Mean first passage time analysis reveals rate-limiting steps, parallel pathways and dead ends in a simple model of protein folding
M. A. Micheelsen, C. Rischel, J. Ferkinghoff-Borg, R. Guerois, L. Serrano
Abstract
We have analyzed dynamics on the complex free energy landscape of protein folding in the FOLD-X model, by calculating for each state of the system the mean first passage time to the folded state. The resulting kinetic map of the folding process shows that it proceeds in jumps between well-defined, local free energy minima. Closer analysis of the different local minima allows us to reveal secondary, parallel pathways as well as dead ends.
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