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Related Concept Videos

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

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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
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Related Experiment Video

Updated: Mar 8, 2026

Routine Collection of High-Resolution cryo-EM Datasets Using 200 KV Transmission Electron Microscope
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Routine Collection of High-Resolution cryo-EM Datasets Using 200 KV Transmission Electron Microscope

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Introduction to high-resolution cryo-electron microscopy.

Mariusz Czarnocki-Cieciura1, Marcin Nowotny1

  • 1Laboratorium Struktury Białka, Międzynarodowy Instytut Biologii Molekularnej i Komórkowej w Warszawie, ul. Ks. Trojdena 4, 02-109 Warszawa, Polska.

Postepy Biochemii
|January 30, 2017
PubMed
Summary
This summary is machine-generated.

The resolution revolution in cryo-electron microscopy (cryo-EM) now enables near-atomic resolution 3D maps for macromolecules. This breakthrough makes cryo-EM the preferred method for complex biological assemblies.

Keywords:
cryo-EMelectron microscopynegative stainsingle particle reconstructionstructural biology

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Strategies for Optimization of Cryogenic Electron Tomography Data Acquisition

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Area of Science:

  • Structural Biology
  • Biophysics
  • Biochemistry

Background:

  • X-ray crystallography and NMR spectroscopy have historically dominated structural biology.
  • Traditional cryo-electron microscopy (cryo-EM) offered limited resolution (6-10 Å) for macromolecular reconstructions.
  • Advancements in transmission electron microscopy and software have driven significant improvements.

Purpose of the Study:

  • To highlight the impact of recent technological advancements on cryo-EM.
  • To establish cryo-EM as a leading technique in structural biology.

Main Methods:

  • Development of advanced transmission electron microscopes.
  • Implementation of direct electron detectors.
  • Continuous software improvements for data processing and image analysis.

Main Results:

  • The "resolution revolution" in cryo-EM has been achieved.
  • Routine near-atomic-resolution (better than 6 Å) 3D maps are now attainable.
  • Cryo-EM can analyze intact biological macromolecules as small as approximately 100 kDa.

Conclusions:

  • Cryo-EM is now a powerful and accessible method for structural biology.
  • It is becoming the method of choice for complex biological assemblies.
  • This technique facilitates structural determination for molecules previously unsuitable for other methods.