Zheng Wenjun, Brooks Bernard R, Thirumalai D
Physics Department, University at Buffalo, Buffalo, NY 14260, USA.
Curr Protein Pept Sci. 2009 Apr;10(2):128-32. doi: 10.2174/138920309787847608.
Allostery forms the basis of intra-molecular communications in various enzymes, however the underlying conformational changes are largely elusive. Recently, we have proposed to employ an elastic model based normal mode analysis to investigate the allosteric transitions in several molecular nanomachines (including myosin II, DNA polymerase and chaperonin GroEL). After combining with bioinformatics analysis of the evolutionary sequence variations, we have been able to identify the highly conserved and robust modes of collective motions that are capable of transmitting molecular signals over long distances.
变构作用构成了各种酶分子内通讯的基础,然而其潜在的构象变化在很大程度上仍不清楚。最近,我们提出采用基于弹性模型的简正模式分析来研究几种分子纳米机器(包括肌球蛋白II、DNA聚合酶和伴侣蛋白GroEL)中的变构转变。在结合进化序列变异的生物信息学分析后,我们能够识别出能够长距离传递分子信号的高度保守且稳健的集体运动模式。