Department of Physics,Sharif University of Technology
In this paper, we try to explain the origin of the anomalous elastic behavior of nanometersized
DNA molecules, which has been observed in all-atom molecular dynamic simulations [A.K. Mazur,
Biophys. J. 2006]. It is shown that this anomalous behavior is a consequence of nonlocal interactions
between DNA base pairs and the intrinsic curvature of DNA. A nonlocal harmonic elastic rod model is
proposed, which can successfully describe the elastic behavior of short DNA molecules.