cAMP-dependent protein kinase

Cyclic AMP-dependent protein kinase, or PKA, is an enzyme that helps cells respond to signals like hormones. When a signal binds to a cell receptor, it often triggers the production of a molecule called cAMP inside the cell. cAMP then activates PKA, which in turn switches on or off various proteins, guiding processes like metabolism, gene expression, and cell growth. This pathway allows cells to quickly adapt to changes and maintain proper function. PKA is a key part of the cell’s signaling network, translating chemical signals into physical responses.