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相关概念视频

Electron Microscope Tomography and Single-particle Reconstruction01:07

Electron Microscope Tomography and Single-particle Reconstruction

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Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
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Cryo-electron Microscopy01:28

Cryo-electron Microscopy

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Conventional electron microscopy (EM) involves dehydration, fixation, and staining of biological samples, which distorts the native state of biological molecules and results in several artifacts. Also, the high-energy electron beam damages the sample and makes it difficult to obtain high-resolution images. These issues can be addressed using cryo-EM, which uses frozen samples and gentler electron beams. The technique was developed by Jacques Dubochet, Joachim Frank, and Richard Henderson, for...
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Subspace Method of Moments for <i>Ab Initio</i> 3-D Single Particle Cryo-EM Reconstruction.

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Bayesian perspective for orientation determination in cryo-EM with application to structural heterogeneity analysis.

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相关实验视频

Updated: Jul 10, 2025

Cryo-Electron Tomography Remote Data Collection and Subtomogram Averaging
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自 Fourier 相关性:对冷-ET 的特性和应用.

Eric J Verbeke1, Marc Aurèle Gilles1, Tamir Bendory2

  • 1Program in Applied and Computational Mathematics, Princeton University, Princeton, NJ, USA.

bioRxiv : the preprint server for biology
|November 21, 2023
PubMed
概括

这项研究引入了一种新方法,可以从单个测量中估计里叶相关性 (FSC),克服显微镜的局限性. 这种方法可以对3D结构和冷断层扫描进行分辨率估计和无色化.

科学领域:

  • 显微镜的使用方法
  • 结构生物学 结构生物学
  • 图像分析 图像分析

背景情况:

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Using Tomoauto: A Protocol for High-throughput Automated Cryo-electron Tomography

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  • 里叶相关性 (FSC) 对于评估分辨率和验证通过显微镜获得的结构生物学数据至关重要.
  • 目前的FSC计算通常需要两个独立的测量,这限制了其在某些场景中的应用.

结论:

  • 这项工作为从单个测量中计算FSC提供了指导方针,扩大了其在显微镜中的实用性.
  • 这些发现表明FSC在结构生物学和图像处理领域的新应用.