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3D reconstruction and comparison of shapes of DNA minicircles observed by cryo-electron microscopy
Journal article   Open access   Peer reviewed

3D reconstruction and comparison of shapes of DNA minicircles observed by cryo-electron microscopy

Arnaud Amzallag, Cédric Vaillant, Mathews Jacob, Michael Unser, Jan Bednar, Jason D Kahn, Jacques Dubochet, Andrzej Stasiak and John H Maddocks
Nucleic acids research, Vol.34(18), pp.e125-e125
10/2006
DOI: 10.1093/nar/gkl675
PMCID: PMC1635295
PMID: 17012274
url
https://doi.org/10.1093/nar/gkl675View
Published (Version of record) Open Access

Abstract

We use cryo-electron microscopy to compare 3D shapes of 158 bp long DNA minicircles that differ only in the sequence within an 18 bp block containing either a TATA box or a catabolite activator protein binding site. We present a sorting algorithm that correlates the reconstructed shapes and groups them into distinct categories. We conclude that the presence of the TATA box sequence, which is believed to be easily bent, does not significantly affect the observed shapes.
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