A Three-Station DNA Catenane Rotary Motor with Controlled Directionality

作者：Lu Chun Hua; Cecconello Alessandro; Elbaz Johann; Credi Alberto; Willner Itamar^*

来源：Nano Letters, 2013, 13(5): 2303-2308.

DOI：10.1021/nl401010e

• DNA
• machine
• catenane
• nanotechnology
• fluorescence resonance energy transfer (FRET)

The assembly of DNA machines represents a central effort in DNA nanotechnology. We report on the first DNA rotor system composed of a two-ring catenane. The DNA rotor ring rotates in dictated directions along a wheel, and it occupies three distinct sites. Hg2+/cysteine or pH (H+/OH-) act as fuels or antifuels in positioning the rotor ring. Analysis of the kinetics reveals directional clockwise or anticlockwise population of the target-sites (>85%), and the rotor's direction is controlled by the shortest path on the wheel.

• 出版日期2013-5