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  • Title: Interactions of a tetraanionic porphyrin with DNA: from a Z-DNA sensor to a versatile supramolecular device.
    Author: D'Urso A, Mammana A, Balaz M, Holmes AE, Berova N, Lauceri R, Purrello R.
    Journal: J Am Chem Soc; 2009 Feb 18; 131(6):2046-7. PubMed ID: 19159291.
    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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