Biomolecular force measurements and the atomic force microscope |
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Authors: | Allison David P Hinterdorfer Peter Han Wenhai |
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Affiliation: | Department of Biochemistry and Cellular and Molecular Biology, The University of Tennessee, Knoxville, TN 37932, USA. allisondp@ornl.gov |
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Abstract: | The atomic force microscope (AFM) is a surface-sensitive instrument capable of imaging biological samples at nanometer resolution in all environments including liquids. The sensitivity of the AFM cantilever, to forces in the pico Newton range, has been exploited to measure breakaway forces between biomolecules and to measure folding-unfolding forces within single proteins. By attaching specific antibodies to cantilevers the simultaneous imaging of target antigens and identification of antigen-antibody interactions have been demonstrated. |
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