缠结丝状肌动蛋白溶液的非线性力学

Nonlinear mechanics of entangled F-actin solutions.

作者信息

Semmrich Christine, Larsen Ryan J, Bausch Andreas R

机构信息

Lehrstuhl für Biophysik E27, Technische Universität München, James-Franck-Straße, 85748, Garching, Germany.

School of Engineering and Applied Sciences, Harvard University, 29 Oxford St., Cambridge, Massachusetts 02138, USA.

出版信息

Soft Matter. 2008 Jul 16;4(8):1675-1680. doi: 10.1039/b800989a.

DOI:10.1039/b800989a

PMID:32907161

Abstract

Using a variety of different rheological approaches, we study the nonlinear shear response of purified entangled F-actin solutions. We show that the choice of the experimental protocol is crucial. Furthermore, a transition between stress hardening and weakening can be induced even in purely entangled solutions. This transition depends on various ambient and network parameters including temperature, buffer salt concentration, filament length and density.

摘要

我们使用多种不同的流变学方法，研究了纯化的缠结F-肌动蛋白溶液的非线性剪切响应。我们表明，实验方案的选择至关重要。此外，即使在纯缠结溶液中也能诱导应力硬化和弱化之间的转变。这种转变取决于各种环境和网络参数，包括温度、缓冲盐浓度、细丝长度和密度。