一个平面BAR蛋白在克拉涂层的底部促进了actin的聚合
Leonardo Almeida-Souza1, Rene A W Frank1, Javier García-Nafría1
1MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, UK.
Cell
|June 12, 2018
概括
FCHSD2蛋白对哺乳动物中介的内细胞分裂 (CME) 是至关重要的. 它通过在等离子膜上组织actin细胞骨架来激活actin聚合,促进囊泡形成和连接物吸收.
科学领域:
- 细胞生物学
- 分子和细胞生物学
- 生物化学
背景情况:
- 克拉特林介导的内细胞分裂 (CME) 对于细胞过程至关重要.
- 动蛋白细胞骨组织对于哺乳动物的CME至关重要,但尚未完全理解.
研究的目的:
- 研究FCHSD2在哺乳动物CME中的作用.
- 在内细胞化过程中阐明FCHSD2的分子机制.
主要方法:
- 研究FCHSD2的删除,以评估其功能.
- 蛋白相互作用的分析和内细胞坑的招募.
- 研究由FCHSD2激活actin的机制.
主要成果:
- 删除FCHSD2会损害连接体的吸收并减缓的成熟.
- 通过SH3-SH3与交叉蛋白的相互作用,FCHSD2被招募到内细胞坑中.
- FCHSD2的F-BAR域结合了血,通过N-WASP招募激活了活性聚合物.
结论:
- 在哺乳动物中,FCHSD2是激素聚合的关键激活剂.
- FCHSD2将血连接到actin细胞骨架,推动细胞内囊泡的成熟.
- 这项研究揭示了一种新型的细胞内核调节的机制.
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