Fig. 3.

Folding kinetics. (Left) The cumulative distribution of unfolded state lifetimes, defined as the time before the peptide makes a transition to the folded state, are shown by symbols (see legend). The solid lines are the distributions arising from single- and double-exponential fits of the data, for starting initial conditions U-A and U-B, respectively. The dashed line is a single-exponential distribution fit to the simulations data for initial condition U-B. (Right) Typical examples of fast (red) and slow (black) folding trajectories are shown superimposed on the free energy surface.