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Related Concept Videos

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Super-resolution Fluorescence Microscopy

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Related Experiment Video

Updated: Jun 14, 2026

Super-resolution Imaging of the Cytokinetic Z Ring in Live Bacteria Using Fast 3D-Structured Illumination Microscopy (f3D-SIM)
12:44

Super-resolution Imaging of the Cytokinetic Z Ring in Live Bacteria Using Fast 3D-Structured Illumination Microscopy (f3D-SIM)

Published on: September 29, 2014

Single-molecule and superresolution imaging in live bacteria cells.

Julie S Biteen1, W E Moerner

  • 1Department of Chemistry, Stanford University, Stanford, California 94305-5080, USA.

Cold Spring Harbor Perspectives in Biology
|March 20, 2010
PubMed
Summary

Single-molecule imaging reveals protein dynamics in live bacteria. This superresolution technique provides high-resolution insights into bacterial protein behavior and organization.

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Last Updated: Jun 14, 2026

Super-resolution Imaging of the Cytokinetic Z Ring in Live Bacteria Using Fast 3D-Structured Illumination Microscopy (f3D-SIM)
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Super-Resolution Live Cell Imaging of Subcellular Structures
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Area of Science:

  • Microbiology
  • Biophysics
  • Cell Biology

Background:

  • Single-molecule imaging offers high-resolution biophysical measurements without ensemble averaging.
  • Superresolution microscopy surpasses the diffraction limit for enhanced spatial resolution.
  • Bacterial protein dynamics and localization are crucial for cellular function.

Purpose of the Study:

  • To demonstrate the utility of single-molecule and superresolution imaging in live bacterial cells.
  • To investigate the dynamics and localization of key bacterial proteins.
  • To achieve sub-40-nm spatial resolution in live Caulobacter crescentus imaging.

Main Methods:

  • Application of single-molecule imaging techniques.
  • Utilization of superresolution microscopy.
  • Live-cell imaging of Caulobacter crescentus.

Main Results:

  • Determined the diffusion coefficient and dynamics of the histidine protein kinase PleC.
  • Characterized the localization behavior of the polar protein PopZ.
  • Investigated the treadmilling behavior and superstructure of the structural protein MreB with sub-40-nm resolution.

Conclusions:

  • Single-molecule and superresolution imaging are powerful tools for bacterial cell biology.
  • These methods provide unprecedented insights into protein behavior in live bacteria.
  • Detailed understanding of bacterial protein dynamics and organization is achievable in vivo.