Further studies of an inactive form of a trypsin-like enzyme in rabbit testes |
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Authors: | S Meizel Y H Huang-Yang |
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Affiliation: | Department of Human Anatomy, University of California, Davis, California, 95616 USA |
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Abstract: | An inactive form of rabbit testicular trypsin-like activity was partially purified utilizing acid pH conditions for extraction, dialysis, and Sephadex gel filtration and ion-exchange chromatography. An inhibitor of the testicular trypsin-like activity was separated from the inactive form, but the latter still remained inactive until incubation with bovine pancreatic trypsin or “autoactivation” at pH 8. “Autoactivation” followed a sigmoidal time course and was not reversible. These results suggest the existence of a zymogen form of rabbit testicular trypsin-like activity. |
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