Membrane curvature and its generation by BAR proteins.

Membrane curvature and its generation by BAR proteins.
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DOI:
10.1016/j.tibs.2012.09.001
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发表时间:
2012-12
影响因子:
13.8
通讯作者:
Unger, Vinzenz M.
Unger, Vinzenz M.
中科院分区:
生物学1区
文献类型:
--
作者:
Mim, Carsten;Unger, Vinzenz M.

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膜是围绕细胞及其隔室的柔性屏障。为了执行运动或受体转换等重要功能,细胞需要控制其膜的形状。在某种程度上,这种控制是通过膜弯曲蛋白,如bin/amphiphysin/rvs结构域(BAR)蛋白实现的。许多悬而未决的问题仍然是关于膜弯曲蛋白的功能机制。为了解决这一不足,BAR蛋白:膜复合物的最新结构支持现有的机制模型,但也产生了新的见解如何BAR结构域蛋白的感觉,稳定和产生曲率。在这里,我们回顾了这些最近的研究结果,重点是BAR蛋白如何与膜相互作用,以及由此产生的支架结构如何有助于招募其他蛋白质到膜弯曲的部位。
Membranes are flexible barriers that surround the cell and its compartments. To execute vital functions such as locomotion or receptor turnover, cells need to control the shapes of their membranes. In part, this control is achieved through membrane-bending proteins, such as the bin/amphiphysin/rvs domain (BAR) proteins. Many open questions remain about the mechanisms by which membrane-bending proteins function. Addressing this shortfall, recent structures of BAR protein:membrane complexes support existing mechanistic models, but also produced novel insights into how BAR-domain proteins sense, stabilize and generate curvature. Here we review these recent findings, focusing on how BAR proteins interact with the membrane, and how the resulting scaffold structures might aid the recruitment of other proteins to the sites where membranes are bent.
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