Chain length scaling of protein folding time

Details Chain length scaling of protein folding time Chain length scaling of protein folding time

1996-06-24

arxiv.org/abs/cond-mat/9606180v1

Physics

Condensed Matter

Scientific paper

10.1103/PhysRevLett.77.5433

Folding of protein-like heteropolymers into unique 3D structures is investigated using Monte Carlo simulations on a cubic lattice. We found that folding time of chains of length $N$ scales as $N^\lambda$ at temperature of fastest folding. For chains with random sequences of monomers $\lambda \approx 6$, and for chains with sequences designed to provide a pronounced minimum of energy to their ground state conformation $\lambda \approx 4$. Folding at low temperatures exhibits an Arrhenius-like behavior with the energy barrier $E_b \approx \phi |E_n|$, where $E_n$ is the energy of the native conformation. $\phi \approx 0.18$ both for random and designed sequences.

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