Abstract
Tyrosine sulfation is an important post-translational modification that enhances the inhibitory activity of hirudin. Herein, we developed a facile synthetic strategy to afford the sulfated hirudins with up to three modifications and in multi-milligram scales, after a single HPLC purification step. Through these synthetic proteins, a novel type of modulation mechanism exhibited by tyrosine sulfation was proposed, which would help to delineate the structure–function relationships in other sulfated proteins and more importantly, to serve as a basis for the development of related antithrombotic agents.
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