METHOD FOR SCREENING PROTEASE VARIANT AND OBTAINED PROTEASE VARIANT
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United States of America
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Jan 27, 2022
app pub date -
Jan 11, 2019
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Jan 11, 2019
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Abstract
The present invention relates to a method for screening a protease variant and the obtained protease variant, and the protease variant has a special performance. The method for screening the protease variant comprises the following steps: (1) constructing a protease random mutation library, optimizing a protease random mutation virus library, and optimizing a protease random mutation phage library; (2) for the protease random mutation library, optimizing the protease random mutation virus library, and optimizing the protease random mutation phage library and screening a protease variant having weak protease enzyme-cutting activity in a host or a similar condition and having protease enzyme-cutting activity in an in vitro denaturation condition; and (3) the step of optionally characterizing the protease variant, wherein the protease optimizes TEV protease or enterokinase. The protease variant in the present invention facilitates industrial production of protein.
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