Title

First-principles study of muonium in A- and B-form DNA

Authors

Authors

R. H. Scheicher; T. P. Das; E. Torikai; F. L. Pratt;K. Nagamine

Comments

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Abbreviated Journal Title

Physica B

Keywords

first-principles calculations; muon spin relaxation; DNA; Physics, Condensed Matter

Abstract

We have carried out a systematic first-principles study of muonium (mu(+)e(-)) adducts in A- and B-form DNA. Potential trapping sites in the bases cytosine and thymine were considered. Our results indicate that the difference in structural geometry between A- and B-form DNA can lead to substantial deviations in the hyperfine fields at the mu(+) sites. This could have important implications for the interpretation of muon spin relaxation measurements that have shown evidence for an enhanced electron mobility in A-form DNA, but implicitly assume a negligible difference in the magnitude of the hyperfine fields at the trapped mu(+) site between A- and B-form DNA. (c) 2005 Elsevier B.V. All rights reserved.

Journal Title

Physica B-Condensed Matter

Volume

374

Publication Date

1-1-2006

Document Type

Article; Proceedings Paper

Language

English

First Page

448

Last Page

450

WOS Identifier

WOS:000236388800116

ISSN

0921-4526

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