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学科主题: 物理化学
题名: Chiral elasticity of DNA
作者: Shen, Hujun1, 2;  Hricko, Patrick J.2;  Colina, Coray M.2;  Milner, Scott T.3
通讯作者: ScottTMilner
刊名: SOFT MATTER
发表日期: 2012
DOI: 10.1039/c2sm26123e
卷: 8, 期:39, 页:10090-10094
收录类别: SCI
文章类型: Article
部门归属: 11
项目归属: 1106
产权排名: 1,1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Materials Science, Multidisciplinary ;  Physics, Multidisciplinary ;  Polymer Science
研究领域[WOS]: Chemistry ;  Materials Science ;  Physics ;  Polymer Science
英文摘要: DNA is a chiral semiflexible polymer, so its bending Hamiltonian may contain nonlinear terms coupling the curvature kappa to the torsion tau, leading to an average torsion independent of curvature, with variance scaling as 1/kappa(2). We perform atomistic MD simulations of 31 base-pair DNA sequences with explicit solvent, in which thermal fluctuations cause the DNA to bend. We extract bending moduli by fitting to bending and torsional angle distributions. We find that chiral elasticity matters whenever DNA bends on a radius less than about 5 nm.
关键词[WOS]: NUCLEIC-ACIDS ;  ENTROPIC ELASTICITY ;  MOLECULAR-DYNAMICS ;  NUCLEOSOMAL DNA ;  IN-VITRO ;  FLEXIBILITY ;  SIMULATIONS ;  MECHANICS ;  ENERGIES ;  TENSION
语种: 英语
WOS记录号: WOS:000308882800017
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/118027
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Dalian Inst Chem Phys, Lab Mol Modeling & Design, Dalian 116023, Peoples R China
2.Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA
3.Penn State Univ, Dept Chem Engn, University Pk, PA 16802 USA

Recommended Citation:
Shen, Hujun,Hricko, Patrick J.,Colina, Coray M.,et al. Chiral elasticity of DNA[J]. SOFT MATTER,2012,8(39):10090-10094.
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