Cavendish Laboratory, Department of Physics, University of Cambridge , JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom.
Nano Lett. 2014 Mar 12;14(3):1270-4. doi: 10.1021/nl404183t. Epub 2014 Feb 5.
We show DNA origami nanopores that respond to high voltages by a change in conformation on glass nanocapillaries. Our DNA origami nanopores are voltage sensitive as two distinct states are found as a function of the applied voltage. We suggest that the origin of these states is a mechanical distortion of the DNA origami. A simple model predicts the voltage dependence of the structural change. We show that our responsive DNA origami nanopores can be used to lower the frequency of DNA translocation by 1 order of magnitude.
我们展示了在玻璃纳米毛细管上通过构象变化对高电压做出响应的 DNA 折纸纳米孔。我们的 DNA 折纸纳米孔对电压敏感,因为作为施加电压的函数可以发现两种不同的状态。我们认为这些状态的起源是 DNA 折纸的机械变形。一个简单的模型预测了结构变化的电压依赖性。我们表明,我们的响应性 DNA 折纸纳米孔可用于将 DNA 易位的频率降低 1 个数量级。