Enables protein serine/threonine kinase activity and protein tyrosine kinase activity. Acts upstream of or within peptidyl-tyrosine phosphorylation and protein autophosphorylation. Located in nucleus. Is expressed in several structures, including endocrine gland; gonad; hemolymphoid system gland; liver; and tongue. Orthologous to human CLK4 (CDC like kinase 4). [provided by Alliance of Genome Resources, Apr 2022]