- EMDB-11316: Map of the shoulder domain from dynactin to resolve the upper pad... -
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データベース: EMDB / ID: EMD-11316
タイトル
Map of the shoulder domain from dynactin to resolve the upper paddle and hook regions
マップデータ
Map fit using chimera to D_1292109773 , based on regions consisting of upper paddle and hook domains and lower arm (see additional map). Map is filtered to 6 Angstroms
ジャーナル: EMBO J / 年: 2021 タイトル: Cryo-EM reveals the complex architecture of dynactin's shoulder region and pointed end. 著者: Clinton K Lau / Francis J O'Reilly / Balaji Santhanam / Samuel E Lacey / Juri Rappsilber / Andrew P Carter / 要旨: Dynactin is a 1.1 MDa complex that activates the molecular motor dynein for ultra-processive transport along microtubules. In order to do this, it forms a tripartite complex with dynein and a coiled- ...Dynactin is a 1.1 MDa complex that activates the molecular motor dynein for ultra-processive transport along microtubules. In order to do this, it forms a tripartite complex with dynein and a coiled-coil adaptor. Dynactin consists of an actin-related filament whose length is defined by its flexible shoulder domain. Despite previous cryo-EM structures, the molecular architecture of the shoulder and pointed end of the filament is still poorly understood due to the lack of high-resolution information in these regions. Here we combine multiple cryo-EM datasets and define precise masking strategies for particle signal subtraction and 3D classification. This overcomes domain flexibility and results in high-resolution maps into which we can build the shoulder and pointed end. The unique architecture of the shoulder securely houses the p150 subunit and positions the four identical p50 subunits in different conformations to bind dynactin's filament. The pointed end map allows us to build the first structure of p62 and reveals the molecular basis for cargo adaptor binding to different sites at the pointed end.
ダウンロード / ファイル: emd_11316.map.gz / 形式: CCP4 / 大きさ: 307.5 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
注釈
Map fit using chimera to D_1292109773 , based on regions consisting of upper paddle and hook domains and lower arm (see additional map). Map is filtered to 6 Angstroms