Molecular dynamics simulations of polymer translocations

被引:28
作者
Randel, R [1 ]
Loebl, HC [1 ]
Matthai, CC [1 ]
机构
[1] Cardiff Univ, Dept Phys & Astron, Cardiff CF1 3NS, S Glam, Wales
关键词
DNA molecules; modeling; molecular dynamics; polymer translocation;
D O I
10.1002/mats.200300019
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Molecular dynamics simulation studies of the translocationof charged homopolymers of length, N, driven by an electric potential gradient through a channel have been performed. We find that the translocation time, tau, displays an inverse power dependence on the temperature of the simulation tau similar to (T - T-0)(-7/4), which is in very good agreement with experimental results. In addition, the dependence of tau on the driving field strength and the velocity of translocation on the polymer length N have also been obtained. The results suggest that such minimalist models are useful in modelling biological processes and that the molecular dynamics method is a suitable approach for carrying out these simulations.
引用
收藏
页码:387 / 391
页数:5
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