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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

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: Nov 26, 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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SIMPLE 3.0. Stream single-particle cryo-EM analysis in real time.

Joseph Caesar1,2, Cyril F Reboul3,4, Chiara Machello3,4

  • 1Sir William Dunn School of Pathology, University of Oxford, Oxford, UK.

Journal of Structural Biology: X
|December 9, 2020
PubMed
Summary

The SIMPLE 3.0 software offers real-time single-particle analysis for cryo-EM data, streamlining processing with minimal resources. This open-source tool facilitates efficient, cost-effective high-resolution 3D reconstruction from direct electron detector movies.

Keywords:
Cryo-EMReal-timeSingle-particleStream image processing

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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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Related Experiment Videos

Last Updated: Nov 26, 2025

Single Particle Cryo-Electron Microscopy: From Sample to Structure
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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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Area of Science:

  • Structural Biology
  • Biophysics
  • Computational Biology

Background:

  • Cryogenic transmission electron microscopy (cryo-EM) is crucial for determining high-resolution structures of biological macromolecules.
  • Efficient processing of large cryo-EM datasets is essential for advancing structural biology.
  • Existing software often requires significant computational resources and expertise, limiting accessibility.

Purpose of the Study:

  • To introduce SIMPLE 3.0, an open-source software package for single-particle analysis (SPA) in cryo-EM.
  • To enable real-time data processing with minimal CPU resources for cost-efficient scaling.
  • To provide an intuitive graphical user interface (GUI) for simplified workflow management and accessibility.

Main Methods:

  • Development of a stream SPA tool incorporating anisotropic motion correction and CTF estimation.
  • Implementation of rapid template-based particle identification and 2D clustering with automatic class rejection.
  • Creation of a web-based GUI supporting multi-user environments and automatic workflow recording.

Main Results:

  • SIMPLE 3.0 processes cryo-EM movies in real-time, requiring minimal standard CPU resources.
  • The software can keep pace with data acquisition rates of approximately 300 Gatan K3 direct electron detector movies per hour.
  • Automated processing enables obtaining clean single-particle datasets ready for 3D reconstruction immediately after data collection.

Conclusions:

  • SIMPLE 3.0 significantly simplifies and accelerates the cryo-EM data processing workflow.
  • The software's efficiency and accessibility lower the barrier for high-resolution 3D structure determination.
  • This release enhances the utility of cryo-EM for a broader range of researchers.