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1Department of Physics and Astronomy, VU University Amsterdam, Amsterdam, The Netherlands. wroos@few.vu.nl
Methods in Molecular Biology (Clifton, N.J.)
|September 13, 2011
Summary
Understanding virus mechanics is key to virology. Atomic force microscopy (AFM) nanoindentation measures viral mechanical properties like stiffness and failure points in a liquid environment.
Area of Science:
- Biophysics
- Virology
- Materials Science
Background:
- Understanding virus structure and function requires knowledge of their mechanical properties.
- Atomic force microscopy (AFM) is a valuable tool for probing material characteristics at the nanoscale.
Purpose of the Study:
- To detail experimental procedures for viral nanoindentation using AFM.
- To enable the characterization of single virus mechanical properties.
Main Methods:
- Single-particle nanoindentation using atomic force microscopy (AFM).
- Procedures include surface preparation, AFM imaging, nanoindentation, and force-distance curve analysis.
- Experiments conducted in a liquid environment for physiological relevance.
Main Results:
- AFM nanoindentation allows determination of viral spring constant and Young's modulus.
- Quantification of the force and deformation at which viral structures fail.
- Provides a single-particle approach to mechanical characterization.
Conclusions:
- Detailed methods enable robust characterization of viral mechanical properties.
- Probing viruses in liquid offers insights into their behavior in relevant biological conditions.
- This approach enhances understanding of virus structure-function relationships.
