Transport proteins are a class of proteins that facilitate the movement of molecules across cell membranes. These proteins play a crucial role in maintaining the homeostasis of cells by regulating the entry and exit of essential molecules such as nutrients, ions, and waste products. There are various types of transport proteins, including channels, carriers, and pumps, each with specific mechanisms for transporting molecules across membranes. Research in this area focuses on understanding the structure, function, and regulation of transport proteins, as well as their role in health and disease. By elucidating the mechanisms of transport proteins, researchers aim to develop new therapeutic strategies for treating various diseases and disorders.