Predicted to enable cyclin-dependent protein serine/threonine kinase regulator activity. Predicted to be involved in mitotic cell cycle phase transition. Predicted to be located in cytoplasm and nucleus. Predicted to be part of cyclin-dependent protein kinase holoenzyme complex. Human ortholog(s) of this gene implicated in several diseases, including Alzheimer's disease; Human papillomavirus infectious disease; cervix uteri carcinoma in situ; and endocrine gland cancer (multiple). Is an ortholog of human CCNI (cyclin I).