Related Experiment Video
Updated: Jun 26, 2025

Electron Cryotomography of Bacterial Cells
Published on: May 6, 2010
Cryo-electron tomography of stationary phase Burkholderia thailandensis
Kanika Khanna1,2, Matthew D Welch2
1Gladstone Institute of Virology, Gladstone Institutes, San Francisco, California, United States.
Abstract:
Burkholderia species belonging to the pseudomallei group include significant human and animal pathogens as well as the non-pathogenic species Burkholderia thailandensis . These bacteria co-opt the host cell machinery for their replication and spread between host cells. Thus, it is of interest to understand the structural features of these cells that contribute to host cell colonization and virulence. This study provides high-resolution cryo-electron tomograms of stationary phase Burkholderia thailandensis . It reveals the presence of compact nucleoids and storage granules, as well as examples of the type III secretion system and chemoreceptor arrays. The data can be used to investigate the near-atomic structure of stationary-phase bacterial macromolecules, such as ribosomes.
Insights
This study used cryo-electron tomography to visualize Burkholderia thailandensis, revealing structural details like compact nucleoids and storage granules. These findings offer insights into bacterial cell structures important for host colonization.
Area of Science:
- Microbiology
- Structural Biology
- Bacteriology
Background:
- The Burkholderia pseudomallei group contains important pathogens and the non-pathogenic Burkholderia thailandensis.
- Understanding bacterial structural features is key to comprehending host cell colonization and virulence.
Purpose of the Study:
- To provide high-resolution structural insights into stationary phase Burkholderia thailandensis.
- To identify key cellular components involved in bacterial pathogenesis.
Main Methods:
- High-resolution cryo-electron tomography was employed.
- Analysis focused on stationary phase Burkholderia thailandensis.
Main Results:
- Compact nucleoids and storage granules were observed.
- The type III secretion system and chemoreceptor arrays were visualized.
- The study generated near-atomic structural data of bacterial macromolecules.
Conclusions:
- Cryo-electron tomography reveals detailed structures of Burkholderia thailandensis.
- These structural insights can inform future research on bacterial virulence and pathogenesis.
Related Concept Videos
Electron Microscope Tomography and Single-particle Reconstruction
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
Cryo-electron Microscopy

