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Dynamin GTPase activity increases when it oligomerizes either into helices in the presence of lipid templates or into rings in the presence of SH3 domain proteins. Dynasore is a dynamin inhibitor of moderate potency (IC50 ˜ 15 μM in vitro). We show that dynasore binds stoichiometrically to detergents used for in vitro drug screening, drastically reducing its potency (IC50 = 479 μM) and research tool...
The benzo[c]phenanthridines (BCPs) are a group of compounds that are believed to express their antitumor activity through the inhibition of topoisomerase I. The enzyme is crucial to cell cycle division and progression, and regulates the equilibrium between relaxed and supercoiled DNA that occurs during DNA replication. Over the years, we have prepared a number of BCPs and employed a number of biophysical...
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