Effect of helix angles on polaron motion in poly-DNA

Zhen Qu, Da wei Kang, Yuan Li, Wen Liu, De sheng Liu, Shi jie Xie*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

We investigate the effect of helix angles on polaron motion in poly-DNA in the framework of a tight binding model. A DNA molecule is supposed to have a uniform or a random distribution of the helix angles. It is found that a polaron moves faster along a DNA molecule with an overwinding helix than that with an unwinding one. In DNA molecule with randomly distributed helix angles, charge transport is suggested to be field-facilitated tunneling between spatial disordered potential wells.

Original languageEnglish (US)
Pages (from-to)6013-6018
Number of pages6
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume372
Issue number38
DOIs
StatePublished - Sep 15 2008

Keywords

  • Helix angle
  • Polaron motion
  • Poly-DNA

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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