Adiabatically bound valence anions of guanine

Maciej Haranczyk, Maciej Gutowski, Xiang Li, Kit H. Bowen

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

It is believed that guanine, a basic component of DNA and RNA, has the smallest affinity to an excess electron among all nucleic acid bases. Our experimental and computational findings indicate, however, that many so far neglected tautomers of guanine support adiabatically bound anionic states in the gas phase. The computed values of electron vertical detachment energy for the most stable anionic tautomers are within a broad range of the dominant feature of the photoelectron spectrum. We suggest that guanine might be the strongest excess electron acceptor among nucleic acid bases. Thus it might be critical to radiobiological damage of DNA and it might contribute to those chemical transformations of DNA that proceed through bound anionic states. © 2007 American Chemical Society.

Original languageEnglish
Pages (from-to)14073-14076
Number of pages4
JournalJournal of Physical Chemistry B
Volume111
Issue number51
DOIs
Publication statusPublished - 27 Dec 2007

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