Predicted to enable protein serine/threonine kinase activator activity and protein serine/threonine kinase activity. Predicted to be involved in positive regulation of nuclear cell cycle DNA replication and regulation of cell cycle phase transition. Predicted to act upstream of or within traversing start control point of mitotic cell cycle. Located in nucleus. Is expressed in several structures, including brain ventricular layer; early conceptus; genitourinary system; and gut. Orthologous to human DBF4 (DBF4 zinc finger). [provided by Alliance of Genome Resources, Apr 2022]