Checkpoint kinase 2 (CHK2)

Checkpoint kinase 2 (CHK2) is a protein that plays a critical role in the cell's response to DNA damage. When cells experience issues, like broken DNA, CHK2 helps halt the cell cycle, allowing time for repairs or triggering programmed cell death if the damage is too severe. This process is crucial for maintaining healthy cell function and preventing the development of cancer. CHK2 acts as a checkpoint, ensuring that cells only grow and divide when they are healthy, thus protecting the body from potential harm caused by damaged or malfunctioning cells.