Cited by 52Advanced biosensing and bioanalysis techniquesDNA and Nucleic Acid ChemistryDNA and Biological Computing

Structural Transformation of Wireframe DNA Origami via DNA Polymerase Assisted Gap-Filling

Agarwal, Nayan P., Matthies, Michael, Joffroy, Bastian, Schmidt, Thorsten L.·2018·ACS Nano

Abstract

The programmability of DNA enables constructing nanostructures with almost any arbitrary shape, which can be decorated with many functional materials. Moreover, dynamic structures can be realized such as molecular motors and walkers. In this work, we have explored the possibility to synthesize the complementary sequences to single-stranded gap regions in the DNA origami scaffold cost effectively by a DNA polymerase rather than by a DNA synthesizer. For this purpose, four different wireframe DNA origami structures were designed to have single-stranded gap regions. This reduced the number of staple strands needed to determine the shape and size of the final structure after gap filling. For this, several DNA polymerases and single-stranded binding (SSB) proteins were tested, with T4 DNA polymerase being the best fit. The structures could be folded in as little as 6 min, and the subsequent optimized gap-filling reaction was completed in less than 3 min. The introduction of flexible gap regions results in fully collapsed or partially bent structures due to entropic spring effects. Finally, we demonstrated structural transformations of such deformed wireframe DNA origami structures with DNA polymerases including the expansion of collapsed structures and the straightening of curved tubes. We anticipate that this approach will become a powerful tool to build DNA wireframe structures more material-efficiently, and to quickly prototype and test new wireframe designs that can be expanded, rigidified, or mechanically switched. Mechanical force generation and structural transitions will enable applications in structural DNA nanotechnology, plasmonics, or single-molecule biophysics.

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Crossref · 10.1021/acsnano.7b08345

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  • The main approaches in structural DNA nanotechnology can be divided into three groups: DNA origami, DNA tile assembly, and wireframe DNA structures.

    “The main approaches in structural DNA nanotechnology can be divided into three groups: DNA origami, DNA tile assembly, and wireframe DNA structures,104”

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Authors
Agarwal, N. P., Matthies, M., Joffroy, B., & Schmidt, T. L.
Affiliations
Center for Advancing Electronics Dresden (DE)
Corresponding author
Schmidt, Thorsten L.
Venue
ACS Nano
Published
2018-02-16
Volume
12
Issue
3
Pages
2546-2553
ISSN
  • 1936-0851 (ISSN-L)
  • 1936-086X
OpenAlex
W2786750391
Cited by
52
References
38
Citations by year
2026: 5 · 2025: 4 · 2024: 4 · 2023: 9 · 2022: 7 · 2021: 3 · 2020: 12 · 2019: 5 · 2018: 3
FWCI
2.04
Type
journal article
Language
en
Open access
closed
Locations
  • ACS Nano (publishedVersion)
  • PubMed (publishedVersion)
Funders
Deutsche Forschungsgemeinschaft (043_2615A6)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Advanced biosensing and bioanalysis techniques
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA and Nucleic Acid Chemistry
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA and Biological Computing
Keywords
DNA origami, T4 DNA polymerase, single-stranded DNA binding protein, structural change, DNA nanotechnology, DNA nanotubes, mechanical switching
MeSH terms
DNA, DNA-Directed DNA Polymerase, DNA, Single-Stranded, Kinetics, Models, Molecular, Nucleic Acid Conformation, Thermodynamics, Viral Proteins, Bacteriophage T4, Nanotechnology, Nanostructures

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