(A) Simulation box used for equilibration of the peptides in the DPPC bilayer (DPPC lipids, green; peptide, cyan; tryptophan residues, purple; cystein residues, yellow; water, red and white). (B) Density profile of the simulated membrane system: the total peptide density is shown in cyan, and the other curves represent various lipid moieties as indicated. (C) RMSD of the position of the peptide atoms during the 20 ns MD simulation with respect to their initial position.