A protein called the Sodium-Potassium ATPase (Na+/K+ ATPase) is essential for osmoregulation. This protein is located in the cell membrane of many cells and acts as a pump that regulates the movement of ions, such as sodium (Na+) and potassium (K+), in and out of cells. The Na+/K+ ATPase pump helps to maintain the concentration gradient of ions across the cell membrane, which is important for proper cell function. This pump uses energy from ATP to move three sodium ions out of the cell and two potassium ions into the cell, creating a concentration gradient that drives the movement of ions in and out of cells. This protein plays a crucial role in osmoregulation by regulating the concentration of ions in the body fluids and controlling the movement of water into and out of cells. The Na+/K+ ATPase pump helps to maintain the proper balance of water and electrolytes in the body, which is essential for overall health and well-being.