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arXiv · 1108.4553

Monomer dynamics of a wormlike chain

Jakob Tómas Bullerjahn·Sebastian Sturm·Lars Wolff·Klaus Kroy
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Abstract

We derive the stochastic equations of motion for a tracer that is tightly attached to a semiflexible polymer and confined or agitated by an externally controlled potential. The generalised Langevin equation, the power spectrum, and the mean-square displacement for the tracer dynamics are explicitly constructed from the microscopic equations of motion for a weakly bending wormlike chain by a systematic coarse-graining procedure. Our accurate analytical expressions should provide a convenient starting point for further theoretical developments and for the analysis of various single-molecule experiments and of protein shape fluctuations.

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Jakob Tómas Bullerjahn, Sebastian Sturm, Lars Wolff, Klaus Kroy. 2011-09-20. Monomer dynamics of a wormlike chain. https://doi.org/10.1209/0295-5075%2F96%2F48005

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