Enables protein kinase binding activity and protein serine/threonine kinase activity. Involved in several processes, including negative regulation of cell growth involved in cardiac muscle cell development; nervous system development; and positive regulation of cell migration. Located in several cellular components, including Z disc; intercalated disc; and ruffle. Biomarker of brain ischemia. Human ortholog(s) of this gene implicated in breast cancer; renal cell carcinoma; and schizophrenia. Orthologous to human PAK1 (p21 (RAC1) activated kinase 1). [provided by Alliance of Genome Resources, Apr 2022]