Overview
Killer Activated Receptors (KARs) and Killer Inhibitor Receptors (KIRs) are important molecules located on the surface of certain types of cells in the immune system. KARs are activated when they interact with molecules from their environment and cause the cells to become “killer” cells, which are able to recognize and destroy foreign or damaged cells. KIRs, on the other hand, act as inhibitors of KAR activation by suppressing the “killer” activity. Both KARs and KIRs play a key role in the immune system, helping it to respond to foreign invaders and damaged cells. They are also important for maintaining healthy tissue and preventing autoimmune diseases, in which the body’s own cells are targeted by its immune system. The research into KARs and KIRs is ongoing, and their significance and potential uses continue to be explored.