Abstract
We describe the mechanical separation of the two complementary strands of a single molecule of bacteriophage λ DNA. The 3′ and 5′ extremities on one end of the molecule are pulled progressively apart, and this leads to the opening of the double helix. The typical forces along the opening are in the range of 10–15 pN. The separation force signal is shown to be related to the local GC vs. AT content along the molecule. Variations of this content on a typical scale of 100–500 bases are presently detected.
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Bockelmann U. Essavaz-Roulet B. & Heslot F. (1997) Phys. Rev. Lett. 79 in press.
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10.1103/PhysRevLett.79.4489
)
Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 26, 2002, 10:35 a.m.) |
Deposited | 3 years, 4 months ago (April 13, 2022, 3:23 p.m.) |
Indexed | 3 weeks, 2 days ago (Aug. 6, 2025, 8:18 a.m.) |
Issued | 27 years, 10 months ago (Oct. 28, 1997) |
Published | 27 years, 10 months ago (Oct. 28, 1997) |
Published Online | 27 years, 10 months ago (Oct. 28, 1997) |
Published Print | 27 years, 10 months ago (Oct. 28, 1997) |
@article{Essevaz_Roulet_1997, title={Mechanical separation of the complementary strands of DNA}, volume={94}, ISSN={1091-6490}, url={http://dx.doi.org/10.1073/pnas.94.22.11935}, DOI={10.1073/pnas.94.22.11935}, number={22}, journal={Proceedings of the National Academy of Sciences}, publisher={Proceedings of the National Academy of Sciences}, author={Essevaz-Roulet, B. and Bockelmann, U. and Heslot, F.}, year={1997}, month=oct, pages={11935–11940} }