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Related Experiment Video

Updated: May 29, 2026

Magnetic Tweezers for the Measurement of Twist and Torque
11:41

Magnetic Tweezers for the Measurement of Twist and Torque

Published on: May 19, 2014

Magnetic tweezers for single-molecule manipulation.

Yeonee Seol1, Keir C Neuman

  • 1Laboratory of Molecular Biophysics, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA.

Methods in Molecular Biology (Clifton, N.J.)
|September 13, 2011
PubMed
Summary

This study details the design and implementation of magnetic tweezers for single-molecule DNA studies. It offers a guide for building the instrument and performing measurements of DNA mechanics and topology.

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Area of Science:

  • Biophysics
  • Molecular Biology
  • Nanotechnology

Background:

  • Magnetic tweezers are essential for studying DNA topology and protein-DNA interactions.
  • Detailed instrumentation guides for magnetic tweezers are scarce, hindering broader adoption.
  • Understanding DNA mechanics and topology is crucial in molecular biology.

Purpose of the Study:

  • To provide a comprehensive guide for designing and implementing magnetic tweezers for single-molecule measurements.
  • To detail the magnetic trap design, microscope, and illumination setup.
  • To offer procedures for DNA tether preparation and flow-cell construction.

Main Methods:

  • Detailed description of magnetic tweezers instrumentation.
  • Elucidation of magnetic trap design, microscope, and illumination setup.

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Last Updated: May 29, 2026

Magnetic Tweezers for the Measurement of Twist and Torque
11:41

Magnetic Tweezers for the Measurement of Twist and Torque

Published on: May 19, 2014

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements
08:50

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements

Published on: May 12, 2023

  • Development of a LabVIEW-based real-time position tracking algorithm.

    • Main Results:

    • A comprehensive guide for building and operating magnetic tweezers for DNA studies.
    • Procedures for creating supercoilable DNA tethers.
    • Design and construction tips for flow cells.

    Conclusions:

    • This work provides a valuable resource for researchers seeking to build and utilize magnetic tweezers for single-molecule DNA research.
    • The detailed guide facilitates the study of DNA topology and protein-DNA interactions.
    • Accessible instrumentation empowers further investigations into DNA mechanics.