Pepsin: Class of enzymes
Pepsin is an enzyme.
It acts on proteins in the stomach, which has a low pH because of the Hydrochloric acid. It works best at a pH of about 1.5. It will not work at a pH above 6.
It was the first animal enzyme to be discovered. Theodor Schwann discovered it in 1836.
Pepsin is used to make cheese.
References
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