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Abstract Ubiquitin (Ub)-based probe Ub-7-amino-4-methylcoumarin is widely used to detect deubiquitinase (DUB) enzymatic activity, but its current synthesis procedures are cumbersome. In this work, we reported a new highly efficient… Click to show full abstract
Abstract Ubiquitin (Ub)-based probe Ub-7-amino-4-methylcoumarin is widely used to detect deubiquitinase (DUB) enzymatic activity, but its current synthesis procedures are cumbersome. In this work, we reported a new highly efficient semi-synthetic strategy to prepare Ub-AMC through two facile steps: first, preparation of Ub-thioester through hydrozinolysis-thioesterification of expressed Ub (1-G76C) mutant; second, direct aminolysis of Ub-thioester in a mixed-solvent system which exhibits very low hydrolysis.
Journal Title: Tetrahedron
Year Published: 2018
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