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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
Electron tomography can be performed either in TEM or STEM (scanning transmission...
Cryo-electron Microscopy01:28

Cryo-electron Microscopy

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 17, 2026

Visualization of Organelles In Situ by Cryo-STEM Tomography
08:37

Visualization of Organelles In Situ by Cryo-STEM Tomography

Published on: June 23, 2023

Visualizing cellular processes at the molecular level by cryo-electron tomography.

Kfir Ben-Harush, Tal Maimon, Israel Patla

    Journal of Cell Science
    |December 18, 2009
    PubMed
    Summary
    This summary is machine-generated.

    Electron tomography of vitrified cells (cryo-ET) provides high-resolution 3D cell structure analysis. This method captures cellular processes like cytoskeletal dynamics and viral entry in their native states.

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    Area of Science:

    • Cellular biology
    • Structural biology
    • Microscopy

    Background:

    • Cellular structures change rapidly during biological processes.
    • Preserving cellular structure during dynamic events is challenging.
    • Electron tomography of vitrified cells (cryo-ET) offers high-resolution 3D reconstruction.

    Purpose of the Study:

    • To highlight the utility of cryo-ET for studying eukaryotic cellular architecture.
    • To focus on cryo-ET applications in cytoskeletal dynamics, cell movement, and viral entry.
    • To showcase the potential of cryo-ET for in situ structural determination of macromolecular complexes.

    Main Methods:

    • Cryo-electron tomography (cryo-ET) of vitrified cells.
    • 3D reconstruction of cellular architecture at 4-6 nm resolution.
    • In situ structural analysis of macromolecular complexes and organelles.

    Main Results:

    • Cryo-ET enables the study of macromolecular complexes and organelles in their native cellular environment.
    • The method allows for instantaneous arrest of functional states, preserving delicate cellular structures.
    • Demonstrated potential for determining structures of complexes like the nuclear pore complex.

    Conclusions:

    • Cryo-ET is a powerful tool for understanding cellular architecture and dynamics.
    • The technique is particularly valuable for studying rapid, cytoskeletal-driven cellular processes.
    • Cryo-ET facilitates in situ structural biology of cellular components.