Interactions of a Tetraanionic Porphyrin with DNA: from a Z-DNA Sensor to a Versatile Supramolecular Device
Journal of the American Chemical Society2009Vol. 131(6), pp. 2046–2047
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Alessandro D’Urso, Angela Mammana, Milan Baláž, Andrea E. Holmes, Nina Berova, Rosaria Lauceri, Roberto Purrello
Abstract
The anionic nickel(II) porphyrin NiTPPS is able to selectively sense the spermine induced left-handed Z-form of DNA while it is completely silent in the presence of right-handed B-DNA. Interactions between the DNA and the porphyrin can be easily modulated by pH and temperature. The resulting Z-DNA-porphyrin-spermine complex behaves as a supramolecular reversible information storage system and as a reversible AND logic gate.
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