Serpin (serine protease inhibitor)

Serpins, or serine protease inhibitors, are a group of proteins that regulate enzymes called serine proteases, which are responsible for breaking down other proteins in the body. They act as molecular "breaks," controlling processes like blood clotting, inflammation, and immune responses. When a serine protease is active, the serpin binds to it and inactivates it, preventing excessive or harmful activity. This regulation is vital for maintaining health and preventing conditions like bleeding disorders or inflammation. In essence, serpins help balance enzyme activity to keep biological processes functioning smoothly.