Enables protein serine/threonine kinase activity and protein tyrosine kinase activity. Involved in protein phosphorylation. Acts upstream of or within peptidyl-tyrosine phosphorylation and protein autophosphorylation. Located in nucleus. Is expressed in several structures, including cerebral cortex; craniocervical region bone; ganglia; neural retina; and thyroid gland. Orthologous to human CLK3 (CDC like kinase 3). [provided by Alliance of Genome Resources, Apr 2022]