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Related Experiment Video

Updated: May 29, 2026

Nanomanipulation of Single RNA Molecules by Optical Tweezers
06:59

Nanomanipulation of Single RNA Molecules by Optical Tweezers

Published on: August 20, 2014

DNA zipper-based tweezers.

Preston B Landon1, Srinivasan Ramachandran, Alan Gillman

  • 1Department of Bioengineering, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States.

Langmuir : the ACS Journal of Surfaces and Colloids
|August 31, 2011
PubMed
Summary
This summary is machine-generated.

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Researchers developed novel DNA tweezers using a zipper mechanism. This system enables precise control over molecular interactions, offering a robust and compact design for nanomachines.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Nanotechnology

Background:

  • DNA nanotechnology utilizes DNA's self-assembly properties for molecular devices.
  • Existing DNA tweezers often require specific overhangs for operation.

Purpose of the Study:

  • To design and develop novel DNA zippers and tweezers.
  • To create a robust, compact, and regenerative molecular tweezer system.

Main Methods:

  • Engineered a DNA zipper system with normal (N), weak (W, inosine-substituted), and opening (O) strands.
  • Constructed tweezers by hinging N and W strands together.
  • Utilized competitive displacement by the opening strand (O) to control tweezer function.

Main Results:

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

Published on: May 12, 2023

Analyzing Telomeric Protein-DNA Interactions Using Single-Molecule Magnetic Tweezers
11:21

Analyzing Telomeric Protein-DNA Interactions Using Single-Molecule Magnetic Tweezers

Published on: August 30, 2024

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Last Updated: May 29, 2026

Nanomanipulation of Single RNA Molecules by Optical Tweezers
06:59

Nanomanipulation of Single RNA Molecules by Optical Tweezers

Published on: August 20, 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

Analyzing Telomeric Protein-DNA Interactions Using Single-Molecule Magnetic Tweezers
11:21

Analyzing Telomeric Protein-DNA Interactions Using Single-Molecule Magnetic Tweezers

Published on: August 30, 2024

  • Demonstrated successful operation of DNA tweezers using the zipper mechanism.
  • Showcased control over opening and closing kinetics.
  • Developed tweezers that do not require single-stranded DNA overhangs for operation.

    • Conclusions:

    • The DNA zipper mechanism provides a robust and compact tweezer system.
    • This system offers potential for integration into complex nanomachines.
    • The design allows for regenerative cycling between open and closed states.