Extended Data Figure 6.

Donor–acceptor cross-correlation of the segments of the fluorescence trajectories corresponding to the unfolded state²⁴. a, Black solid lines are exponential functions that best fit the data. The fitting parameters are listed in Extended Data Table 2. b, The unfolded state dynamics are slowed approximately linearly by the solvent viscosity as previously observed at high denaturant concentrations²⁴. The relaxation time at η/η₀ = 1 (aqueous solution) is too fast to be measured by this method.