Researchers identify a novel double-stranded DNA structure

Scientists have been proposing a novel form of double-stranded DNA structure since 1996. Referred to as ‘S-DNA’, it is produced from stretching the B-form DNA beyond a certain ‘transition force’ of around 65 pN to approximately 1.7-fold in length (termed as DNA overstretching transition). Its existence has sparked a 16-year scientific debate since it was proposed, as many other evidences suggested that DNA overstretching transition was merely a force-induced DNA melting transition, leading to peeled-apart single-stranded DNA.
View the original article here: Researchers identify a novel double-stranded DNA structure

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