Hydration of Drug−DNA Complexes: Greater Water Uptake for Adriamycin Compared to Daunomycin

Journal of Medicinal Chemistry
2008.0

Abstract

Water is an integral part of DNA, and the conserved water molecules at the binding sites can modulate drug binding to DNA or protein. We report here that anthracycline antitumor antibiotics, adriamycin (AM) and daunomycin (DM), binding to DNA is accompanied by different hydration changes, with AM binding resulting in the uptake of about twice as many water molecules as DM. These results indicate that water is playing an important role in drug binding to DNA.

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