Figure 3

Fluorescence titration of selected peptides with hemin in the presence and absence of model membranes. Titrations were performed with peptides containing a Trp residue, melittin (a) and CM15 (b). Spectra were collected at 2 µM peptide with or without 635 µM lipid, using consecutive addition of hemin in PBS. Data are read at the emission maximum, corrected for corresponding values of the blank titration, and normalized to values measured in the absence of hemin.