在ER表面的过渡会触发FIP200的液-液相分离,以确定自细胞启动部位
Qiaoxia Zheng1, Yong Chen1, Di Chen1
1National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.
Cell
|October 5, 2022
概括
在多细胞生物体中,自的启动依赖于 (Ca2+) 过渡物. 这些由EPG-4/EI24调节的过渡物会在ER膜上触发FIP200复合体的形成,从而启动自细胞生物发生.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 自学研究 自学研究
背景情况:
- 在多细胞生物体内内质内网 (ER) 上启动自细胞形成的确切机制尚不清楚.
- 自是一种基本的细胞过程,用于降解损坏的组件和回收材料.
研究的目的:
- 阐明 (Ca2+) 过渡体在启动ER上的自细胞形成中的作用.
- 确定参与自过程中调节Ca2+信号传递的关键蛋白质.
主要方法:
- 使用多模超分辨率显微镜 (SIM) 来分析FIP200复杂动态.
- 研究了在细胞中操纵Ca2+过渡物和EPG-4/EI24水平的影响.
- 研究了涉及VAPA/B和ATL2/3.3的蛋白质与蛋白质相互作用.
主要成果:
- 自刺激会在ER膜上诱导Ca2+过渡物,由EPG-4/EI24控制.
- 耗尽EI24导致持续的Ca2+过渡物,导致ER上FIP200复合物的积累.
- Ca2+过渡物促进FIP200的液态相分离,形成动态点,聚集成自细胞启动部位.
结论:
- Ca2+ 过渡体对于触发 FIP200 阶段分离和在甲基动物中确定 ER 上的自细胞启动部位至关重要.
- EPG-4/EI24作为这些Ca2+信号的关键调节器.
- Lysosomal Ca2+ 过渡体也对 FIP200 的 ER 招募有所贡献.
关键词:
在ATG9中,它是ATG9.2+) 暂时的过渡性EI24 在线观看在这里,你会看到一个很棒的景点.在FIP200中,我们可以使用FIP200.自胞体形成自胞体的形成液态-液态相隔离方法 液态相隔离方法lysosome lysosome 是一种溶解体的组成部分.更多相关视频
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