noun
- an enzyme produced in the stomach that breaks down proteins during digestion
Usage: biochemistry
Examples
- Pepsin is secreted by cells in the stomach lining.
- The acidic environment of the stomach activates pepsin.
- Pepsin helps break down meat and other proteins we eat.
- Without pepsin, protein digestion would be much less efficient.
- The enzyme pepsin works best at a very low pH.
- Pepsin begins the process of protein breakdown in the digestive system.