MAPK (Mitogen-activated protein kinase)

Mitogen-activated protein kinases (MAPK) are a group of proteins that play a crucial role in cell signaling. They help cells respond to various external signals, such as hormones or stress. When a signal is received, MAPK proteins become activated and trigger a series of reactions inside the cell, leading to important outcomes like growth, division, or even cell death. This signaling pathway is vital for many processes in the body, including development and how cells adapt to their environment. Dysregulation of MAPK pathways can lead to diseases, including cancer.