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相关概念视频

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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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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Molecular Models02:00

Molecular Models

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Physical models representing molecular architectures of chemical compounds play essential roles in understanding chemistry. The use of molecular models makes it easier to visualize the structures and shapes of atoms and molecules.
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相关实验视频

Updated: Jan 18, 2026

Author Spotlight: Exploring Cellular Processes by Modeling Ligands in Cryo-EM Maps
09:30

Author Spotlight: Exploring Cellular Processes by Modeling Ligands in Cryo-EM Maps

Published on: July 19, 2024

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从冷电子显微镜数据与基于物理的方法获得更好的结构模型.

Hande Boyaci Selcuk1, Gabriella Reggiano1, Jacob Robson-Tull1

  • 1Schrödinger Inc, New York, NY, USA.

FEBS letters
|September 12, 2025
PubMed
概括
此摘要是机器生成的。

混合方法将传统工具与基于物理的方法相结合,提高了来自冷电子显微镜的原子分辨率结构的质量. 这些技术对于中低分辨率数据和小分子非常有价值.

关键词:
化-EMEM可以使用.密度适应器适合的密度适应器发现药物的发现.实力场 实力场 实力场 实力场基于物理的提炼.蛋白质 - 配合物复合物.现实空间精细化精细化小分子对接的对接点结构验证 结构验证

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Cryo-EM and Single-Particle Analysis with Scipion
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Cryo-EM and Single-Particle Analysis with Scipion

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A Robust Single-Particle Cryo-Electron Microscopy cryo-EM Processing Workflow with cryoSPARC, RELION, and Scipion
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A Robust Single-Particle Cryo-Electron Microscopy cryo-EM Processing Workflow with cryoSPARC, RELION, and Scipion

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相关实验视频

Last Updated: Jan 18, 2026

Author Spotlight: Exploring Cellular Processes by Modeling Ligands in Cryo-EM Maps
09:30

Author Spotlight: Exploring Cellular Processes by Modeling Ligands in Cryo-EM Maps

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Cryo-EM and Single-Particle Analysis with Scipion
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Cryo-EM and Single-Particle Analysis with Scipion

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A Robust Single-Particle Cryo-Electron Microscopy cryo-EM Processing Workflow with cryoSPARC, RELION, and Scipion
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科学领域:

  • 结构生物学是结构生物学.
  • 生物物理学的生物物理.

背景情况:

  • 低温电子显微镜 (cryo-EM) 经常实现生物系统的原子分辨率.
  • 冷电磁结构的实用性取决于密度图中内置的原子模型的质量.
  • 模型质量对于解释实验数据和理解生物机制至关重要.

研究的目的:

  • 调查混合方法,将传统和基于物理的方法结合起来,用于冷EM模型构建.
  • 突出这些混合方法对各种冷电磁数据集和分子类型的好处.
  • 倡导将混合方法集成到标准的冷EM工作流程中.

主要方法:

  • 审查有关混合模型构建技术的现有文献.
  • 讨论基于物理学的方法,包括对接,模拟和现代力场.
  • 分析这些方法对不同分辨率范围和分子大小的应用.

主要成果:

  • 混合方法明显提高了嵌入到冷电磁密度图中的原子模型的质量.
  • 这些方法对于中低分辨率的冷电磁数据集特别有效.
  • 混合方法在更大的生物组件中提炼小分子结构的实用性.

结论:

  • 将基于物理的方法与传统工具相结合,可以提高冷电磁结构的质量.
  • 混合方法为具有挑战性的数据集和小分子结构提供了显著的优势.
  • 这些混合工作流的广泛采用将使结构生物学界受益.