Chk2

CHK2 (Checkpoint kinase 2) is an enzyme that helps protect cells from DNA damage. When DNA is injured, CHK2 acts like a quality control officer, detecting the damage and halting cell activities to allow repair. If the damage is too severe, CHK2 can signal the cell to stop dividing or even initiate programmed cell death to prevent faulty cells from causing problems like cancer. In essence, CHK2 plays a critical role in maintaining genetic stability by coordinating responses to DNA damage, helping ensure cells function properly and healthy tissues are maintained.