MKP3 Antibody – Mouse Monoclonal

The protein encoded by this gene is a member of the dual specificity protein phosphatase subfamily. These phosphatases inactivate their target kinases by dephosphorylating both the phosphoserine/threonine and phosphotyrosine residues. They negatively regulate members of the mitogen-activated protein (MAP) kinase superfamily (MAPK/ERK, SAPK/JNK, p38), which are associated with cellular proliferation and differentiation. Different members of the family of dual specificity phosphatases show distinct substrate specificities for various MAP kinases, different tissue distribution and subcellular localization, and different modes of inducibility of their expression by extracellular stimuli. This gene product inactivates ERK2, is expressed in a variety of tissues with the highest levels in heart and pancreas, and unlike most other members of this family, is localized in the cytoplasm. Mutations in this gene have been associated with congenital hypogonadotropic hypogonadism. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Jan 2014]

MKP-3: a non-receptor, dual-specificity phosphoprotein phosphatase. Different members of the DUSP family show distinct substrate specificities for MAPKs, different tissue distribution and subcellular localization, and different modes of inducibility of their expression by extracellular stimuli. This protein inactivates ERK2, is expressed in a variety of tissues with the highest levels in heart and pancreas, and unlike most other members of this family, is localized in the cytoplasm. Two alternatively spliced isoforms have been described.

Protein type: Motility/polarity/chemotaxis; EC 3.1.3.16; Protein phosphatase, dual-specificity; EC 3.1.3.48

Chromosomal Location of Human Ortholog: 12q22-q23

Cellular Component: nucleoplasm; cytoplasm; cytosol

Molecular Function: protein tyrosine phosphatase activity; MAP kinase tyrosine/serine/threonine phosphatase activity

Biological Process: response to drug; nerve growth factor receptor signaling pathway; positive regulation of apoptosis; MyD88-independent toll-like receptor signaling pathway; stress-activated MAPK cascade; regulation of fibroblast growth factor receptor signaling pathway; toll-like receptor 3 signaling pathway; response to organic cyclic substance; toll-like receptor 10 signaling pathway; toll-like receptor 2 signaling pathway; toll-like receptor 5 signaling pathway; MyD88-dependent toll-like receptor signaling pathway; response to nitrosative stress; dorsal/ventral pattern formation; toll-like receptor signaling pathway; innate immune response; regulation of endodermal cell fate specification; toll-like receptor 9 signaling pathway; cell differentiation; toll-like receptor 4 signaling pathway; inactivation of MAPK activity

Disease: Hypogonadotropic Hypogonadism 19 With Or Without Anosmia