Abstract:
:The electronic structure of DNA is theoretically investigated by use of the coherent potential approximation. Even when the sequence of the four kinds of bases is nonperiodic, guanine block forms the persistent highest valence band edge, and adenine block forms the persistent lowest conduction band edge state. According to the calculated joint density-of-states energy profiles, the site first attacked by the lowest excitation is adenine block. After this excitation, electrons are generated at adenine sites, and holes are generated at guanine sites. The resulting electronic structures of the valence band and conduction band suggest that the base complementarity in DNA produces the complementarity in the density-of-states divergences of the excited electrons and holes. This complementarity lowers the excitation instability in the DNA chains.
journal_name
Math Bioscijournal_title
Mathematical biosciencesauthors
Takeda Kdoi
10.1016/0025-5564(94)00118-5subject
Has Abstractpub_date
1995-12-01 00:00:00pages
183-202issue
2eissn
0025-5564issn
1879-3134pii
0025556494001185journal_volume
130pub_type
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