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Related Concept Videos

Electron Microscope Tomography and Single-particle Reconstruction01:07

Electron Microscope Tomography and Single-particle Reconstruction

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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Cryo-electron Microscopy01:28

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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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Related Experiment Video

Updated: Jun 8, 2026

Cryo-Electron Tomography Remote Data Collection and Subtomogram Averaging
08:55

Cryo-Electron Tomography Remote Data Collection and Subtomogram Averaging

Published on: July 12, 2022

Alignment of cryo-electron tomography datasets.

Fernando Amat1, Daniel Castaño-Diez, Albert Lawrence

  • 1Department of Electrical Engineering, Stanford University, Stanford, California, USA.

Methods in Enzymology
|October 5, 2010
PubMed
Summary
This summary is machine-generated.

This chapter reviews automated software for cryo-electron tomography (CET) alignment and reconstruction. It focuses on using gold fiducial markers or biological structures to achieve high-resolution 3D models.

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Using Tomoauto: A Protocol for High-throughput Automated Cryo-electron Tomography
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Using Tomoauto: A Protocol for High-throughput Automated Cryo-electron Tomography

Published on: January 30, 2016

Related Experiment Videos

Last Updated: Jun 8, 2026

Cryo-Electron Tomography Remote Data Collection and Subtomogram Averaging
08:55

Cryo-Electron Tomography Remote Data Collection and Subtomogram Averaging

Published on: July 12, 2022

Using Tomoauto: A Protocol for High-throughput Automated Cryo-electron Tomography
11:33

Using Tomoauto: A Protocol for High-throughput Automated Cryo-electron Tomography

Published on: January 30, 2016

Area of Science:

  • Structural Biology
  • Microscopy Techniques
  • Computational Biology

Background:

  • Cryo-electron tomography (CET) data acquisition involves mechanical imprecisions leading to distortions in tilt series projections.
  • Accurate 3D reconstruction of biological samples from CET data requires precise alignment of 2D projection images.
  • Alignment corrects for shifts, rotations, and other distortions by estimating a projection model.

Purpose of the Study:

  • To review automated software packages for cryo-electron tomography (CET) alignment and reconstruction.
  • To compare marker-based and marker-free alignment strategies.
  • To guide users in selecting optimal approaches for high-resolution reconstructions.

Main Methods:

  • Review of automated software for CET alignment and reconstruction.
  • Comparison of methods utilizing gold fiducial markers versus marker-free approaches based on biological structures.
  • Emphasis on critical decision points for achieving high resolution.

Main Results:

  • Several automated software packages are available for CET alignment and reconstruction.
  • Both marker-based and marker-free methods can achieve accurate reconstructions.
  • User focus on key decision points is crucial for optimal outcomes.

Conclusions:

  • Automated alignment and reconstruction software significantly aids in processing CET data.
  • The choice between marker-based and marker-free strategies depends on sample characteristics and experimental goals.
  • Careful consideration of alignment parameters is essential for obtaining high-resolution cryo-electron tomography reconstructions.