PTPA

Protein phosphatase 2A is one of the four major Ser/Thr phosphatases and is implicated in the negative control of cell growth and division. Protein phosphatase 2A holoenzymes are heterotrimeric proteins composed of a structural subunit A, a catalytic subunit C, and a regulatory subunit B. The regulatory subunit is encoded by a diverse set of genes that have been grouped into the B/PR55, B'/PR61, and B''/PR72 families. These different regulatory subunits confer distinct enzymatic specificities and intracellular localizations to the holozenzyme. The product of this gene belongs to the B' family. This gene encodes a specific phosphotyrosyl phosphatase activator of the dimeric form of protein phosphatase 2A. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jul 2008]

Description

Protein phosphatase 2 phosphatase activator

Tissue specificity

Low tissue specificity

Subcell location

Nucleoplasm, Cytosol

Predicted location

Intracellular

Protein family

Enzymes
Mapped to neXtProt
Mapped to UniProt SWISS-PROT
Plasma proteins
Predicted intracellular proteins
Protein evidence (Ezkurdia et al 2014)
Protein evidence (Kim et al 2014)

Chromosome

9 (129110950 - 129148946)

Ensembl ID

ENSG00000119383  (ver. 103.38)

Orthologs

Mouse Ptpa: ENSMUSG00000039515

UniProt

Q15257

neXtProt

NX_Q15257

Human splice variants
Mouse splice variants

Protein structure