A bipedal DNA motor that travels back and forth between two DNA origami tiles

Miran Liber, Toma E. Tomov, Roman Tsukanov, Yaron Berger, Eyal Nir

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

In this work, the successful operation of a dynamic DNA device constructed from two DNA origami building blocks is reported. The device includes a bipedal walker that strides back and forth between the two origami tiles. Two different DNA origami tiles are first prepared separately; they are then joined together in a controlled manner by a set of DNA strands to form a stable track in high yield as confirmed by singlemolecule fluorescence (SMF). Second, a bipedal DNA motor, initially attached to one of the two origami units and operated by sequential interaction with "fuel" and "antifuel" DNA strands, moves from one origami tile to another and then back again. The operational yield, measured by SMF, was similar to that of a motor operating on a similar track embedded in a single origami tile, confirming that the transfer across the junction from one tile to the other does not result in dissociation that is any more than that of steps on a single tile. These results demonstrate that moving parts can reliably travel from one origami unit to another, and it demonstrates the feasibility of dynamic DNA molecular machines that are made of more than a single origami building block. This study is a step toward the development of motors that can stride over micrometer distances.

Original languageEnglish
Pages (from-to)568-575
Number of pages8
JournalSmall
Volume11
Issue number5
DOIs
StatePublished - 4 Feb 2015

ASJC Scopus subject areas

  • Biotechnology
  • Biomaterials
  • Chemistry (all)
  • Materials Science (all)

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