RAF-MEK-ERK Pathway

The RAF-MEK-ERK pathway is a chain of signals inside cells that controls growth, division, and survival. When a specific signal, like a growth factor, binds to a cell's surface, it activates this pathway. RAF, MEK, and ERK are proteins that activate each other in sequence, transmitting the message from the outside to the nucleus. This process helps cells respond appropriately—dividing when needed or stopping if errors occur. Proper regulation of this pathway is vital; misregulation can lead to uncontrolled cell growth, contributing to cancer development.