Nano Archive

PX DNA triangle oligomerized using a novel three-domain motif

Liu, Wenyan and Wang, Xing and Wang, Tong and Sha, Ruojie and Seeman, Nadrian C. (2008) PX DNA triangle oligomerized using a novel three-domain motif. NANO LETTERS, 8 (1). pp. 317-322.

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Official URL: http://pubs.acs.org/doi/abs/10.1021/nl072803r

Abstract

Structural DNA nanotechnology is directed at building objects, lattices, and arrays from cohesive interactions between DNA molecules. The predominant means of doing this takes advantage of the information inherent in Watson−Crick base pairing in duplex formation and in sticky-ended cohesion. Nevertheless, other forms of nucleic acid cohesion are also known, particularly paranemic edge-sharing interactions (PX). Here we report the formation of a triangular species that has four strands per edge, held together by PX interactions. We demonstrate by nondenaturing gel electrophoresis and by atomic force microscopy (AFM) that we can combine a partial triangle with other strands to form a four-stranded molecule that is robust. By combining them with a new mixed-fusion type of three-domain molecule, we demonstrate by AFM that these triangles can be self-assembled into a linear array.

Item Type:Article
Subjects:Material Science > Bio materials
ID Code:6439
Deposited By:IoN
Deposited On:06 Aug 2009 11:27
Last Modified:06 Aug 2009 11:27

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