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ReportsRapid Chiral Assembly of Rigid DNA Building Blocks for Molecular Nanofabrication
Practical components for three-dimensional molecular nanofabrication must be simple to produce, stereopure, rigid, and adaptable. We report a family of DNA tetrahedra, less than 10 nanometers on a side, that can self-assemble in seconds with near-quantitative yield of one diastereomer. They can be connected by programmable DNA linkers. Their triangulated architecture confers structural stability; by compressing a DNA tetrahedron with an atomic force microscope, we have measured the axial compressibility of DNA and observed the buckling of the double helix under high loads.
1 Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, UK.
2 Department of Physics and Astronomy, de Boelelaan 1081, Vrije Universiteit, 1081 H Amsterdam, Netherlands. * To whom correspondence should be addressed. E-mail: a.turberfield{at}physics.ox.ac.uk
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Science. ISSN 0036-8075 (print), 1095-9203 (online)