BH3-interacting domain

The BH3-interacting domain is a part of certain proteins that plays a crucial role in regulating cell survival and death. It acts like a switch that can initiate a process known as apoptosis, where damaged or unwanted cells are programmed to self-destruct. This domain helps proteins interact with others in the cell, particularly those involved in the balance between life and death. By doing so, it is essential in maintaining healthy cell populations and is important in areas like cancer research, as cancer cells often bypass these death signals to survive longer than they should.