Predicted to enable cyclin-dependent protein serine/threonine kinase regulator activity. Predicted to be involved in positive regulation of cyclin-dependent protein serine/threonine kinase activity. Predicted to act upstream of or within flagellated sperm motility; regulation of protein kinase activity; and spermatogenesis. Predicted to be located in membrane. Predicted to be active in cytoplasm and plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]