I must protest against the knowing groans expended every time a scientist is personally affronted by the image of a left-handed DNA helix (Nature 467, 401; 2010). I would remind the groaners that DNA handedness depends on its molecular sequence — witness a seminal paper you published more than 30 years ago: 'Molecular structure of a left-handed double-helical DNA fragment at atomic resolution' (A. H.-J. Wang et al. Nature 282, 680–686; 1979).
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Erives, A. Left-handed DNA can be right. Nature 467, 789 (2010). https://doi.org/10.1038/467789e
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DOI: https://doi.org/10.1038/467789e