Three studies have characterized the full complement of RNA folding in cells. They find large numbers of secondary structures in RNA, some of which may have functional consequences for the cell. See Letters p.696, p.701 & p.706
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Ramos, S., Laederach, A. A second layer of information in RNA. Nature 505, 621–622 (2014). https://doi.org/10.1038/505621a
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DOI: https://doi.org/10.1038/505621a
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