ERK (extracellular signal-regulated kinase)

ERK, or extracellular signal-regulated kinase, is a protein involved in transmitting signals inside cells. These signals often originate from outside the cell, such as from growth factors or other stimuli. Once activated, ERK moves into the nucleus and influences the activity of genes, regulating processes like cell growth, division, and survival. It plays a critical role in how cells respond to their environment and helps coordinate proper cell function. Abnormal ERK activity is linked to diseases like cancer, making it a key target for medical research and drug development.