TAK1: a protein kinase of the MLK family. Mediates signal transduction induced by TGF beta and morphogenetic protein (BMP), and controls a variety of cell functions including transcription regulation and apoptosis. In response to IL-1, forms a kinase complex including TRAF6, MAP3K7P1/TAB1 and MAP3K7P2/TAB2; this complex is required for the activation of nuclear factor kappa B. Also activates MAPK8/JNK, MAP2K4/MKK4, and thus plays a role in the cell response to environmental stresses. Four alternatively spliced isoforms have been reported. Three splice variant isoforms have been described.
Protein type: EC 2.7.11.25; Kinase, protein; MLK family; Protein kinase, Ser/Thr (non-receptor); Protein kinase, TKL; TAK1 subfamily; TKL group
Chromosomal Location of Human Ortholog: 6q15
Cellular Component: cytosol; endosome membrane; IkappaB kinase complex; nucleus
Molecular Function: identical protein binding; MAP kinase kinase kinase activity; protein binding; protein kinase activity; protein serine/threonine kinase activity
Biological Process: activation of MAPK activity; activation of MAPKK activity; activation of NF-kappaB transcription factor; activation of NF-kappaB-inducing kinase; anoikis; I-kappaB kinase/NF-kappaB cascade; I-kappaB phosphorylation; JNK cascade; MyD88-dependent toll-like receptor signaling pathway; positive regulation of I-kappaB kinase/NF-kappaB cascade; positive regulation of interleukin-2 production; positive regulation of JNK activity; positive regulation of macroautophagy; positive regulation of T cell activation; positive regulation of T cell cytokine production; protein deubiquitination; stimulatory C-type lectin receptor signaling pathway; stress-activated MAPK cascade; T cell receptor signaling pathway; transforming growth factor beta receptor signaling pathway; Wnt receptor signaling pathway, calcium modulating pathway
Disease: Cardiospondylocarpofacial Syndrome; Frontometaphyseal Dysplasia 2
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