螺旋DNA中的类孤子碱基对开口：与helimagnet和胆甾类的类比
Soliton-like base pair opening in a helicoidal DNA: An analogy with helimagnet and cholesterics
摘要：
我们提出了一个DNA动力学模型，通过扭曲变形引入螺旋结构，类似于helimagnet和胆甾相液晶系统的结构。在这种情况下的动力学被发现是由完全可积的sine-Gordon方程，其中承认扭结-反扭结孤子与增加的宽度表示宽碱基对开放配置的DNA。结果表明，螺旋度引入了长度尺度的变化，从而提供了一个更好的表示在DNA中的碱基对开放。
英文摘要：
We propose a model for DNA dynamics by introducing the helical structure through twist deformation in analogy with the structure of helimagnet and cholesteric liquid crystal system. The dynamics in this case is found to be governed by the completely integrable sine-Gordon equation which admits kink-antikink solitons with increased width representing a wide base pair opening configuration in DNA. The results show that the helicity introduces a length scale variation and thus provides a better representation of the base pair opening in DNA.
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