FIGURE 2.

Oriented CD spectra of peptides in DMPC bilayers, showing their predominant α-helical conformation and showing their realignment from a surface-bound S- to a tilted T-state induced by increasing the molar P/L. (A) PGLa: all spectra were acquired at 40°C and 98% rH, and normalized to cross the same isodichroic point at 199 nm (see Methods). (B) MSI-103 (modified from Strandberg et al. (43)): same conditions, spectra were normalized to an isodichroic point at 198 nm.