1999/08/31 by Zhou Haijun, Ou-Yang Zhong-can
Physics and Astronomy · Biochemistry, Genetics and Molecular Biology · #cond-mat.soft #cond-mat.stat-mech #physics.bio-ph #q-bio
published as Mod. Phys. Lett. B13, 999-1003 (1999). · 3 pages. A new paragraph as well as two figures are added in the revised paper. A new reference (Ref. 7) is included
arxiv created 1999/09/29 · arxiv updated 2009/11/30
The folding angle distribution of stretched and negatively supercoiled DNA double-helix is investigated based on a theoretical model we proposed earlier [H. Zhou et al., Phys. Rev. Lett. 82, 4560 (1999)]. It is shown that pulling can transit a negatively supercoiled DNA double-helix from the right-handed B-form to a left-handed configuration which resembles DNA Z-form in some important respects. The energetics of this possible transition is calculated and the comparison with recent experimental observations are qualitatively discussed.