ATP-binding cassette (ABC) transporters

ATP-binding cassette (ABC) transporters are specialized proteins found in cell membranes that actively move a wide variety of molecules into and out of cells. They function using energy derived from ATP, a molecule that provides power for many cellular processes. These transporters play crucial roles in processes such as absorbing nutrients, removing waste, and defending against toxins. They are essential for maintaining cell health and function, and their activity is important in areas like drug resistance in cancer and the functioning of the immune system.