
Q9H2U2
[Direct mapping] Inorganic pyrophosphatase 2, mitochondrial
Show all
Enzymes
   ENZYME proteins
   Hydrolases
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Plasma proteins
Cancer-related genes
   Candidate cancer biomarkers
Disease related genes
Potential drug targets
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0000287 [magnesium ion binding]
GO:0004427 [inorganic diphosphate phosphatase activity]
GO:0004722 [protein serine/threonine phosphatase activity]
GO:0005737 [cytoplasm]
GO:0005739 [mitochondrion]
GO:0005759 [mitochondrial matrix]
GO:0005829 [cytosol]
GO:0006796 [phosphate-containing compound metabolic process]
GO:0016787 [hydrolase activity]
GO:0045202 [synapse]
GO:0046872 [metal ion binding]
GO:0051881 [regulation of mitochondrial membrane potential]
GO:0071344 [diphosphate metabolic process]
Show all
334 aa
37.9 kDa
No 0
PPA2-202
ENSP00000313061
ENST00000348706
Q9H2U2
[Direct mapping] Inorganic pyrophosphatase 2, mitochondrial
Show all
Enzymes
   ENZYME proteins
   Hydrolases
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Plasma proteins
Cancer-related genes
   Candidate cancer biomarkers
Disease related genes
Potential drug targets
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0000287 [magnesium ion binding]
GO:0004427 [inorganic diphosphate phosphatase activity]
GO:0005515 [protein binding]
GO:0005737 [cytoplasm]
GO:0005739 [mitochondrion]
GO:0005759 [mitochondrial matrix]
GO:0005829 [cytosol]
GO:0006796 [phosphate-containing compound metabolic process]
GO:0016787 [hydrolase activity]
GO:0046872 [metal ion binding]
GO:0051881 [regulation of mitochondrial membrane potential]
GO:0071344 [diphosphate metabolic process]
Show all
305 aa
34.7 kDa
No 0
PPA2-204
ENSP00000340352
ENST00000354147
Q9H2U2
[Direct mapping] Inorganic pyrophosphatase 2, mitochondrial
Show all
Enzymes
   ENZYME proteins
   Hydrolases
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Plasma proteins
Cancer-related genes
   Candidate cancer biomarkers
Disease related genes
Potential drug targets
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0000287 [magnesium ion binding]
GO:0004427 [inorganic diphosphate phosphatase activity]
GO:0005737 [cytoplasm]
GO:0005739 [mitochondrion]
GO:0005759 [mitochondrial matrix]
GO:0005829 [cytosol]
GO:0006796 [phosphate-containing compound metabolic process]
GO:0016787 [hydrolase activity]
GO:0046872 [metal ion binding]
GO:0051881 [regulation of mitochondrial membrane potential]
GO:0071344 [diphosphate metabolic process]
Show all
168 aa
18.9 kDa
No 0
PPA2-205
ENSP00000389957
ENST00000432483
Q9H2U2
[Direct mapping] Inorganic pyrophosphatase 2, mitochondrial
Show all
Enzymes
   ENZYME proteins
   Hydrolases
Metabolic proteins
   SPOCTOPUS predicted secreted proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Plasma proteins
Cancer-related genes
   Candidate cancer biomarkers
Disease related genes
Potential drug targets
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0000287 [magnesium ion binding]
GO:0004427 [inorganic diphosphate phosphatase activity]
GO:0005515 [protein binding]
GO:0005737 [cytoplasm]
GO:0005739 [mitochondrion]
GO:0005759 [mitochondrial matrix]
GO:0005829 [cytosol]
GO:0006796 [phosphate-containing compound metabolic process]
GO:0016787 [hydrolase activity]
GO:0046872 [metal ion binding]
GO:0051881 [regulation of mitochondrial membrane potential]
GO:0071344 [diphosphate metabolic process]
Show all
232 aa
26 kDa
No 0
PPA2-208
ENSP00000426347
ENST00000502596
D6RGI1
[Direct mapping] Inorganic diphosphatase
Show all
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0000287 [magnesium ion binding]
GO:0004427 [inorganic diphosphate phosphatase activity]
GO:0005737 [cytoplasm]
GO:0006796 [phosphate-containing compound metabolic process]
GO:0016787 [hydrolase activity]
GO:0046872 [metal ion binding]
Show all
88 aa
10.5 kDa
No 0
PPA2-212
ENSP00000421177
ENST00000504028
D6RGV9
[Direct mapping] Inorganic diphosphatase
Show all
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0000287 [magnesium ion binding]
GO:0004427 [inorganic diphosphate phosphatase activity]
GO:0005737 [cytoplasm]
GO:0006796 [phosphate-containing compound metabolic process]
GO:0016787 [hydrolase activity]
GO:0046872 [metal ion binding]
Show all
195 aa
22.1 kDa
No 0
PPA2-215
ENSP00000423889
ENST00000508518
H0Y9D8
[Direct mapping] Inorganic diphosphatase
Show all
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0000287 [magnesium ion binding]
GO:0004427 [inorganic diphosphate phosphatase activity]
GO:0005737 [cytoplasm]
GO:0006796 [phosphate-containing compound metabolic process]
GO:0016787 [hydrolase activity]
GO:0046872 [metal ion binding]
Show all
226 aa
25.5 kDa
No 0
PPA2-218
ENSP00000423363
ENST00000510015
D6R967
[Direct mapping] Inorganic diphosphatase
Show all
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0000287 [magnesium ion binding]
GO:0004427 [inorganic diphosphate phosphatase activity]
GO:0005737 [cytoplasm]
GO:0006796 [phosphate-containing compound metabolic process]
GO:0016787 [hydrolase activity]
GO:0046872 [metal ion binding]
Show all
191 aa
21.4 kDa
No 0
PPA2-222
ENSP00000427375
ENST00000515567
H0YAK2
[Direct mapping] Inorganic diphosphatase
Show all
Metabolic proteins
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0000287 [magnesium ion binding]
GO:0004427 [inorganic diphosphate phosphatase activity]
GO:0005737 [cytoplasm]
GO:0006796 [phosphate-containing compound metabolic process]
GO:0016787 [hydrolase activity]
GO:0046872 [metal ion binding]
Show all
69 aa
8 kDa
No 0

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