Global cross-over dynamics of single semiflexible polymers

Abstract

We present a mean-field dynamical theory for single semiflexible polymers which can precisely capture, without fitting parameters, recent fluorescence correlation spectroscopy results on single monomer kinetics of DNA strands in solution. Our approach works globally, covering three decades of strand length and five decades of time: it includes the complex cross-overs occurring between stiffness-dominated and flexible bending modes, along with larger-scale rotational and center-of-mass motion. The accuracy of the theory stems in part from long-range hydrodynamic coupling between the monomers, which makes a mean-field description more realistic. Its validity extends even to short, stiff fragments, where we also test the theory through Brownian hydrodynamics simulations.

6 pages, 5 figures; updated with minor changes to reflect published version

References in corpus (4)

• Dynamic Fluctuations of Semiflexible Polymers
• Dynamic Scattering from Solutions of Semiflexible Polymers
• Propagation and Relaxation of Tension in Stiff Polymers
• End-monomer dynamics in semiflexible polymers

Cited by in corpus (4)

• Active Brownian filaments with hydrodynamic interactions: conformations and dynamics
• Conformations, Transverse Fluctuations and Crossover Dynamics of a Semi-Flexible Chain in Two Dimensions
• Universal monomer dynamics of a two dimensional semi-flexible chain
• DNA-Protein Binding Rates: Bending Fluctuation and Hydrodynamic Coupling Effects