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Switching DNA and RNA on and off

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DNA and RNA are naturally polarised molecules. Scientists believe that these molecules have an in-built polarity that can be reoriented or reversed fully or in part under an electric field. In a new study published in EPJ E, See-Chuan Yam from the University of Malaya, Kuala Lumpur, Malaysia, and colleagues show that all the DNA and RNA building blocks, or nucleobases, exhibit a non-zero polarisation in the presence of polar atoms or molecules such as amidogen and carbonyl.

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