Zobrazeno 1 - 10
of 728
pro vyhledávání: '"plectoneme"'
Publikováno v:
Phys. Rev. E 99, 052503 (2019)
Braids composed of two interwoven polymer chains exhibit a buckling transition whose origin has been explained through the onset of plectonemic structures. Here we study, by a combination of simulation and analytics, the dynamics of plectoneme format
Externí odkaz:
http://arxiv.org/abs/1903.06430
Publikováno v:
Phys. Rev. E 97, 032412 (2018)
DNA supercoiling plays an important role on a biological point of view. One of its consequences at the supra-molecular level is the formation of DNA superhelices named plectonemes. Normally separated by a distance on the order of 10 nm, the two oppos
Externí odkaz:
http://arxiv.org/abs/1710.07509
We develop a statistical mechanical framework, based on a variational approximation, to describe closed loop plectonemes. This framework incorporates weak helix structure dependent forces into the determination of the free energy and average structur
Externí odkaz:
http://arxiv.org/abs/1609.02421
Autor:
Medalion, Shlomi, Rabin, Yitzhak
We use Monte-Carlo simulations to study the effect of variable rigidity on plectoneme formation and localization in supercoiled dsDNA. We show that the presence of soft sequences increases the number of plectoneme branches and that the edges of the b
Externí odkaz:
http://arxiv.org/abs/1501.00106
Autor:
Lee, Dominic J. O'.
Presented here, is a technical manuscript that may form the basis of later published work. In it, we develop a statistical mechanical model to describe a closed loop plectoneme, applicable for when the closed loop is sufficiently supercoiled. The mod
Externí odkaz:
http://arxiv.org/abs/1411.4844
Publikováno v:
Scientific Reports, 5, 7655 (2015)
Biological information is not only stored in the digital chemical sequence of double helical DNA, but is also encoded in the mechanical properties of the DNA strands, which can influence biochemical processes involving its readout. For example, loop
Externí odkaz:
http://arxiv.org/abs/1404.2869
We use the worm-like chain model to study supercoiling of DNA under tension and torque. The model reproduces experimental data for a broad range of forces, salt concentrations and contour lengths. We find a plane of first order phase transitions endi
Externí odkaz:
http://arxiv.org/abs/1307.5258
We use the worm-like chain model to study supercoiling of DNA under tension and torque. The model reproduces experimental data for a much broader range of forces, salt concentrations and contour lengths than previous approaches. Our theory shows, for
Externí odkaz:
http://arxiv.org/abs/1204.1324
Autor:
Wada, Hirofumi, Netz, Roland R.
Publikováno v:
EPL 87, 38001 (2009)
The torsional dynamics of a semiflexible polymer with a contour length $L$ larger than its persistence length L_p that is rotated at fixed frequency omega_0 at one end is studied by scaling arguments and hydrodynamic simulations. We find a non-equili
Externí odkaz:
http://arxiv.org/abs/0910.1501
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.