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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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Preparation of Samples for Electron Microscopy01:20

Preparation of Samples for Electron Microscopy

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To be visualized by an electron microscope, either transmission or scanning, biological samples need to be fixed (stabilized) so the electron beam does not destroy them and dried thoroughly (desiccated/dehydrated) so the vacuum does not affect them. Fixation needs to be done as quickly as possible because the sample properties will start changing as soon as it is removed from its natural environment. For example, in a tissue sample, the oxygen levels begin decreasing, causing an altered...
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相关实验视频

Updated: Jun 6, 2025

Single Particle Cryo-Electron Microscopy: From Sample to Structure
11:52

Single Particle Cryo-Electron Microscopy: From Sample to Structure

Published on: May 29, 2021

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实施冷电子显微镜结构确定在皮肤病学研究中的实用指南.

Ivan B Lomakin1, Swapnil C Devarkar2, Christian Freniere2

  • 1Department of Dermatology, Yale University School of Medicine, New Haven, Connecticut, USA.

The Journal of investigative dermatology
|November 27, 2024
PubMed
概括

低温电子显微镜 (cryo-EM) 确定生物分子的高分辨率结构. 这篇评论强调了冷-EM的重点.

关键词:
化电磁波是一种冷电磁波.发展发展发展 发展发展药物 药物 药物 药物 药物方法/工具/技术 方法/工具/技术显微镜的使用方法结构 结构 是一个结构.

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Strategies for Optimization of Cryogenic Electron Tomography Data Acquisition
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Manual Blot-and-Plunge Freezing of Biological Specimens for Single-Particle Cryogenic Electron Microscopy
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相关实验视频

Last Updated: Jun 6, 2025

Single Particle Cryo-Electron Microscopy: From Sample to Structure
11:52

Single Particle Cryo-Electron Microscopy: From Sample to Structure

Published on: May 29, 2021

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Strategies for Optimization of Cryogenic Electron Tomography Data Acquisition
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Strategies for Optimization of Cryogenic Electron Tomography Data Acquisition

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Manual Blot-and-Plunge Freezing of Biological Specimens for Single-Particle Cryogenic Electron Microscopy
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科学领域:

  • 结构生物学 结构生物学
  • 生物化学 生物化学
  • 卫生研究 卫生研究 卫生研究

背景情况:

  • 低温电子显微镜 (cryo-EM) 和断层扫描使原子分辨率能够在溶液中确定生物宏分子的结构.
  • 最近的进步,被称为"分辨率革命",已经大大扩大了冷EM在与健康相关的研究中的应用.
  • 国家冷电磁数据收集中心进一步扩大了可访问性和实用性.

研究的目的:

  • 审查单粒子冷EM的基本原理.
  • 在皮肤学相关的宏分子研究中展示冷EM应用.
  • 在药物开发中提供冷EM整合的例子.

主要方法:

  • 单粒子冷电子显微镜 (cryo-EM) 技术.
  • 冷电子断层扫描.
  • 数据分析和结构确定.

主要成果:

  • 化电磁波为宏分子结构提供原子或近原子分辨率的洞察力.
  • 在研究皮肤学相关的大分子和复合物的过程中,冷EM的实用性已被证明.
  • 在药物发现和开发管道中展示了潜在的应用.

结论:

  • 低温电磁波是一种强大的工具,可以在高分辨率下了解生物结构.
  • 它在皮肤病学研究中的应用为了解疾病机制提供了新的途径.
  • 化EM在药物开发过程中有很大的帮助.