Abstract
Details of the stereochemistry of the 2′5′ and 3′5′ dinucleoside monophosphates of polynueleotides have been delineated in aqueous solution using nuclear magnetic resonance spectroscopy. Incorporation of these experimentally determined geometries into the structure of polynueleotides reveals that the intrinsic spatial configurations of the 2′5′ bonds cannot support helical structures whereas the geometries of 3′5′ bonds allow the formation of helical configurations for RNA.
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Dhingra, M., Sarma, R. Why do nucleic acids have 3′5′ phosphodiester bonds?. Nature 272, 798–801 (1978). https://doi.org/10.1038/272798a0
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DOI: https://doi.org/10.1038/272798a0
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