Predicted to enable cyclin-dependent protein serine/threonine kinase regulator activity. Acts upstream of or within several processes, including T cell homeostasis; meiosis I cell cycle process; and thymus development. Located in cytoplasm and membrane. Is expressed in several structures, including blastocyst; central nervous system; early embryo; gonad; and placenta. Orthologous to human CCNB2 (cyclin B2). [provided by Alliance of Genome Resources, Apr 2022]