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Related Concept Videos

Atomic Force Microscopy01:08

Atomic Force Microscopy

Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...
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The cytoskeletal architecture can be studied using different microscopic and biochemical techniques. Electron microscopy was instrumental in discovering the cytoskeletal architecture around the 1960s, which allowed obtaining structural information at a high-resolution level. However, the sample preparation procedure often limits this ability in biological samples. Several protocols have been developed over the years to optimize sample preparation. In one of the protocols known as rotary...

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Updated: May 26, 2026

Atomic Force Microscopy Imaging and Force Spectroscopy of Supported Lipid Bilayers
10:15

Atomic Force Microscopy Imaging and Force Spectroscopy of Supported Lipid Bilayers

Published on: July 22, 2015

Atomic force microscopy for the study of membrane proteins.

Dimitrios Fotiadis1

  • 1Institute of Biochemistry and Molecular Medicine, and Swiss National Centre of Competence in Research TransCure, University of Bern, CH-3012 Bern, Switzerland. dimitrios.fotiadis@ibmm.unibe.ch

Current Opinion in Biotechnology
|December 20, 2011
PubMed
Summary

Atomic Force Microscopy (AFM) reveals the structure and dynamics of membrane proteins in their native lipid bilayer environment. This technique offers high resolution for studying these crucial biological molecules.

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Area of Science:

  • Biophysics
  • Structural Biology
  • Cell Biology

Background:

  • Membrane proteins are essential for fundamental cellular functions, including communication and transport.
  • Studying membrane proteins in their native lipid bilayer environment is crucial for understanding their function.
  • The Atomic Force Microscope (AFM) is a powerful tool for investigating biological structures at the nanoscale.

Purpose of the Study:

  • To review advances in using AFM for studying membrane proteins.
  • To highlight AFM's capability in imaging membrane proteins under near-physiological conditions.
  • To showcase AFM's application in analyzing reconstituted and native membranes.

Main Methods:

  • Atomic Force Microscopy (AFM) for high-resolution imaging.
  • In-situ analysis of membrane proteins within lipid bilayers.
  • Single-molecule imaging and conformational analysis.

Main Results:

  • AFM enables subnanometer resolution imaging of membrane proteins.
  • The technique allows visualization of supramolecular organization and conformational changes.
  • AFM provides insights into the dynamics of membrane proteins in their native environment.

Conclusions:

  • AFM is a key instrument for determining the native structure and dynamics of membrane proteins.
  • Recent AFM developments enhance its utility for imaging membrane proteins.
  • AFM imaging contributes significantly to understanding membrane protein function and organization.