Compressed wormlike chain moving out of confined space: A model of DNA ejection from bacteriophage

Compressed wormlike chain moving out of confined space: A model of DNA ejection from bacteriophage
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压缩的蠕虫状链移出密闭空间:噬菌体喷射 DNA 的模型

DOI:
10.1007/s10409-012-0121-8
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发表时间:
2012-09
影响因子:
3.5
通讯作者:
Huajian Gao
Huajian Gao
中科院分区:
工程技术2区
文献类型:
--
作者:
Jizeng Wang;Long Li;Huajian Gao

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DNA从噬菌体排出的分子生物力学不仅对基本的生物学理解感兴趣,而且对实际应用感兴趣,例如设计先进的位点特异性和可控的药物递送系统。在本文中,我们分析了粘性运动的半柔性聚合物链出来的一个强限制的空间作为一个模型,调查的影响,各种结构的限制和摩擦阻力过程中遇到的DNA弹射过程。理论上预测的喷射速度,喷射时间,喷射长度,和其他物理参数,如噬菌体类型,总基因组长度和离子状态的外部缓冲溶液之间的关系,在文献中的vitroexperimental观察显示出良好的协议。
The molecular biomechanics of DNA ejection from bacteriophage is of interest to not only fundamental biological understandings but also practical applications such as the design of advanced site-specific and controllable drug delivery systems. In this paper, we analyze the viscous motion of a semiflexible polymer chain coming out of a strongly confined space as a model to investigate the effects of various structure confinements and frictional resistances encountered during the DNA ejection process. The theoretically predicted relations between the ejection speed, ejection time, ejection length, and other physical parameters, such as the phage type, total genome length and ionic state of external buffer solutions, show excellent agreement within vitroexperimental observations in the literature.
DOI: 10.1142/p673
发表时间: 2010-03
期刊: --
影响因子: --
作者:
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通讯作者: P. Stockley;R. Twarock
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发表时间: 2007-07
影响因子: 4.5
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