A dsDNA model optimized for electrokinetic applications.
A dsDNA model optimized for electrokinetic applications.
复制标题
针对电动应用优化的 dsDNA 模型
作者:
T. Rau;F. Weik;C. Holm
We present a coarse-grained (CG) model of a charged double-stranded DNA immersed in an electrolyte solution that can be used for a variety of electrokinetic applications. The model is based on an earlier rigid and immobile model of Weik et al. and includes now semi-flexibility and mobility, so that DNA dynamics can be sufficiently captured to simulate a full nanopore translocation process. To this end we couple the DNA hydrodynamically via a raspberry approach to a lattice-Boltzmann fluid and parametrize the counterions with a distant dependent friction. The electrokinetic properties of the CG DNA model inside an infinite cylinder is fitted against experimental data from Smeets et al. and all-atom simulation data from Kesselheim et al. The stiffness of our CG DNA is modeled via a harmonic angle potential fitted against experimental data of Brunet et al. Finally, the quality of our tuned parameters is tested by measuring the electrophoretic mobility of our DNA model for various numbers of base pairs and salt concentrations. Our results compare excellently with the experimental data sets of Stellwagen et al. and Hoagland et al.
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影响因子:
5.5
作者:
D. Hoagland;E. Arvanitidou;C. Welch
通讯作者:
C. Welch
影响因子:
8.6
作者:
V. Lobaskin;B. Dünweg;M. Medebach;T. Palberg;Christian Holm-
通讯作者:
V. Lobaskin;B. Dünweg;M. Medebach;T. Palberg;Christian Holm-
影响因子:
8.6
作者:
S. Raafatnia;O. A. Hickey;C. Holm
通讯作者:
C. Holm
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
K. Grass;Christian Holm
通讯作者:
Christian Holm
影响因子:
4.4
作者:
Fischer, Lukas P.;Peter, Toni;de Graaf, Joost
通讯作者:
de Graaf, Joost