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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 biological catalysts-catalysts are substances that increase the rate of chemical reactions without being used up. Enzymes are also proteins proteins: organic compounds made up of amino acid molecules.One of the three main food groups, proteins are needed by the body for cell growth and repair. that are folded into complex shapes that allow smaller molecules to fit into them.nzymes are also proteins proteins: organic compounds made up of amino acid molecules. One of the three main food groups, proteins are needed by the body for cell growth and repair. that are folded into complex shapes that allow smaller molecules to fit into them.