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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Multi-site H-bridge breathers in a DNA-shaped double strand
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Multi-site H-bridge breathers in a DNA-shaped double strand

机译：DNA形双链中的多站点H桥通气

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We investigate the formation process of nonlinear vibrational modes representing broad H-bridge multi-site breathers in a DNA-shaped double strand. Within it network model of the double helix we take individual motions of the bases within the base pair plane into account. The resulting H-bridge deformations may be asymmetric with respect to the helix axis. Furthermore the covalent bonds may be deformed distinctly in the two backbone strands. Unlike other authors that add different extra terms we limit the interaction to the hydrogen bonds within each base pair and the covalent bonds along each strand. In this way we intend to make apparent the effect of the characteristic helicoidal structure of DNA. We study the energy exchange processes related with the relaxation dynamics from a non-equilibrium conformation. It is demonstrated that the twist-opening relaxation dynamics of a radially distorted double helix attains an equilibrium regime characterized by it multi-site H-bridge breather. [References: 36]
机译：我们研究了DNA形双链中代表宽H桥多站点通气的非线性振动模式的形成过程。在它的双螺旋网络模型中，我们考虑了碱基对平面内碱基的各个运动。产生的H桥变形可能相对于螺旋轴不对称。此外，共价键可在两条主链中明显变形。与其他作者添加不同的额外术语不同，我们将相互作用限于每个碱基对内的氢键和沿每条链的共价键。这样，我们打算使DNA特有的螺旋结构的作用变得明显。我们研究了与非平衡构象的弛豫动力学有关的能量交换过程。结果表明，径向扭曲的双螺旋的扭曲张开松弛动力学达到了一种平衡态，其特征在于它具有多点H桥通气孔。 [参考：36]

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