Stretching the truth: JILA biophysicists help unravel DNA stretching mystery

Using a new experimental test structure, biophysicists at JILA have unravelled part of a 15-year mystery in the mechanics of DNA - just how the molecule manages to suddenly extend to almost twice its normal length. The new test structure should support research on DNA elasticity as a standard for tiny forces and help refine studies of how drugs and other substances bind to DNA...

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