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Tryptophan quantum yield (ϕ) as a function of time at 10 °C after a 5 K laser-induced T-jump for 300 μM solutions of Cys-HP35(Nle24,His27,Nle29) containing 20 mM sodium acetate, 1 mM TCEP, and either (A) 2.25 M GdmCl (blue), (B) 4 M GdmCl (green), or (C) 6 M GdmCl (red). The circles are the experimental data and the lines are fits with a single exponential function.
