Enables protein kinase binding activity and protein serine/threonine kinase activity. Involved in negative regulation of transcription by RNA polymerase II; protein phosphorylation; and regulation of sodium ion transport. Located in cytosol and nucleus. Human ortholog(s) of this gene implicated in developmental and epileptic encephalopathy 30. Orthologous to human SIK1 (salt inducible kinase 1). [provided by Alliance of Genome Resources, Apr 2022]