a dual-specificity protein kinase of the STE7 kinase family. Phosphorylated and activated by Raf and Mos kinases. Phosphorylates a Thr and a Tyr residue in a Thr-Glu-Tyr sequence located in the activation loop of ERK2 and ERK3. A component of MAP kinase signal transduction pathways involved in mitogen growth factor signal transduction. Note: This description may include information from UniProtKB.
Protein type: EC 220.127.116.11; Kinase, protein; Protein kinase, STE; Protein kinase, dual-specificity (non-receptor); STE group; STE7 family
Cellular Component: cytoplasm; cytosol; early endosome; endoplasmic reticulum; focal adhesion; Golgi apparatus; intercellular junction; internal side of plasma membrane; late endosome; microtubule; mitochondrion; nucleus; perinuclear region of cytoplasm; peroxisomal membrane
Molecular Function: MAP kinase kinase activity; PDZ domain binding; protein binding; protein serine/threonine kinase activator activity; protein serine/threonine kinase activity; protein serine/threonine/tyrosine kinase activity; receptor signaling protein serine/threonine kinase activity
Biological Process: activation of MAPK activity; MAPKKK cascade; positive regulation of transcription, DNA-dependent; regulation of stress-activated MAPK cascade