MEK3 Antibody – Rabbit Polyclonal

The protein encoded by this gene is a dual specificity protein kinase that belongs to the MAP kinase kinase family. This kinase is activated by mitogenic and environmental stress, and participates in the MAP kinase-mediated signaling cascade. It phosphorylates and thus activates MAPK14/p38-MAPK. This kinase can be activated by insulin, and is necessary for the expression of glucose transporter. Expression of RAS oncogene is found to result in the accumulation of the active form of this kinase, which thus leads to the constitutive activation of MAPK14, and confers oncogenic transformation of primary cells. The inhibition of this kinase is involved in the pathogenesis of Yersina pseudotuberculosis. Multiple alternatively spliced transcript variants that encode distinct isoforms have been reported for this gene. [provided by RefSeq, Jul 2008]

MKK3: a dual-specificity protein kinase of the STE7 family. Activates p38 MAP kinase by phosphorylating a Thr and a Tyr residue in the activation loop. Is activated by cytokines and environmental stress in vivo. A deletion and two point mutants found in colon cancer cell lines. Three splice-variant isoforms have been described.

Protein type: Protein kinase, dual-specificity (non-receptor); Protein kinase, STE; EC 2.7.12.2; Kinase, protein; STE group; STE7 family

Chromosomal Location of Human Ortholog: 17q11.2

Cellular Component: nucleoplasm; membrane; cytosol

Molecular Function: MAP kinase kinase activity; protein binding; protein-tyrosine kinase activity; protein kinase binding; ATP binding; receptor signaling protein serine/threonine kinase activity

Biological Process: peptidyl-tyrosine phosphorylation; activation of MAPK activity; positive regulation of transcription, DNA-dependent; MyD88-independent toll-like receptor signaling pathway; stress-activated MAPK cascade; pathogenesis; toll-like receptor 3 signaling pathway; signal transduction; toll-like receptor 2 signaling pathway; toll-like receptor 10 signaling pathway; MyD88-dependent toll-like receptor signaling pathway; toll-like receptor 5 signaling pathway; positive regulation of protein kinase activity; toll-like receptor signaling pathway; innate immune response; toll-like receptor 9 signaling pathway; inflammatory response; toll-like receptor 4 signaling pathway; regulation of cytokine biosynthetic process; cardiac muscle contraction