Cyclin-dependent kinase (CDK)

Cyclin-dependent kinases (CDKs) are essential enzymes in our bodies that regulate the cell cycle, the process by which cells grow and divide. They act as checkpoints, ensuring that each stage of cell division occurs in the correct order. CDKs become active when they bind to specific proteins called cyclins, which vary depending on the cell cycle phase. This activation triggers the necessary actions for cell progression, such as DNA replication or division. Proper regulation of CDKs is vital for normal growth and tissue maintenance; dysfunction can lead to issues like uncontrolled cell growth, seen in cancer.