强烈影响共传折叠的位的物理起源:控制新生的蛋白质折叠的框架
Ajeet K Sharma1, Bernd Bukau2, Edward P O'Brien1
1Department of Chemistry, Pennsylvania State University , University Park, Pennsylvania 16802, United States.
Journal of the American Chemical Society
|December 31, 2015
概括
新生蛋白质折叠是一个由翻译速度影响的不平衡过程. 这项研究介绍了一种设计控制配译折叠的mRNA序列的方法,揭示了影响蛋白质结构的关键位.
科学领域:
- 生物物理
- 分子生物学
- 计算生物学
背景情况:
- 新生蛋白质的行为越来越被视为一个不平衡的现象.
- 翻译延长动力学, 不仅仅是热力学,
- 同义代码的使用可能是由进化形成的,以优化配译折叠.
研究的目的:
- 开发一种计算方法来控制翻译过程中的新生链折叠.
- 合理设计指导共翻译折叠的mRNA序列.
- 研究子位置对蛋白质折叠动态的影响.
主要方法:
- 开发了一种蒙特卡罗主方程方法.
- 使用粗粒度分子动力学模拟.
- 设计并测试了控制折叠的最佳mRNA序列.
主要成果:
- 该框架成功控制了模拟的共翻译蛋白折叠.
- 确定了对折叠有重大影响的特定位.
- 证明一些位置是关键的,因为它们远离平衡和时间尺度的依赖.
结论:
- 同义符号的使用基本上与配译过程的不平衡性有关.
- 进化可能会优化子的使用,以增强功能性蛋白质的生产.
- 合理的mRNA序列设计可以指导所需蛋白质结构的转换折叠.
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