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End-to-end distance distribution of force stretched chains reconstruction by maximum-entropy method
Dai, LR; Liu, F; Ou-Yang, ZC
2004
Conference Name1st Cross Taiwan-strait Conference on Statistical Physics
Source PublicationINTERNATIONAL JOURNAL OF MODERN PHYSICS B
Volume18
Issue17-19
Pages2365-2375
Conference DateAUG 26-31, 2003
Conference PlaceYangzhou, PEOPLES R CHINA
Publication PlaceSINGAPORE
ISSN0217-9792
PublisherWORLD SCIENTIFIC PUBL CO PTE LTD
AbstractUsing the maximum-entropy method, the end-to-end distance distribution of the force stretched chain is calculated from the moments of the distribution, which can be obtained from the extension-force curves recorded in single-molecule experiments. If one knows force expansion of the extension through the (n - 1)th power of force, it is enough information to calculate the n moments of the distribution. The method is examined with force stretched chain models, Gaussian chain and excluded-volume chain on two-dimension lattice. The method reconstructs all distributions precisely. The method also is applied to force stretched complex chain molecules: the hairpin and secondary structure conformations. We find that the distributions of homogeneous chains of two conformations are very different: there axe two independent peaks in hairpin distribution; while only one peak is observed in the distribution of secondary structure conformations. Our discussion also shows that the end-to-end distance distribution may discover more critical physical information than the simpler extension-force curves can give.
KeywordSINGLE-STRANDED-DNA MOLECULES
DOI10.1142/S0217979204025397
URL查看原文
Indexed ByCPCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Applied ; Physics, Condensed Matter ; Physics, Mathematical
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Document Type会议论文
Identifierhttp://ir.itp.ac.cn/handle/311006/23721
CollectionSCI会议论文
Affiliation1.Chinese Acad Sci, Inst Theoret Phys, Interdisciplinary Ctr Theoret Studies, Beijing 100080, Peoples R China
2.Tsing Hua Univ, Ctr Adv Study, Beijing 100084, Peoples R China
Recommended Citation
GB/T 7714
Dai, LR,Liu, F,Ou-Yang, ZC. End-to-end distance distribution of force stretched chains reconstruction by maximum-entropy method[C]. SINGAPORE:WORLD SCIENTIFIC PUBL CO PTE LTD,2004:2365-2375.
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