National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
GM108753
米国
引用
ジャーナル: Sci Adv / 年: 2020 タイトル: The structures of natively assembled clathrin-coated vesicles. 著者: Mohammadreza Paraan / Joshua Mendez / Savanna Sharum / Danielle Kurtin / Huan He / Scott M Stagg / 要旨: Clathrin-coated vesicles mediate trafficking of proteins and nutrients in the cell and between organelles. Proteins included in the clathrin-coated vesicles (CCVs) category include clathrin heavy ...Clathrin-coated vesicles mediate trafficking of proteins and nutrients in the cell and between organelles. Proteins included in the clathrin-coated vesicles (CCVs) category include clathrin heavy chain (CHC), clathrin light chain (CLC), and a variety of adaptor protein complexes. Much is known about the structures of the individual CCV components, but data are lacking about the structures of the fully assembled complexes together with membrane and in complex with cargo. Here, we determined the structures of natively assembled CCVs in a variety of geometries. We show that the adaptor β2 appendages crosslink adjacent CHC β-propellers and that the appendage densities are enriched in CCV hexagonal faces. We resolve how adaptor protein 2 and other associated factors in hexagonal faces form an assembly hub with an extensive web of interactions between neighboring β-propellers and propose a structural model that explains how adaptor binding can direct the formation of pentagonal and hexagonal faces.
#256 - 2021年4月 SARSコロナウイルス2型のスパイクと抗体 (SARS-CoV-2 Spike and Antibodies) 類似性 (1)
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集合体
登録構造単位
A: Clathrin heavy chain 1 B: Clathrin light chain B C: Clathrin heavy chain 1 E: Clathrin light chain B D: Clathrin heavy chain 1 F: Clathrin light chain B O: Clathrin light chain B L: Clathrin heavy chain 1 M: Clathrin heavy chain 1 J: Clathrin light chain B G: Clathrin heavy chain 1 H: Clathrin heavy chain 1 N: Clathrin light chain B I: Clathrin heavy chain 1 K: Clathrin heavy chain 1
選択した粒子像数: 360000 詳細: These are subparticle images that were extracted from particle images. Each minicoat particle has 24 asymmetric vertices. From a total of 15000 minicoat particles, 360000 vertex subparticles ...詳細: These are subparticle images that were extracted from particle images. Each minicoat particle has 24 asymmetric vertices. From a total of 15000 minicoat particles, 360000 vertex subparticles were extracted. The position of subparticles was calculated by the localized reconstruction script in scipion, and the subparticle images were extracted with RELION extraction tools.
対称性
点対称性: C1 (非対称)
3次元再構成
解像度: 6.3 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 305413 詳細: After the final refinement in cisTEM, half-maps were generated in cisTEM and the FSC was calculated with EMAN FSC tools. 対称性のタイプ: POINT