Interplay of proteins and lipids in generating membrane curvature.

Interplay of proteins and lipids in generating membrane curvature.
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DOI:
10.1016/j.ceb.2010.05.002
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发表时间:
2010-08
影响因子:
7.5
通讯作者:
Kozlov MM
Kozlov MM
中科院分区:
生物学2区
文献类型:
--
作者:
Graham TR;Kozlov MM

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大多数细胞内膜具有强烈弯曲的形状,曲率半径范围为20 - 50 nm。许多不同的蛋白质提供了产生和维持这种曲率所需的大量能量。曲率产生的最有效机制之一是基于膜单层的不对称性。蛋白质通过将磷脂翻转穿过膜、修饰脂质分子或将其疏水结构域嵌入膜基质来产生这种不对称性。我们回顾了这些膜弯曲机制的物理原理,并强调了驱动囊泡介导的运输的特定蛋白质的作用。网格蛋白介导的小泡出芽从trans-Golgi网络的模型描述,以说明产生膜曲率的不同机制的相互作用和相互加强。
The majority of intracellular membranes have strongly bent shapes with radii of curvature ranging from 20 – 50 nm. Many different proteins provide the substantial energy needed to generate and sustain this curvature. One of the most effective mechanisms of curvature creation is based on asymmetry of membrane monolayers. Proteins generate this asymmetry by flipping phospholipid across the membrane, modifying lipid molecules or embedding their hydrophobic domains into the membrane matrix. We review the physical principles of these mechanisms of membrane bending and highlight the action of specific proteins driving vesicle-mediated transport. A model of clathrin-mediated vesicle budding from the trans-Golgi network is described to illustrate the interplay and mutual reinforcement of different mechanisms for generating membrane curvature.
Drs2p的作用,P型ATPase和潜在的氨基磷脂易位酶,在高尔基酵母晚期功能中。
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