Abstract
We introduce magnetic torque tweezers, which enable direct single-molecule measurements of torque. Our measurements of the effective torsional stiffness C of dsDNA indicated a substantial force dependence, with C = ∼40 nm at low forces up to C = ∼100 nm at high forces. The initial torsional stiffness of RecA filaments was nearly twofold larger than that for dsDNA, yet at moderate torques further build-up of torsional strain was prevented.
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References
Strick, T.R., Allemand, J.F., Bensimon, D., Bensimon, A. & Croquette, V. Science 271, 1835–1837 (1996).
Bustamante, C., Bryant, Z. & Smith, S.B. Nature 421, 423–427 (2003).
Neuman, K.C. & Nagy, A. Nat. Methods 5, 491–505 (2008).
Lipfert, J., Hao, X. & Dekker, N.H. Biophys. J. 96, 5040–5049 (2009).
Celedon, A. et al. Nano Lett. 9, 1720–1725 (2009).
Bryant, Z. et al. Nature 424, 338–341 (2003).
La Porta, A. & Wang, M.D. Phys. Rev. Lett. 92, 190801 (2004).
Oroszi, L., Galajda, P., Kirei, H., Bottka, S. & Ormos, P. Phys. Rev. Lett. 97, 058301 (2006).
Forth, S. et al. Phys. Rev. Lett. 100, 148301 (2008).
Allemand, J.F., Bensimon, D., Lavery, R. & Croquette, V. Proc. Natl. Acad. Sci. USA 95, 14152–14157 (1998).
Strick, T. et al. Rep. Prog. Phys. 66, 1–45 (2003).
Marko, J.F. Phys. Rev. E 76, 021926 (2007).
Sheinin, M.Y. & Wang, M.D. Phys. Chem. Chem. Phys. 11, 4800–4803 (2009).
Fujimoto, B.S. & Schurr, J.M. Nature 344, 175–177 (1990).
Selvin, P.R. et al. Science 255, 82–85 (1992).
Heath, P.J., Clendenning, J.B., Fujimoto, B.S. & Schurr, J.M. J. Mol. Biol. 260, 718–730 (1996).
Moroz, J.D. & Nelson, P. Proc. Natl. Acad. Sci. USA 94, 14418–14422 (1997).
Mosconi, F., Allemand, J.F., Bensimon, D. & Croquette, V. Phys. Rev. Lett. 102, 078301 (2009).
Fulconis, R. et al. Biophys. J. 87, 2552–2563 (2004).
van der Heijden, T. et al. Nucleic Acids Res. 33, 2099–2105 (2005).
Chen, Z., Yang, H. & Pavletich, N.P. Nature 453, 489–494 (2008).
Koster, D.A., Croquette, V., Dekker, C., Shuman, S. & Dekker, N.H. Nature 434, 671–674 (2005).
Crut, A., Nair, P.A., Koster, D.A., Shuman, S. & Dekker, N.H. Proc. Natl. Acad. Sci. USA 105, 6894–6899 (2008).
Lipfert, J., Koster, D.A., Vilfan, I.D., Hage, S. & Dekker, N.H. Methods Mol. Biol. 582, 71–89 (2009).
Gosse, C. & Croquette, V. Biophys. J. 82, 3314–3329 (2002).
te Velthuis, A.J., Kerssemakers, J.W., Lipfert, J. & Dekker, N.H. Biophys. J. 99, 1292–1302 (2010).
Czerwinski, F., Richardson, A.C. & Oddershede, L.B. Opt. Express 17, 13255–13269 (2009).
Acknowledgements
We thank M. Rojer for help with initial measurements, J. van der Does, D. de Roos and J. Beekman for help with instrumentation, and S. Hage and S. Donkers for providing DNA constructs. This work was supported by the Netherlands Organization for Scientific Research (Nederlandse Organisatie voor Wetenschappelijk Onderzoek), Delft University of Technology and the European Science Foundation.
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J.L., J.W.J.K. and N.H.D. designed the study, J.L. and T.J. performed the experiments, J.W.J.K. wrote the angular tracking routine and J.L. and N.H.D. wrote the manuscript.
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Lipfert, J., Kerssemakers, J., Jager, T. et al. Magnetic torque tweezers: measuring torsional stiffness in DNA and RecA-DNA filaments. Nat Methods 7, 977–980 (2010). https://doi.org/10.1038/nmeth.1520
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DOI: https://doi.org/10.1038/nmeth.1520
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