Biology – Quantitative Biology – Biomolecules
Scientific paper
2008-11-06
Biology
Quantitative Biology
Biomolecules
Scientific paper
10.1103/PhysRevE.79.021802
Most of the theoretical models describing the translocation of a polymer chain through a nanopore use the hypothesis that the polymer is always relaxed during the complete process. In other words, models generally assume that the characteristic relaxation time of the chain is small enough compared to the translocation time that non-equilibrium molecular conformations can be ignored. In this paper, we use Molecular Dynamics simulations to directly test this hypothesis by looking at the escape time of unbiased polymer chains starting with different initial conditions. We find that the translocation process is not quite in equilibrium for the systems studied, even though the translocation time tau is about 10 times larger than the relaxation time tau_r. Our most striking result is the observation that the last half of the chain escapes in less than ~12% of the total escape time, which implies that there is a large acceleration of the chain at the end of its escape from the channel.
Gauthier Michel G.
Slater Gary W.
No associations
LandOfFree
Non-driven polymer translocation through a nanopore: computational evidence that the escape and relaxation processes are coupled does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Non-driven polymer translocation through a nanopore: computational evidence that the escape and relaxation processes are coupled, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-driven polymer translocation through a nanopore: computational evidence that the escape and relaxation processes are coupled will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-631195