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Cryo-Electron Tomography Remote Data Collection and Subtomogram Averaging
Published on: July 12, 2022
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Protocols for Subtomogram Averaging of Membrane Proteins in the Dynamo Software Package
Paula P Navarro1, Henning Stahlberg1, Daniel Castaño-Díez2
1Center for Cellular Imaging and NanoAnalytics, Biozentrum, University of Basel, Basel, Switzerland.
Frontiers in Molecular Biosciences
|September 21, 2018
Summary
Cryo-electron tomography coupled with subtomogram averaging reveals high-resolution 3D structures of cellular components. The Dynamo software package streamlines this process, aiding in visualizing molecular complexes and their interactions.
Area of Science:
- Structural biology
- Cell biology
- Biophysics
Background:
- Cryo-electron tomography (cryo-ET) enables 3D visualization of cellular structures.
- Subtomogram averaging is crucial for resolving high-resolution structures from cryo-ET data.
Purpose of the Study:
- To present a user-friendly workflow for subtomogram averaging using the Dynamo software package.
- To demonstrate the application of Dynamo for analyzing macromolecular complexes within their cellular context.
Main Methods:
- Application of the Dynamo software package for subtomogram averaging.
- Utilizing Flock house nodavirus (FHV) in mitochondria as a model system.
- Developing strategies for data management, asymmetry assignment, and addressing Fourier information loss.
Main Results:
- Successful implementation of a custom subtomogram averaging pipeline using Dynamo.
- Demonstration of Dynamo's adaptability to various biological scenarios.
- Detailed description of strategies for common challenges in subtomogram averaging.
Conclusions:
- Dynamo provides a comprehensive and adaptable toolbox for subtomogram averaging.
- The presented workflow facilitates the high-resolution structural analysis of cellular components.
- This approach enhances understanding of molecular interactions and spatial organization within cells.
Keywords:
cryo-electron tomographyfourier compensationsubboxingsubtomogram averagingviral membrane complexworkflowMore Related Videos
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