Predicted to enable RNA polymerase II CTD heptapeptide repeat kinase activity and cyclin-dependent protein serine/threonine kinase activity. Predicted to be involved in positive regulation of apoptotic process; positive regulation of inflammatory response; and protein phosphorylation. Predicted to act upstream of or within phosphorylation. Predicted to be located in cytoplasm. Predicted to be part of mediator complex. Predicted to be active in cytosol and nucleus. Is expressed in endolymphatic appendage and otocyst. Human ortholog(s) of this gene implicated in developmental and epileptic encephalopathy 87. Orthologous to human CDK19 (cyclin dependent kinase 19). [provided by Alliance of Genome Resources, Apr 2022]