Association equilibria for proteins interacted with crowders of short-range attraction in crowded environment

Association equilibria for proteins interacted with crowders of short-range attraction in crowded environment
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拥挤环境中蛋白质与短程吸引力拥挤者相互作用的关联平衡

DOI:
10.1142/s0217979217500072
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发表时间:
2017-01
影响因子:
1.7
通讯作者:
Song Fan
Song Fan
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Wei Jiachen;Song Fan

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基于一个非常简单的粗粒胶体模型,本文采用一种有效的硬球理论和数值模拟方法来研究拥挤环境中球状蛋白质缔合平衡的一般特征.我们测量活度系数,即,与蛋白质溶液的理想行为的偏差和拥挤因子,即,在大分子拥挤的蛋白质中,拥挤对缔合平衡的贡献。结果表明,大分子拥挤中的缔合平衡敏感地依赖于蛋白质-拥挤剂吸引力的大小和反应物与拥挤剂的相对大小。由于我们的粗粒度模型是无关的微观细节的分子,它可以被应用到许多球状蛋白质,如牛血清白蛋白,晶体蛋白和溶菌酶的缔合平衡的控制。
Based on a very simple coarse-grained colloidal model, here we implement an effective hard-sphere theory and numerical simulation to capture the general features of the association equilibria for globular proteins in crowded environment. We measure the activity coefficient, i.e., the deviation from ideal behavior of protein solution, and the crowding factor, i.e., the contribution of crowders to the association equilibria, for proteins in macromolecular crowding. The results show that the association balance in macromolecular crowding depends sensitively on the magnitude of protein–crowder attraction and the relative size of reactant to crowding agent. Since our coarse-grained model is irrelevant to the microscopic details of the molecules, it can be applied to the control of the association equilibria of many globular proteins such as bovine serum albumin, crystallin and lysozyme.
DOI: 10.1021/jp508046y
发表时间: 2014-10
期刊: The journal of physical chemistry. B
影响因子: --
作者:
Young C. Kim;Apratim Bhattacharya;J. Mittal
通讯作者: Young C. Kim;Apratim Bhattacharya;J. Mittal
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影响因子: 4.4
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