Regulation at a distance of biomolecular interactions using a DNA origami nanoactuator

Yonggang Ke (), Travis Meyer, William M. Shih and Gaetan Bellot ()
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Yonggang Ke: Georgia Institute of Technology and Emory University
Travis Meyer: Georgia Institute of Technology and Emory University
William M. Shih: Wyss Institute for Biologically Inspired Engineering, Harvard University
Gaetan Bellot: Institut de Génomique Fonctionnelle, Centre National de la Recherche Scientifique, CNRS Unité Mixte de Recherche UMR 5203, Institut National de la Santé et de la Recherche Médicale, INSERM U1191, 141 rue de la Cardonille, F-34000 Montpellier, France

Nature Communications, 2016, vol. 7, issue 1, 1-8

Abstract: Abstract The creation of nanometre-sized structures that exhibit controllable motions and functions is a critical step towards building nanomachines. Recent developments in the field of DNA nanotechnology have begun to address these goals, demonstrating complex static or dynamic nanostructures made of DNA. Here we have designed and constructed a rhombus-shaped DNA origami ‘nanoactuator’ that uses mechanical linkages to copy distance changes induced on one half (‘the driver’) to be propagated to the other half (‘the mirror’). By combining this nanoactuator with split enhanced green fluorescent protein (eGFP), we have constructed a DNA–protein hybrid nanostructure that demonstrates tunable fluorescent behaviours via long-range allosteric regulation. In addition, the nanoactuator can be used as a sensor that responds to specific stimuli, including changes in buffer composition and the presence of restriction enzymes or specific nucleic acids.

Date: 2016
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DOI: 10.1038/ncomms10935

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