Solitonlike base pair opening in a helicoidal DNA: an analogy with a helimagnet and a cholesteric liquid crystal.
Solitonlike base pair opening in a helicoidal DNA: an analogy with a helimagnet and a cholesteric liquid crystal.
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DOI：
10.1103/physreve.79.012901
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发表时间：
2008-12
期刊：
影响因子：
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通讯作者：
M. Daniel;V. Vasumathi
中科院分区：
文献类型：
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作者：
M. Daniel;V. Vasumathi
我们提出了一个DNA动力学模型，通过引入螺旋结构，通过扭曲变形的helimagnet和一个螺旋液晶系统的结构类似。在这种情况下的动力学被发现是由完全可积的正弦戈登方程，它承认扭结antikink孤子的宽度增加，代表了一个宽的碱基对开放的DNA配置。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代表在DNA中的碱基对开放。
We propose a model for DNA dynamics by introducing the helical structure through twist deformation in analogy with the structure of a helimagnet and a 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.