Catalytic activity:ATP + a protein = ADP + a phosphoprotein. ,cofactor:Magnesium. ,Domain:The TXY motif contains the threonine and tyrosine residues whose phosphorylation activates the MAP kinases. ,enzyme regulation:Activated by threonine and tyrosine phosphorylation. ,Function:Phosphorylates microtubule-associated protein 2 (MAP2) . May promote entry in the cell cycle. ,PTM:Dually phosphorylated on Thr-626 and Tyr-628 , which activates the enzyme. ,similarity:Belongs to the protein kinase superfamily. CMGC Ser/Thr protein kinase family. MAP kinase subfamily. ,similarity:Contains 1 protein kinase domain. ,tissue specificity:Highest expression in the skeletal muscle , followed by the brain. Also found in heart , placenta , lung , liver , pancreas , kidney and skin fibroblasts. ,
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