Glassy Dynamics of Protein Folding

Details Glassy Dynamics of Protein Folding Glassy Dynamics of Protein Folding

1999-07-26

arxiv.org/abs/cond-mat/9907397v2

Phys. Rev. E, Rapid Comm., 61, 1040 (2000)

Physics

Condensed Matter

Soft Condensed Matter

RevTeX, 4 pages, multicolumn, including 5 figures; larger computations performed, error bars improved

Scientific paper

10.1103/PhysRevE.61.R1040

A coarse grained model of a random polypeptide chain, with only discrete torsional degrees of freedom and Hookean springs connecting pairs of hydrophobic residues is shown to display stretched exponential relaxation under Metropolis dynamics at low temperatures with the exponent $\beta\simeq 1/4$, in agreement with the best experimental results. The time dependent correlation functions for fluctuations about the native state, computed in the Gaussian approximation for real proteins, have also been found to have the same functional form. Our results indicate that the energy landscape exhibits universal features over a very large range of energies and is relatively independent of the specific dynamics.

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