Self-Diffusion of an Entangled DNA Molecule by Reptation

by: Douglas E Smith, Thomas T Perkins, Steven Chu

Physical Review Letters, Vol. 75, No. 22. (27 November 1995), 4146.

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Abstract

Diffusion coefficients ( D ) of fluorescently labeled DNA molecules in entangled DNA solutions were measured by tracking Brownian motion. The measured lifetime of tubelike topological constraints that hinder diffusion was longer than the minimum lifetime assumed in the reptation theory. The scaling of D with polymer length and concentration was close to reptation predictions for the highest concentration and longest chain studied. These observations illustrate reptation at the microscopic level.

@article{smith95, abstract = {Diffusion coefficients ( D ) of fluorescently labeled DNA molecules in entangled DNA solutions were measured by tracking Brownian motion. The measured lifetime of tubelike topological constraints that hinder diffusion was longer than the minimum lifetime assumed in the reptation theory. The scaling of D with polymer length and concentration was close to reptation predictions for the highest concentration and longest chain studied. These observations illustrate reptation at the microscopic level.}, author = {Smith, Douglas E. and Perkins, Thomas T. and Chu, Steven }, citeulike-article-id = {808707}, doi = {http://dx.doi.org/10.1103/PhysRevLett.75.4146}, journal = {Physical Review Letters}, keywords = {diffusion, dna, entangled, self}, month = {November}, number = {22}, pages = {4146+}, posted-at = {2008-07-19 16:20:02}, priority = {2}, publisher = {American Physical Society}, title = {Self-Diffusion of an Entangled DNA Molecule by Reptation}, url = {http://dx.doi.org/10.1103/PhysRevLett.75.4146}, volume = {75}, year = {1995} }

RIS record

TY - JOUR ID - smith95 L3 - citeulike-article-id:808707 TI - Self-Diffusion of an Entangled DNA Molecule by Reptation JF - Physical Review Letters VL - 75 IS - 22 SP - 4146 PB - American Physical Society N2 - Diffusion coefficients ( D ) of fluorescently labeled DNA molecules in entangled DNA solutions were measured by tracking Brownian motion. The measured lifetime of tubelike topological constraints that hinder diffusion was longer than the minimum lifetime assumed in the reptation theory. The scaling of D with polymer length and concentration was close to reptation predictions for the highest concentration and longest chain studied. These observations illustrate reptation at the microscopic level. KW - diffusion KW - dna KW - entangled KW - self AU - Smith, Douglas AU - Perkins, Thomas AU - Chu, Steven PY - 1995/11/27/ UR - http://dx.doi.org/10.1103/PhysRevLett.75.4146 ER -

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