Protein kinase C

Protein kinase C (PKC) is a type of enzyme found in cells that plays a crucial role in various cellular functions. It is activated by signals, like growth factors or hormones, and helps regulate processes such as cell growth, division, and responses to stress. PKC adds a phosphate group to specific proteins, which can change how those proteins work, often acting like a switch that turns activities on or off. This regulation is vital for maintaining normal cell function, and abnormalities in PKC activity are linked to various diseases, including cancer and heart disease.