Fig. 3.

a) Schematic of the Trp-Cys contact quenching measurement. (b–e) Observed tryptophan triplet lifetimes at various viscosities and temperatures. b) Full length CWPAPf39 peptide at pH 7. c) Full length CWPAPf39 peptide at pH 3.5. d) CWPAPf39Δ8 peptide at pH 7. e) CWPAPf39Δ8 peptide at pH 3.5. In the top panels, the data were globally fit to the temperature-dependent model described in the text. In the bottom panels, the data at all temperatures were fit to a single line.