CDK1, or Cyclin-Dependent Kinase 1, is a crucial enzyme that plays a key role in regulating the cell cycle, particularly during the transition from G2 phase to M phase. It is activated by binding to a specific protein called cyclin B, which helps control various processes necessary for cell division. This kinase is essential for the proper progression of mitosis, ensuring that cells divide accurately. Dysregulation of CDK1 can lead to issues such as uncontrolled cell growth, which is often associated with cancer. Understanding CDK1 is vital for developing targeted therapies in oncology.