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题名: Temperature dependence of DNA condensation at high ionic concentration
作者: Mao, W ;  Cao, QQ ;  Liu, YH ;  Fan, YT ;  Hu, L ;  Xu, HQ
刊名: MODERN PHYSICS LETTERS B
出版日期: 2016
卷号: 30, 期号:21, 页码:1650298
关键词: DNA condensation ;  Monte Carlo simulation ;  persistence length ;  temperature
学科分类: Physics
DOI: http://dx.doi.org/10.1142/S0217984916502985
通讯作者: Liu, YH (reprint author), Guizhou Univ, Coll Sci, Guiyang 550025, Guizhou, Peoples R China. ;  Xu, HQ (reprint author), Guizhou Univ, Coll Anim Sci, Minist Educ, Key Lab Anim Genet Breeding & Reprod Plateau Moun, Guiyang 550025, Guizhou, Peoples R China. ;  Liu, YH (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
文章类型: Article
英文摘要: A series of experiments pointed out that compact states of DNA condensed by multivalent cation prefer higher temperature. The condensed DNA takes elongated coil or compact globule states and the population of the compact globule states increases with an increase in temperature. At the same time, a recent experimental work carried out in buffer solution without multivalent cation points out that DNA persistence length strongly depends on the temperature. DNA persistence length is a key parameter for quantitative interpretation of the conformational properties of DNA and related to the bending rigidity of DNA. It is necessary to revolve the effects of temperature dependence of persistence length on DNA condensation, and a model including the temperature dependence of persistence length and strong correlation of multivalent cation on DNA is provided. The autocorrelation function of the tangent vectors is found as an effective way to detect the temperature dependence of toroid conformations. With an increase in temperature, the first periodic oscillation in the autocorrelation function shifts left and the number of segments containing the first periodic oscillation decreases gradually. According to the experiments mentioned above, the long-axis length is defined to estimate the temperature dependence of condensation process further. At the temperatures defined in experiments mentioned above, the relation between long-axis length and temperature matches the experimental results.
类目[WOS]: Physics, Applied ;  Physics, Condensed Matter ;  Physics, Mathematical
关键词[WOS]: MULTIVALENT CATION ;  PERSISTENCE LENGTH ;  PHASE-TRANSITION ;  MOLECULES ;  POLYELECTROLYTE ;  THERMODYNAMICS
收录类别: SCI
项目资助者: National Natural Science Foundation of China [11047022, 11204045, 11464004, 31360215] ;  Research Foundation from Ministry of Education of China [212152] ;  Guizhou Provincial Tracking Key Program of Social Development [SY20123089, SZ20113069] ;  Natural Science Foundation of Guizhou Province [J20122166] ;  Research Foundation for Young University Teachers from Guizhou University [201311] ;  College Innovation Talent Team of Guizhou Province [(2014)32] ;  West Light Foundation
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21564
Appears in Collections:理论物理所2016年知识产出_期刊论文

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Recommended Citation:
Mao, W,Cao, QQ,Liu, YH,et al. Temperature dependence of DNA condensation at high ionic concentration[J]. MODERN PHYSICS LETTERS B,2016,30(21):1650298.
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