Protein Kinase

Protein kinases are enzymes that modify other proteins by adding a phosphate group to them, a process called phosphorylation. This modification acts as a switch, turning proteins on or off, or altering their activity, location, or interactions with other molecules. Protein kinases are essential for regulating many cellular functions, including growth, division, and response to signals. They are vital for maintaining normal cell processes, and their dysfunction is often linked to diseases like cancer. In summary, protein kinases are key regulators that control how proteins behave within cells by adding phosphate groups.