Effect of temperature on DNA condensation at single molecule level
Effect of temperature on DNA condensation at single molecule level
复制标题
温度对单分子水平 DNA 凝聚的影响
DOI:
10.1142/s0217984917501470
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发表时间:
2017-05
影响因子:
1.9
通讯作者:
周勋
中科院分区:
文献类型:
--
作者:
张敏;辜凌云;范洋涛;刘艳辉;周勋
DNA condensation by multivalent cations has been extensively studied using single molecule experiment methods. To detect temperature effect on DNA condensation at the single molecule level, a strong correlation model was developed to investigate the behavior of DNA with self-interactions under constant tension. The simulation results are in line with the single molecule experiment that the kinetics of DNA condensation take on discontinuous and stepwise manner regardless of the toroid or rod-like conformation. By incorporating the temperature dependence of DNA persistence length into the strong correlation model, the temperature effect on DNA condensation is identified. The results indicate that condensed DNA conformations at single molecule level become more compact with increasing temperature.
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