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Nature Methods
  • Review Article
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Single-molecule force spectroscopy: optical tweezers, magnetic tweezers and atomic force microscopy

Nature Methodsvolume 5pages491–505 (2008)Cite this article

Abstract

Single-molecule force spectroscopy has emerged as a powerful tool to investigate the forces and motions associated with biological molecules and enzymatic activity. The most common force spectroscopy techniques are optical tweezers, magnetic tweezers and atomic force microscopy. Here we describe these techniques and illustrate them with examples highlighting current capabilities and limitations.

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Figure 1: Schematics of optical tweezers–based assays.
Figure 2: Influence of probe size, stiffness and measurement bandwidth on spatial resolution.
Figure 3: Magnetic tweezers.
Figure 4: Atomic force microscopy.

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Acknowledgements

K.C.N. and A.N. are supported by the Intramural Program of the National Heart, Lung, and Blood Institute, National Institutes of Health. We thank G. Liou, R. Neuman and Y. Takagi for critical reading of the manuscript. K.C.N. acknowledges D. Bensimon, V. Croquette and S. Block, in addition to members of their labs.

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  1. Laboratory of Molecular Biophysics, National Heart, Lung, and Blood Institute, National Institutes of Health, Building 50, 50 South Drive, Bethesda, 20892, Maryland, USA

    Keir C Neuman

  2. Laboratory of Molecular Physiology, National Heart, Lung, and Blood Institute, National Institutes of Health, Building 50, 50 South Drive, Bethesda, 20892, Maryland, USA

    Attila Nagy

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  1. Keir C Neuman
  2. Attila Nagy

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Correspondence toKeir C Neuman.

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Neuman, K., Nagy, A. Single-molecule force spectroscopy: optical tweezers, magnetic tweezers and atomic force microscopy.Nat Methods5, 491–505 (2008). https://doi.org/10.1038/nmeth.1218

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