Modified proenzymes as substrates for proteolytic enzymes

Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving hydrolase

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435 24, 435212, 435215, 435217, 435218, 435219, 435 4, 435183, 435975, 435970, 435968, 530300, 530333, 530827, C12Q 137, C12Q 100, C12N 966, A61K 3800

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058112529

ABSTRACT:
Detection or determination of a protease in a sample by incubating the sample with a substrate of the protease and observing proteolytic cleavage of said substrate. The substrate is a modified proenzyme containing a recognition site, e.g., an activation site, cleavable by said protease. Proteolytic cleavage of the modified proenzyme is detected by observing the resulting activity using a suitable substrate of the activated proenzyme. The protease may be e.g. an aspartic protease or a metalloprotease, and the modified proenzyme e.g. pro-urokinase having a mutant activation site which is cleavable by the protease to be determined.

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