Proteins that control the CELL DIVISION CYCLE. This family of proteins includes a wide variety of classes, including CYCLIN-DEPENDENT KINASES, mitogen-activated kinases, CYCLINS, and PHOSPHOPROTEIN PHOSPHATASES as well as their putative substrates such as chromatin-associated proteins, CYTOSKELETAL PROTEINS, and TRANSCRIPTION FACTORS.

Synonyms: Cell Cycle Regulatory Proteins, 0, cdc Proteins, Cell Division Cycle Proteins, Cell-Cycle Regulatory Proteins, Cell Cycle Proteins