Theoretical investigation of nuclear quadrupole interactions in DNA at first-principles level

    Authors

    D. N. Mahato; A. Dubey; R. H. Pink; R. H. Scheicher; S. R. Badu; K. Nagamine; E. Torikai; H. P. Saha; L. Chow; M. B. Huang;T. P. Das

    Comments

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    Abbreviated Journal Title

    Hyperfine Interact.

    Keywords

    Nuclear quadrupole interactions; DNA; First principles; Physics, Atomic, Molecular & Chemical; Physics, Condensed Matter; Physics, Nuclear

    Abstract

    We have studied the nuclear quadrupole interactions (NQI) of the (14)N, (17)O and (2)H nuclei in the nucleobases cytosine, adenine, guanine and thymine in the free state as well as when they are bonded to the sugar ring in DNA, simulated through a CH(3) group attached to the nucleobases. The nucleobase uracil, which replaces thymine in RNA, has also been studied. Our results show that there are substantial indirect effects of the bonding with the sugar group in the nucleic acids on the NQI parameters e(2)qQ/h and eta. It is hoped that measurements of these NQI parameters in DNA will be available in the future to compare with our predictions. Our results provide the conclusion that for any property dependent on the electronic structures of the nucleic acids, the effects of the bonding between the nucleobases and the nucleic acid backbones have to be included.

    Journal Title

    Hyperfine Interactions

    Volume

    181

    Issue/Number

    1-3

    Publication Date

    1-1-2008

    Document Type

    Article

    Language

    English

    First Page

    81

    Last Page

    86

    WOS Identifier

    WOS:000260281100011

    ISSN

    0304-3843

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