Fig. 6.
Förster energy transfer for a peptide with N = 30. The average FRET efficiency 〈E 〉, calculated from the simulations according to Eq. 10, and plotted as function of temperature in the bulk (thin line) and under confinement in a cylinder of D = 1.4 (thick line). Insets show P(Ree) at the indicated points. At low temperatures both bulk and confined peptides are helical, whereas at high temperatures the bulk peptide is a random coil with a high 〈E 〉, but the confined peptide is relatively extended, with low 〈E 〉.