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Issue 51, 2016
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Stabilisation of self-assembled DNA crystals by triplex-directed photo-cross-linking

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Abstract

The tensegrity triangle is a robust DNA motif that can self-assemble to generate macroscopic three-dimensional crystals. However, the stability of these crystals is dependent on the high ionic conditions used for crystal growth. Here we demonstrate that a triplex-forming oligonucleotide can be used to direct the specific intercalation, and subsequent photo-cross-linking, of 4,5′,8-trimethylpsoralen to single or multiple loci within or between the tiles of the crystal. Cross-linking between the tiles of the crystal improves their thermal stability. Such an approach is likely to facilitate the removal of crystals from their mother liquor and may prove useful for applications that require greater crystal stability.

Graphical abstract: Stabilisation of self-assembled DNA crystals by triplex-directed photo-cross-linking

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Publication details

The article was received on 03 May 2016, accepted on 24 May 2016 and first published on 06 Jun 2016


Article type: Communication
DOI: 10.1039/C6CC03695C
Citation: Chem. Commun., 2016,52, 8014-8017
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    Stabilisation of self-assembled DNA crystals by triplex-directed photo-cross-linking

    H. O. Abdallah, Y. P. Ohayon, A. R. Chandrasekaran, R. Sha, K. R. Fox, T. Brown, D. A. Rusling, C. Mao and N. C. Seeman, Chem. Commun., 2016, 52, 8014
    DOI: 10.1039/C6CC03695C

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