Inactivation of Enzyme-Substrate Films by Small Doses of X-Rays

Abstract
Pepsin-albumin films were inactivated by small doses of x-rays. Doses of about 100 r produced about 50% inactivation. The sensitivity to radiation depended on the physical configuration of the molecules. It was varied by surface compression. Calculations suggested that the effects of a single radiation event (ionization or radiacal production) may have spread to include a large number to enzyme molecules.

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