Enables protein serine/threonine kinase activity. Acts upstream of or within protein phosphorylation and regulation of cell cycle. Predicted to be located in acrosomal vesicle; chromatin; and plasma membrane. Predicted to be part of PcG protein complex and protein kinase CK2 complex. Predicted to be active in cytosol and nucleus. Is expressed in several structures, including alimentary system; genitourinary system; integumental system; nervous system; and sensory organ. Used to study male infertility. Orthologous to human CSNK2A2 (casein kinase 2 alpha 2). [provided by Alliance of Genome Resources, Apr 2022]