Eslami-Mossallam B, Ejtehadi M R
Department of Physics, Sharif University of Technology, P.O. Box 11365-8639, 14588-89694 Tehran, Iran.
Phys Rev E Stat Nonlin Soft Matter Phys. 2009 Jul;80(1 Pt 1):011919. doi: 10.1103/PhysRevE.80.011919. Epub 2009 Jul 24.
In this paper we consider the anharmonic corrections to the anisotropic elastic rod model for DNA. Our model accounts for the difference between the bending energies of positive and negative rolls, which comes from the asymmetric structure of the DNA molecule. We will show that the model can explain the high flexibility of DNA at small length scales, as well as kink formation at high deformation limit.
在本文中，我们考虑了对DNA各向异性弹性杆模型的非谐修正。我们的模型考虑了正向和负向卷曲弯曲能量之间的差异，这源于DNA分子的不对称结构。我们将证明，该模型可以解释DNA在小长度尺度下的高柔韧性，以及在高变形极限下的扭结形成。
