CRYSTALLINE PEPSIN : VI. INACTIVATION BY BETA AND GAMMA RAYS FROM RADIUM AND BY ULTRA-VIOLET LIGHT |
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| Authors: | John H. Northrop |
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| Affiliation: | From the Laboratories of The Rockefeller Institute for Medical Research, Princeton, N. J. |
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| Abstract: | 1. The loss in activity of crystalline pepsin solutions when exposed to beta and gamma rays from radium or to ultra-violet light is accompanied by a corresponding decrease in pepsin protein. 2. The rate of inactivation by ultra-violet light depends upon the pH and is a maximum at about pH 2.0. |
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