National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
NIH R01 GM45377
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
NIH P41 GM109824
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
NIH R01 GM112108
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
NIH GM117212
米国
引用
ジャーナル: Mol Cell / 年: 2023 タイトル: Implications of a multiscale structure of the yeast nuclear pore complex. 著者: Christopher W Akey / Ignacia Echeverria / Christna Ouch / Ilona Nudelman / Yi Shi / Junjie Wang / Brian T Chait / Andrej Sali / Javier Fernandez-Martinez / Michael P Rout / 要旨: Nuclear pore complexes (NPCs) direct the nucleocytoplasmic transport of macromolecules. Here, we provide a composite multiscale structure of the yeast NPC, based on improved 3D density maps from ...Nuclear pore complexes (NPCs) direct the nucleocytoplasmic transport of macromolecules. Here, we provide a composite multiscale structure of the yeast NPC, based on improved 3D density maps from cryogenic electron microscopy and AlphaFold2 models. Key features of the inner and outer rings were integrated into a comprehensive model. We resolved flexible connectors that tie together the core scaffold, along with equatorial transmembrane complexes and a lumenal ring that anchor this channel within the pore membrane. The organization of the nuclear double outer ring reveals an architecture that may be shared with ancestral NPCs. Additional connections between the core scaffold and the central transporter suggest that under certain conditions, a degree of local organization is present at the periphery of the transport machinery. These connectors may couple conformational changes in the scaffold to the central transporter to modulate transport. Collectively, this analysis provides insights into assembly, transport, and NPC evolution.
モデルのタイプ: OTHER 詳細: C8 symmetrized NPC map segmented in CHIMERA with Segger to provide initial 3D map of the double outer ring, which was low pass filtered for the first reference.
最終 再構成
想定した対称性 - 点群: C8 (8回回転対称) / アルゴリズム: FOURIER SPACE / 解像度のタイプ: BY AUTHOR / 解像度: 28.0 Å / 解像度の算出法: FSC 0.143 CUT-OFF / ソフトウェア - 名称: RELION (ver. 3.0.7) 詳細: Subset of full NPC particles, with better defined double outer ring and central transporter 使用した粒子像数: 5140
初期 角度割当
タイプ: MAXIMUM LIKELIHOOD / ソフトウェア - 名称: RELION (ver. 3.0.7) / 詳細: C8 symmetry used
最終 角度割当
タイプ: MAXIMUM LIKELIHOOD / ソフトウェア - 名称: RELION (ver. 3.0.7) 詳細: C8 symmetry used to refine entire double outer ring with appropriate mask
最終 3次元分類
ソフトウェア - 名称: RELION (ver. 3.0.7)
FSC曲線 (解像度の算出)
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原子モデル構築 1
初期モデル
Chain - Source name: Other / Chain - Initial model type: experimental model / 詳細: none
詳細
Rigid body docking of 3D map of central transporter/plug with Chimera
精密化
空間: REAL / プロトコル: RIGID BODY FIT / 当てはまり具合の基準: cross correlation