Stability of strong polyelectrolyte-macroion complexes

被引：10

作者：

Boroudjerdi, H ^{[1
]}

Netz, RR ^{[1
]}

机构：

[1] Tech Univ Munich, Dept Phys, D-85748 Garching, Germany

来源：

EUROPHYSICS LETTERS | 2005年 / 71卷 / 06期

关键词：

D O I：

10.1209/epl/i2005-10174-3

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the thermodynamic stability of complexes formed by one semi-flexible charged polymer wrapped around an oppositely charged sphere. Choosing parameters for DNA and histones, we determine all conformational eigen-modes and the corresponding eigen-value spectrum of the complexed chain, from which the free energy of complexation and thus the reaction constant is obtained. The resulting complexation diagram exhibits qualitative agreement with experimental results as a function of salt and DNA/histone concentration.

引用

页码：1022 / 1028

页数：7

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