Enables cyclin-dependent protein serine/threonine kinase activity and protein kinase binding activity. Acts upstream of or within several processes, including T cell proliferation; negative regulation of transcription by RNA polymerase II; and regulation of insulin receptor signaling pathway. Located in cytoplasm and nucleus. Is expressed in several structures, including central nervous system; embryo mesenchyme; extraembryonic component; eye; and gonad. Orthologous to human CCND3 (cyclin D3). [provided by Alliance of Genome Resources, Apr 2022]