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: Protein kinase, dual-specificity (non-receptor); Kinase, protein; EC 18.104.22.168; Protein kinase, STE; STE group; STE7 family
Cellular Component: cytoplasm; cytosol; nucleus
Molecular Function: MAP kinase kinase activity; protein C-terminus binding; protein serine/threonine kinase activity; protein binding; protein-tyrosine kinase activity; magnesium ion binding; mitogen-activated protein kinase kinase kinase binding; JUN kinase kinase activity; protein kinase binding; protein phosphatase binding; ATP binding
SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.