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Applying Live Cell Imaging and Cryo-Electron Tomography to Resolve Spatiotemporal Features of the Legionella pneumophila Dot/Icm Secretion System
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Immunology and Infection
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JoVE Journal Immunology and Infection
Applying Live Cell Imaging and Cryo-Electron Tomography to Resolve Spatiotemporal Features of the Legionella pneumophila Dot/Icm Secretion System

Applying Live Cell Imaging and Cryo-Electron Tomography to Resolve Spatiotemporal Features of the Legionella pneumophila Dot/Icm Secretion System

DOI:
10.3791/60693-v

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09:12 min

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March 10, 2020

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, , , ,
1Department of Microbial Pathogenesis, Boyer Center for Molecular Medicine,Yale University School of Medicine, 2Microbial Sciences Institute,Yale University, 3Department of Microbiology and Molecular Genetics, McGovern Medical School,The University of Texas Health Science Center at Houston

Chapters

  • 00:04Introduction
  • 00:55Live Cell Imaging of L. pneumophila with Fluorescently Tagged Dot/Icm Components
  • 02:47Quantification of Polar Localization and Dynamics of Dot/Icm Components
  • 05:36Detection of sfGFP Mass Density with Cryo-ET
  • 06:23Results: Imaging Dot/Icm Secretion Systems in Intact Bacteria
  • 08:17Conclusion

Summary

Automatic Translation

Automatic Translation

Imaging of bacterial cells is an emerging systems biology approach focused on defining static and dynamic processes that dictate the function of large macromolecular machines. Here, integration of quantitative live cell imaging and cryo-electron tomography is used to study Legionella pneumophila type IV secretion system architecture and functions.

Tags

Keywords: Live Cell ImagingCryo-electron TomographyLegionella PneumophilaDot/Icm Secretion SystemBacterial Secretion ComplexesHost-pathogen InteractionsStructural-functional RelationshipsAgarose PadsFluorescence MicroscopyPolarity Quantification

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