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Cryo-electron Microscopy01:28

Cryo-electron Microscopy

4.0K
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...
4.0K
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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Related Experiment Video

Updated: Dec 9, 2025

Cryo-EM and Single-Particle Analysis with Scipion
09:06

Cryo-EM and Single-Particle Analysis with Scipion

Published on: May 29, 2021

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Present and Emerging Methodologies in Cryo-EM Single-Particle Analysis.

Mengyu Wu1, Gabriel C Lander1

  • 1Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California.

Biophysical Journal
|September 13, 2020
PubMed
Summary

Advancements in cryogenic electron microscopy (cryo-EM) single-particle analysis provide high-resolution insights into biological macromolecules. Further improvements in sample preparation, data acquisition, and processing are needed for cryo-EM development.

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Area of Science:

  • Structural biology
  • Biophysics
  • Biochemistry

Background:

  • Cryo-electron microscopy (cryo-EM) single-particle analysis has revolutionized structural biology.
  • High-resolution structural data of biological macromolecules are now routinely achievable.
  • Significant progress has been made, yet challenges persist in the cryo-EM workflow.

Purpose of the Study:

  • To review recent advancements in cryo-EM single-particle analysis.
  • To identify current challenges and bottlenecks in the cryo-EM workflow.
  • To highlight areas requiring further methodological and hardware development.

Main Methods:

  • Review of recent technical and methodological improvements in cryo-EM.
  • Analysis of key stages in the cryo-EM single-particle analysis workflow.
  • Identification of limitations and future directions.

Main Results:

  • Cryo-EM has enabled routine high-resolution structural analyses.
  • New molecular insights have been gained into complex biological questions.
  • Opportunities for improvement exist in sample preparation, image acquisition, processing, and validation.

Conclusions:

  • Cryo-EM is a powerful tool for molecular structural determination.
  • Continued innovation in methodology and hardware is crucial for advancing the field.
  • Addressing current bottlenecks will enhance the utility and accessibility of cryo-EM.