Simulations suggest a scaffolding mechanism of membrane deformation by the caveolin 8S complex
Simulations suggest a scaffolding mechanism of membrane deformation by the caveolin 8S complex
复制标题
模拟表明小窝蛋白 8S 复合体膜变形的支架机制
DOI:
10.1016/j.bpj.2023.09.008
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发表时间:
2023
影响因子:
3.4
通讯作者:
Lazaridis, Themis
中科院分区:
文献类型:
--
作者:
Vasquez Rodriguez, Sayyid Yobhel;Lazaridis, Themis
Caveolins form complexes of various sizes that deform membranes into polyhedral shapes. However, the recent structure of the 8S complex was disk-like with a flat membrane-binding surface. How can a flat complex deform membranes into nonplanar structures? Molecular dynamics simulations revealed that the 8S complex rapidly takes the form of a suction cup. Simulations on implicit membrane vesicles determined that binding is stronger when E140 gets protonated. In that case, the complex binds much more strongly to 5- and 10-nm-radius vesicles. A concave membrane-binding surface readily explains the membrane-deforming ability of caveolins by direct scaffolding. We propose that the 8S complex sits at the vertices of the caveolar polyhedra, rather than at the center of the polyhedral faces.
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影响因子:
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通讯作者:
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通讯作者:
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