a dual-specificity protein kinase of the STE7 family. Activates JNK1 and -2 by phosphorylating a Thr and a Tyr residue in the activation loop. Is activated by proinflammatory cytokines and environmental stress. Three alternatively spliced isoforms have been reported. Note: This description may include information from UniProtKB.
Protein type: EC 188.8.131.52; Kinase, protein; Protein kinase, STE; Protein kinase, dual-specificity (non-receptor); STE group; STE7 family
Molecular Function: ATP binding; enzyme binding; JUN kinase kinase activity; magnesium ion binding; MAP kinase kinase activity; mitogen-activated protein kinase kinase kinase binding; protein binding; protein C-terminus binding; protein kinase binding; protein phosphatase binding; receptor signaling protein serine/threonine kinase activity
Biological Process: activation of JNK activity; JNK cascade; positive regulation of neuron apoptosis; positive regulation of protein amino acid phosphorylation; positive regulation of telomerase activity; positive regulation of telomere maintenance via telomerase; protein amino acid phosphorylation; response to heat; response to osmotic stress; response to stress; response to UV; response to wounding; stress-activated MAPK cascade