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ACS Nano. 2019 Nov 26;13(11):12591-12598. doi: 10.1021/acsnano.9b03473. Epub 2019 Oct 15.

Evolutionary Refinement of DNA Nanostructures Using Coarse-Grained Molecular Dynamics Simulations.

Author information

1
Department of Medical Biochemistry and Biophysics , Karolinska Institutet , 17177 Stockholm , Sweden.

Abstract

In the past decade, DNA nanostructures have made the leap from small assemblies of a handful of oligonucleotides to megadalton objects assembled from hundreds or thousands of component DNA strands. Most DNA designs today are either lattice based with simple and reliable design tools or lattice free with a larger shape space but more challenging design and lower rigidity. In parallel with the development of DNA nanostructures, software packages for the simulation of nucleic acids have seen rapid development allowing for the simulation of the dynamics of full DNA nanostructure assemblies. Here, we implement an unsupervised software based on the coarse-grained molecular dynamics package oxDNA to simulate DNA origami structures and evaluate their rigidity. From this, the software autonomously produces mutant structures by adding or removing base pairs or modifying the positions of internal supports. These mutant structures are iteratively generated and evaluated by simulation to create an in silico evolution toward more rigid DNA nanostructures.

KEYWORDS:

DNA nanotechnology; DNA origami; molecular dynamics; shape optimization; simulation

PMID:
31613092
DOI:
10.1021/acsnano.9b03473

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