Phosphorylation Cascade

A phosphorylation cascade is a process where one protein activates another through a transfer of phosphate groups, acting like a series of dominoes. When a signal, such as a hormone, triggers the first protein, it adds a phosphate group (phosphorylation), which then activates the next protein. This sequence continues, amplifying the initial message and resulting in an appropriate cellular response, such as Gene expression or cell division. It’s a way cells transmit and amplify signals efficiently, ensuring a rapid and controlled response to external stimuli.