Enables protein kinase activity. Acts upstream of or within several processes, including negative regulation of B cell proliferation; regulation of germinal center formation; and spleen development. Located in cytoplasmic vesicle. Is expressed in several structures, including brown fat; genitourinary system; gut; nervous system; and vascular system. Orthologous to human PKN1 (protein kinase N1). [provided by Alliance of Genome Resources, Apr 2022]