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Updated: Sep 4, 2025
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Folding and Characterization of a Bio-responsive Robot from DNA Origami
Published on: December 3, 2015
14.7K
A DNA origami rotary ratchet motor
Anna-Katharina Pumm1, Wouter Engelen1, Enzo Kopperger2
1Lehrstuhl für Biomolekulare Nanotechnologie, Physik Department & Munich Institute of Biomedical Engineering, Technische Universität München, Garching near Munich, Germany.
Nature
|July 21, 2022
Summary
Researchers developed a nanoscale rotary motor using DNA origami. This motor utilizes Brownian ratchets to achieve directional motion, overcoming thermal forces and approaching biological motor capabilities.
Area of Science:
- Molecular machines
- Nanotechnology
- Biophysics
Background:
- Directional motion at the nanoscale requires overcoming random thermal forces and operating away from thermodynamic equilibrium.
- Brownian ratchets, diffusive mechanisms with broken inversion symmetry, enable directional motion and are thought to power natural biological motors.
- Previous work includes synthetic microscale systems and DNA nanotechnology constructs like pivots and hinges.
Purpose of the Study:
- To design and construct a nanoscale rotary motor.
- To utilize ratcheting mechanisms for directed motion.
- To achieve mechanical capabilities comparable to biological motors.
Main Methods:
- Development of a nanoscale rotary motor using DNA origami.
- Implementation of a ratcheting mechanism to drive motion.
- Consideration of low-Reynolds-number dynamics and stochasticity.
Main Results:
- Successful creation of a DNA origami-based nanoscale rotary motor.
- Demonstration of ratchet-driven directional motion.
- Achieved mechanical capabilities approaching those of biological motors like F1F0-ATPase.
Conclusions:
- DNA origami can be used to build functional nanoscale rotary motors.
- Ratcheting is an effective strategy for achieving directed motion in synthetic molecular machines.
- The developed motor shows promise for applications requiring precise nanoscale movement.
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