K-ATPase, also known as the Na+/K+-ATPase pump or sodium-potassium pump, is an essential membrane-bound enzyme found in the plasma membrane of cells. It plays a critical role in maintaining the electrochemical gradient across the cell membrane by actively transporting sodium (Na+) out of the cell and potassium (K+) into the cell. This active transport process is crucial for various cellular functions, including cell volume regulation, nerve impulse transmission, and muscle contraction.
