👉 Phosphorylation is a process in which a protein's active site changes by adding or removing phosphate groups, often resulting in the activation of a particular biochemical reaction. This can be used to understand how proteins interact with their environment and regulate cellular functions. In biological systems, phosphorylation is typically associated with enzymes that catalyze reactions such as the formation of ATP (adenosine triphosphate) from ADP (adenosine diphosphate) and in certain cases, the phosphorylation