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Related Experiment Videos

Life on biomembranes viewed with the atomic force microscope

H Oberleithner1, J Geibel, W Guggino

  • 1Department of Physiology, University of Würzburg, Federal Republic of Germany.

Wiener Klinische Wochenschrift
|June 27, 1997
PubMed
Summary

Atomic force microscopy (AFM) images hard surfaces at atomic resolution. This review details AFM

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Area of Science:

  • Biophysics
  • Cell Biology
  • Microscopy

Background:

  • Atomic force microscopy (AFM) is a powerful near-field microscope invented in 1986.
  • While AFM routinely images hard surfaces at atomic resolution, imaging soft biological samples remains challenging.

Purpose of the Study:

  • Introduce AFM techniques to experimental biologists.
  • Review recent advancements in imaging molecular structures of biomembranes using AFM.
  • Provide detailed applications of AFM with representative biological examples.

Main Methods:

  • Atomic Force Microscopy (AFM) for high-resolution imaging.
  • In vivo imaging of cellular processes.
  • Visualization of isolated molecular structures and complexes.

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Main Results:

  • Demonstrated AFM's capability in imaging plasma membrane turnover in migrating renal epithelial cells.
  • Visualized cloned potassium channels from kidney.
  • Imaged macromolecular pore complexes of the nuclear envelope in kidney cells and oocytes.

Conclusions:

  • AFM is a valuable tool for studying soft biological samples at the molecular level.
  • Nuclear pore complexes can be visualized with AFM, likened to 'birthday candles on a Guglhupf'.