PPM1D Antibody – Rabbit Polyclonal

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. The expression of this gene is induced in a p53-dependent manner in response to various environmental stresses. While being induced by tumor suppressor protein TP53/p53, this phosphatase negatively regulates the activity of p38 MAP kinase, MAPK/p38, through which it reduces the phosphorylation of p53, and in turn suppresses p53-mediated transcription and apoptosis. This phosphatase thus mediates a feedback regulation of p38-p53 signaling that contributes to growth inhibition and the suppression of stress induced apoptosis. This gene is located in a chromosomal region known to be amplified in breast cancer. The amplification of this gene has been detected in both breast cancer cell line and primary breast tumors, which suggests a role of this gene in cancer development. [provided by RefSeq, Jul 2008]

PPM1D: a magnesium-dependent Ser/Thr phosphatase. A p53-induced phosphatase that interacts with the nuclear isoform of uracil DNA glycosylase, UNG2, and suppresses base excision repair. Might contribute to growth inhibitory pathways activated in response to DNA damage in a p53-dependent manner.

Protein type: Protein phosphatase, Ser/Thr (non-receptor); EC 3.1.3.16; Nuclear receptor co-regulator; Motility/polarity/chemotaxis; Cell cycle regulation

Chromosomal Location of Human Ortholog: 17q23.2

Cellular Component: nucleus

Molecular Function: protein binding; metal ion binding; protein serine/threonine phosphatase activity

Biological Process: negative regulation of cell proliferation; response to radiation; response to bacterium; G2/M transition of mitotic cell cycle; protein amino acid dephosphorylation

Disease: Breast Cancer