PP2C Alpha/PPM1A (PPM1A) Antibody – Mouse Monoclonal

The protein encoded by this gene is a member of the PP2C family of Ser/Thr protein phosphatases. PP2C family members are known to be negative regulators of cell stress response pathways. This phosphatase dephosphorylates, and negatively regulates the activities of, MAP kinases and MAP kinase kinases. It has been shown to inhibit the activation of p38 and JNK kinase cascades induced by environmental stresses. This phosphatase can also dephosphorylate cyclin-dependent kinases, and thus may be involved in cell cycle control. Overexpression of this phosphatase is reported to activate the expression of the tumor suppressor gene TP53/p53, which leads to G2/M cell cycle arrest and apoptosis. Three alternatively spliced transcript variants encoding distinct isoforms have been described. [provided by RefSeq, Jul 2008]

PPPM1A: a Ser/Thr protein phosphatase of the PP2C family. Inhibits the activation of p38 and JNK kinase cascades induced by environmental stresses. Can also dephosphorylate cyclin-dependent kinases and may play a role in cell cycle control. Overexpression of this phosphatase activates the expression of p53, leading to G2/M cell cycle arrest and apoptosis.

Protein type: Motility/polarity/chemotaxis; Protein phosphatase, Ser/Thr (non-receptor); EC 3.1.3.16

Chromosomal Location of Human Ortholog: 14q23.1

Cellular Component: nucleoplasm; neuron projection; membrane; voltage-gated calcium channel complex; nucleus; cytosol

Molecular Function: protein C-terminus binding; protein binding; signal transducer activity; calmodulin-dependent protein phosphatase activity; manganese ion binding; magnesium ion binding; protein serine/threonine phosphatase activity

Biological Process: transcription initiation from RNA polymerase II promoter; N-terminal protein myristoylation; positive regulation of I-kappaB kinase/NF-kappaB cascade; Wnt receptor signaling pathway; transcription, DNA-dependent; positive regulation of transcription, DNA-dependent; negative regulation of transcription from RNA polymerase II promoter; negative regulation of NF-kappaB import into nucleus; negative regulation of I-kappaB kinase/NF-kappaB cascade; protein amino acid dephosphorylation; dephosphorylation; transforming growth factor beta receptor signaling pathway; insulin receptor signaling pathway; gene expression; cell cycle arrest; negative regulation of transforming growth factor beta receptor signaling pathway; positive regulation of Wnt receptor signaling pathway