Abstract
Summary
1. An investigation was made to obtain information regarding the presence and localization of proteolytic enzymes in muscle protein fractions from frog leg muscles. 2. Pepsin and cathepsin were localized in the myosin fraction while trypsin was localized in the myosin-free fraction. No proteolytic activity was displayed by the myoalbumin fraction. 3. The myogen content of the frog muscles is considerably lower than that reported for mammals.
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