(1) Rennin is an acid protease , meaning it breaks down protein bonds in an acidic environment.(2) For instance, the set of enzymes known as serine proteases are protein-digesting enzymes in the intestine.(3) Although starches and fats can be broken down without pancreatic enzymes, pancreatic proteases are crucial for protein digestion.(4) Whey contains many types of enzymes, including hydrolases, transferases, lyases, proteases , and lipases.(5) All of the serine proteases and the zinc peptidases of pancreatic secretions are produced in the form of their respective proenzymes.
