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arXiv 1705.04041cond-mat.softphysics.bio-ph
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随机交联的polymer模型

Randomly cross-linked polymer models

Ofir Shukron, David Holcman

摘要:

聚合物模型用于描述染色质,染色质可以通过结合分子在不同的空间尺度上折叠。通过折叠,染色质产生各种大小的环。我们在这里提出了一个随机交联(RCL)聚合物模型,其中单体对随机连接。我们得到的渐近公式的稳态方差,相遇概率,回转半径,瞬时位移和平均首次相遇时间之间的任何两个单体。分析结果证实了布朗模拟。最后,本研究结果可以用来提取最小数目的交联染色质区域从{构象捕获}数据。

英文摘要:

Polymer models are used to describe chromatin, which can be folded at different spatial scales by binding molecules. By folding, chromatin generates loops of various sizes. We present here a randomly cross-linked (RCL) polymer model, where monomer pairs are connected randomly. We obtain asymptotic formulas for the steady-state variance, encounter probability, the radius of gyration, instantaneous displacement and the mean first encounter time between any two monomers. The analytical results are confirmed by Brownian simulations. Finally, the present results can be used to extract the minimum number of cross-links in a chromatin region from {conformation capture} data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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