PPM1D
Involved in the negative regulation of p53 expression. Required for the relief of p53-dependent checkpoint mediated cell cycle arrest. Binds to and dephosphorylates 'Ser-15' of TP53 and 'Ser-345' of CHEK1 which contributes to the functional inactivation of these proteins. Mediates MAPK14 dephosphorylation and inactivation. Is also an important regulator of global heterochromatin silencing and critical in maintaining genome integrity. Belongs to the PP2C family. Expressed in fetal and adult brain. Also detected in fetal liver and skeletal muscle, but not in their adult counterparts. 2 alternatively spliced human isoforms have been reported. Note: This description may include information from UniProtKB.
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Protein type: Cell cycle regulation; EC 3.1.3.16; Motility/polarity/chemotaxis; Nuclear receptor co-regulator; Protein phosphatase, Ser/Thr (non-receptor) |
Chromosomal Location of human Ortholog: 17q23.2 |
Cellular Component:
cytosol; nucleolus; nucleoplasm; nucleus
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Molecular Function:
metal ion binding; mitogen-activated protein kinase binding; myosin phosphatase activity; protein binding; protein serine/threonine kinase activity; protein serine/threonine phosphatase activity
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Biological Process:
cellular response to starvation; DNA damage response, signal transduction by p53 class mediator; DNA methylation; G2/M transition of mitotic cell cycle; heterochromatin formation; negative regulation of cell population proliferation; negative regulation of gene expression, epigenetic; peptidyl-threonine dephosphorylation; protein dephosphorylation; regulation of transcription initiation by RNA polymerase II; response to bacterium; response to radiation
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Disease: Breast Cancer; Intellectual Developmental Disorder With Gastrointestinal Difficulties And High Pain Threshold
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Reference #:
O15297
(UniProtKB)
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Alt. Names/Synonyms: IDDGIP; JDVS; p53-induced protein phosphatase 1; PP2C-delta; PPM1D; Protein phosphatase 1D; protein phosphatase 1D magnesium-dependent, delta isoform; protein phosphatase 2C delta isoform; Protein phosphatase 2C isoform delta; Protein phosphatase magnesium-dependent 1 delta; protein phosphatase Wip1; protein phosphatase, Mg2+/Mn2+ dependent 1D; protein phosphatase, Mg2+/Mn2+ dependent, 1D; wild-type p53-induced phosphatase 1; WIP1
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Gene Symbols: PPM1D
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Molecular weight:
66,675 Da
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Basal Isoelectric point:
9.14
Predict pI for various phosphorylation states
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Protein-Specific Antibodies, siRNAs or Recombinant Proteins from Cell Signaling Technology®
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