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A: The enzymes that break down protein include trypsin, chymotrypsin, pepsin, thermolysin, glutamyl endopeptidase, elastase, bromelain and papain. Trypsin, pepsin, elastase, thermolysin, glutamyl, endopeptidase and chymotrypsin are made in the human body. Bromelain comes from pineapples and papain comes from papayas.
Enzymes are a type of protein that catalyse chemical reactions. They speed up the reaction by lowering the activation energy. This is the amount of energy needed to begin the â¦reaction. 6 people found this useful.