Enables protein C-terminus binding activity; protein kinase binding activity; and protein serine/threonine kinase activity. Involved in several processes, including negative regulation of protein phosphorylation; positive regulation of stress fiber assembly; and spermatogenesis. Located in perinuclear region of cytoplasm. Colocalizes with cytoplasmic vesicle. Orthologous to human TESK1 (testis associated actin remodelling kinase 1). [provided by Alliance of Genome Resources, Apr 2022]