ジャーナル: J Struct Biol / 年: 2017 タイトル: Cellular electron cryo tomography and in situ sub-volume averaging reveal the context of microtubule-based processes. 著者: Michael Grange / Daven Vasishtan / Kay Grünewald / 要旨: Electron cryo-tomography (cryoET) is currently the only technique that allows the direct observation of proteins in their native cellular environment. Sub-volume averaging of electron tomograms ...Electron cryo-tomography (cryoET) is currently the only technique that allows the direct observation of proteins in their native cellular environment. Sub-volume averaging of electron tomograms offers a route to increase the signal-to-noise of repetitive biological structures, such improving the information content and interpretability of tomograms. We discuss the potential for sub-volume averaging in highlighting and investigating specific processes in situ, focusing on microtubule structure and viral infection. We show that (i) in situ sub-volume averaging from single tomograms can guide and complement segmentation of biological features, (ii) the in situ determination of the structure of individual viruses is possible as they infect a cell, and (iii) novel, transient processes can be imaged with high levels of detail.
凍結剤: ETHANE-PROPANE / チャンバー内湿度: 60 % / チャンバー内温度: 298 K / 装置: HOMEMADE PLUNGER 詳細: Adherent cells from on electron microscopy grid, manually blotted for 3s and plunge frozen.
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電子顕微鏡法
顕微鏡
FEI POLARA 300
温度
最低: 77.0 K / 最高: 110.0 K
特殊光学系
エネルギーフィルター - 名称: GIF Quantum エネルギーフィルター - エネルギー下限: 0 eV エネルギーフィルター - エネルギー上限: 20 eV