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Metallointercalators as Probes of the DNA π-way

Arkin, Michelle R. and Jenkins, Yonchu and Murphy, Catherine J. and Turro, Nicholas J. and Barton, Jacqueline K. (1996) Metallointercalators as Probes of the DNA π-way. In: Mechanistic Bioinorganic Chemistry. Advances in Chemistry. No.246. American Chemical Society , Washington, DC, pp. 449-469. ISBN 9780841230620.

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This chapter describes efforts in our laboratory to characterize the role of double helical DNA in catalyzing electron-transfer reactions. Using intercalating metal complexes as donor and acceptor, we have shown that the luminescence of [Ru(phen)_2(dppz)]^(2+*) is efficiently quenched by [Rh(phi)_2(phen)]^(3+) in the presence of B-form DNA. Covalent attachment of these metal complexes to either ends of a short duplex leads to complete quenching of luminescence over a separation distance between intercalated donor and acceptor of >40Å. These results with metallointercalators point to the π-stacked array of heterocyclic DNA base pairs as an effective intervening medium for long-range electron transfer and provides a new approach in applying the DNA helical polymer as a "molecular wire."

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Barton, Jacqueline K.0000-0001-9883-1600
Additional Information:© 1995 American Chemical Society. Received for review August 23, 1993. Accepted revised manuscript December 21, 1993. Published in print 5 May 1996. We are grateful to the efforts of our collaborators and co-workers, as noted in the individual references. We acknowledge in particular the contributions of C. V. Kumar, who first discovered the remarkable efficiency of DNA in promoting reactions between transition metal complexes. We thank also Jay Winkler, who has provided expert technical assistance in the Beckman Institute laser laboratory. In addition we thank the National Institutes of Health, the National Science Foundation, the Air Force Office of Scientific Research, the Ralph M. Parsons Foundation, and the National Foundation for Cancer Research for financial support.
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Air Force Office of Scientific Research (AFOSR)UNSPECIFIED
Ralph M. Parsons FoundationUNSPECIFIED
National Foundation for Cancer ResearchUNSPECIFIED
Series Name:Advances in Chemistry
Issue or Number:246
Record Number:CaltechAUTHORS:20180406-080327207
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Official Citation:Metallointercalators as Probes of the DNA π-way Michelle R. Arkin, Yonchu Jenkins, Catherine J. Murphy, Nicholas J. Turro, and Jacqueline K. Barton Mechanistic Bioinorganic Chemistry. May 5, 1996, 449-469 DOI:10.1021/ba-1995-0246.ch017
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:85674
Deposited By: Ruth Sustaita
Deposited On:06 Apr 2018 16:13
Last Modified:15 Nov 2021 20:31

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