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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
Electron tomography can be performed either in TEM or STEM (scanning transmission...
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Related Experiment Video

Updated: Jun 3, 2025

Author Spotlight: Exploring Cellular Processes by Modeling Ligands in Cryo-EM Maps
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Advances in cryo-electron microscopy (cryoEM) for structure-based drug discovery.

Pawel Rubach1,2, Karolina A Majorek1, Michal Gucwa1,3,4

  • 1Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, VA, USA.

Expert Opinion on Drug Discovery
|January 10, 2025
PubMed
Summary

Cryo-electron microscopy (cryoEM) is revolutionizing drug discovery by enabling detailed 3D macromolecular structure determination. Advancements in cryoEM, coupled with AI, are crucial for developing new therapies and improving structural quality metrics.

Keywords:
artificial intelligencecryo-electron microscopydrug discoverymachine learningquality metricstructure validation

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Area of Science:

  • Structural biology
  • Drug discovery
  • Biophysics

Background:

  • Macromolecular X-ray crystallography (XRC), nuclear magnetic resonance (NMR), and cryo-electron microscopy (cryoEM) are key techniques for determining 3D macromolecular structures vital for drug discovery.
  • The Protein Data Bank (PDB) is a critical resource for 3D macromolecular structures, with increasing importance due to AI and cryoEM advancements.
  • Developments in cryoEM and AI necessitate improved quality metrics and validation standards for experimental structures.

Purpose of the Study:

  • Review recent advancements in cryoEM for drug discovery.
  • Analyze cryoEM structure quality metrics, resolution, and refinement.
  • Compare cryoEM with XRC and NMR, highlighting cryoEM's expanding role.

Main Methods:

  • Review of recent literature on cryoEM advancements in drug discovery.
  • Analysis of structure quality metrics, resolution, and identification of ligands/water molecules.
  • Comparative assessment of cryoEM against X-ray crystallography (XRC) and nuclear magnetic resonance (NMR).

Main Results:

  • CryoEM is revolutionizing structural biology, especially for large, complex molecular interactions.
  • AI integration with cryoEM enhances particle identification and 3D structure determination.
  • CryoEM facilities are expanding globally, increasing its significance in drug discovery.

Conclusions:

  • CryoEM is becoming a pivotal tool in drug discovery, driving the development of novel therapeutics.
  • Advancements in cryoEM support diverse applications including vaccine design and gene therapy.
  • The synergy between AI and cryoEM is accelerating the pace of structural determination and therapeutic innovation.