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题名: Kink instability in circular DNA studied as Helfrich chiral chains
作者: Zhao, W ;  Zhou, HJ ;  Ou-Yang, ZC
刊名: PHYSICAL REVIEW E
出版日期: 1998
卷号: 58, 期号:6, 页码:8040-8043
关键词: SUPERCOILED DNA ;  ELASTIC MODEL ;  TORSIONAL RIGIDITY ;  LINEAR DNA ;  CLOSED DNA ;  MOLECULES
学科分类: Physics
通讯作者: Zhao, W , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
部门归属: Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Tsing Hua Univ, Ctr Adv Study, Beijing 100084, Peoples R China
英文摘要: The mechanism of kink instability observed in short DNA circles [W. Han et al., Nature (London) 386, 563 (1997)] has been analyzed based on the model of chiral elasticity for helical fibers proposed by Helfrich [Langmuir 7, 567 (1991)]. It is shown theoretically that the circle is the planar solution of the equilibrium shape equations derived within this model and its stability is studied as the function of the elastic moduli of DNA. It is found that above some thresholds of the chiral modulus, k(3), the circular DNA can be deformed into elliptical, triangular, square, or other polygonal shapes. The predicted shape transformation is found in good agreement with the above kink instability observed in DNA. [S1063-651X(98)03412-6].
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000077541900080
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/12225
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Zhao, W,Zhou, HJ,Ou-Yang, ZC. Kink instability in circular DNA studied as Helfrich chiral chains[J]. PHYSICAL REVIEW E,1998,58(6):8040-8043.
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