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TitleA DNA turbine powered by a transmembrane potential across a nanopore.
Journal, issue, pagesNat Nanotechnol, Vol. 19, Issue 3, Page 338-344, Year 2024
Publish dateOct 26, 2023
AuthorsXin Shi / Anna-Katharina Pumm / Christopher Maffeo / Fabian Kohler / Elija Feigl / Wenxuan Zhao / Daniel Verschueren / Ramin Golestanian / Aleksei Aksimentiev / Hendrik Dietz / Cees Dekker /
PubMed AbstractRotary motors play key roles in energy transduction, from macroscale windmills to nanoscale turbines such as ATP synthase in cells. Despite our abilities to construct engines at many scales, ...Rotary motors play key roles in energy transduction, from macroscale windmills to nanoscale turbines such as ATP synthase in cells. Despite our abilities to construct engines at many scales, developing functional synthetic turbines at the nanoscale has remained challenging. Here, we experimentally demonstrate rationally designed nanoscale DNA origami turbines with three chiral blades. These DNA nanoturbines are 24-27 nm in height and diameter and can utilize transmembrane electrochemical potentials across nanopores to drive DNA bundles into sustained unidirectional rotations of up to 10 revolutions s. The rotation direction is set by the designed chirality of the turbine. All-atom molecular dynamics simulations show how hydrodynamic flows drive this turbine. At high salt concentrations, the rotation direction of turbines with the same chirality is reversed, which is explained by a change in the anisotropy of the electrophoretic mobility. Our artificial turbines operate autonomously in physiological conditions, converting energy from naturally abundant electrochemical potentials into mechanical work. The results open new possibilities for engineering active robotics at the nanoscale.
External linksNat Nanotechnol / PubMed:37884658 / PubMed Central
MethodsEM (single particle)
Resolution14.0 - 15.0 Å
Structure data

EMDB-17600: DNA-origami turbine with left-handed chirality
Method: EM (single particle) / Resolution: 15.0 Å

EMDB-17606: DNA-origami turbine with right-handed chirality
Method: EM (single particle) / Resolution: 14.0 Å

Source
  • Inovirus M13
  • synthetic construct (others)

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