通过无序蛋白质感知膜曲率的分子机制
Wade F Zeno1, Ajay S Thatte1, Liping Wang2
1Department of Biomedical Engineering , The University of Texas at Austin , Austin , Texas 78712 , United States.
Journal of the American Chemical Society
|June 11, 2019
概括
内在无序的蛋白质通过和静电感知膜曲率. 它们的传感机制取决于链条的长度和电荷,
科学领域:
- 生物化学
- 细胞生物学
- 生物物理
背景情况:
- 感知膜曲率的蛋白质对于细胞过程至关重要.
- 已经确立的机制涉及结构蛋白.
- 内在无序蛋白 (IDP) 也感知膜曲率,但机制尚不清楚.
研究的目的:
- 研究内在无序的蛋白质如何感知膜曲率.
- 区分热和静电传感机制.
- 与检测机制相关联的蛋白质特征.
主要方法:
- 膜囊泡的定量成像
- 在曲膜上分析蛋白质的失序行为.
- 不同的蛋白质链长度和净电荷.
主要成果:
- IDPs通过降低硬体阻碍 () 和改变脂质相互作用 (静电) 来感知曲率.
- 长,低电荷的IDP主要使用机制.
- 短,高电荷的IDP主要使用静电机制.
结论:
- 两种不同的机制解释了IDP曲率传感.
- 蛋白质的特性决定了主要的感知策略.
- 为预测膜中的IDP功能提供了一个框架.
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