Enables GTPase binding activity and protein serine/threonine kinase activity. Involved in several processes, including positive regulation of DNA biosynthetic process; positive regulation of dendritic spine morphogenesis; and positive regulation of fibroblast migration. Located in endosome. Human ortholog(s) of this gene implicated in non-syndromic X-linked intellectual disability 30. Orthologous to human PAK3 (p21 (RAC1) activated kinase 3). [provided by Alliance of Genome Resources, Apr 2022]