Enables protein kinase binding activity. Predicted to be involved in G1/S transition of mitotic cell cycle and regulation of cyclin-dependent protein serine/threonine kinase activity. Predicted to act upstream of or within several processes, including DNA metabolic process; homologous chromosome pairing at meiosis; and regulation of protein localization. Predicted to be part of cyclin E1-CDK2 complex and cyclin E2-CDK2 complex. Predicted to be active in centrosome; cytoplasm; and nucleus. Human ortholog(s) of this gene implicated in castration-resistant prostate carcinoma. Orthologous to human CCNE2 (cyclin E2). [provided by Alliance of Genome Resources, Apr 2022]