CDK (Cyclin-dependent kinase)

Cyclin-dependent kinases (CDKs) are enzymes that act as regulators within our cells, controlling the cell cycle—the process by which cells grow and divide. They work by attaching phosphate groups to specific proteins, effectively turning other proteins on or off at the right times. CDKs are activated when they bind to proteins called cyclins, which fluctuate in concentration during different cell cycle phases. This coordination ensures cells divide properly, maintaining healthy growth and tissue function. Disruptions in CDK activity can lead to uncontrolled cell growth, often seen in cancers.