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Wringing out DNA.

Archive ouverte | Lionnet, T. | CCSD

International audience. The chiral nature of DNA plays a crucial role in cellular processes. Here we use magnetic tweezers to explore one of the signatures of this chirality, the coupling between stretch and twist d...

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Archive ouverte | Allemand, Jf | CCSD

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Stretched and overwound DNA forms a Pauling-like structure with exposed bases.

Archive ouverte | Allemand, Jf | CCSD

International audience. We investigate structural transitions within a single stretched and supercoiled DNA molecule. With negative supercoiling, for a stretching force >0.3 pN, we observe the coexistence of B-DNA a...

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