疏水性分子在原三螺旋上提供快速折叠和超稳定性
Jasmine Egli1, Christiane Siebler1, Martin Köhler1
1Laboratory of Organic Chemistry , ETH Zurich , D-CHAB, Vladimir-Prelog-Weg 3 , Zurich 8093 , Switzerland.
Journal of the American Chemical Society
|March 29, 2019
概括
添加疏水基于原蛋白加快折叠,使蛋白质更稳定. 这项研究揭示了当地环境如何影响原
科学领域:
- 生物化学
- 蛋白质折叠
- 结构生物学
背景情况:
- 原蛋白的稳定性和折叠率取决于胺键和Xaa-Pro键的 cis-trans异构.
- 了解影响原蛋白结构动态的因素对于其生物功能至关重要.
研究的目的:
- 研究悬挂式疏水分子对原三环折叠和稳定性的影响.
- 阐明局部疏水环境在原体异构化动学的作用.
主要方法:
- 使用一系列原模型的动力学研究.
- 用于评估螺旋体稳定性的热变性研究.
主要成果:
- 一个局部的疏水环境显著加快了 cis-trans 异构.
- 由于加速的异构化,原三环的展开和折叠发生在相似的速度.
- 疏水的附属物产生了超稳定的原三螺旋体,其化温度 (Tm) 为70°C.
结论:
- 悬挂式疏水分子增强了原三环的折叠性和稳定性.
- 当地的疏水环境可以极大地影响蛋白质折叠的动态和热稳定性.
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