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arXiv · 1706.02685

Topology of DNA: a honeycomb stable structure under salt effect

Elsa de la Calleja·R. F Bazoni·M. S. Rocha·Marcia Barbosa
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Abstract

Atomic Force Microscopy analysis is employed to study the geometrical and topological properties of $3000$kbp DNA molecules fixed in mica substrates with $MgCl_{2}$. We found that the aggregates on the substrate surface for certain salt concentrations form a honeycomb stable structure with the addition of salt. The honeycomb, and the transition to other structures, were characterized by the \emph{Betti numbers}, which is a topological invariant property and by \emph{Hausdorff-Besicovitch fractal dimension}.

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Elsa de la Calleja, R. F Bazoni, M. S. Rocha, Marcia Barbosa. 2017-06-08. Topology of DNA: a honeycomb stable structure under salt effect. https://arxiv.org/abs/1706.02685

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