Predicted to enable cyclin-dependent protein serine/threonine kinase regulator activity. Predicted to be involved in mitotic cell cycle phase transition and regulation of cyclin-dependent protein serine/threonine kinase activity. Predicted to act upstream of or within regulation of cell cycle. Predicted to be part of cyclin-dependent protein kinase holoenzyme complex. Predicted to be active in cytoplasm and nucleus. Is expressed in cerebellum and retina layer. Orthologous to human CCNI (cyclin I). [provided by Alliance of Genome Resources, Apr 2022]