Fig. 5. Electron transfer of four stranded and six stranded β-sheet peptides with cyt c. (A) Absorption spectra of heme alone (black); peptide 7-heme: oxidized (blue), reduced (orange); cyt c: oxidized (green), reduced (red); and 2 : 1 equivalent mixture of reduced peptide 7-heme and oxidized cyt c (purple). (B) Absorption spectra of heme alone (black); peptide 8-heme: oxidized (green), reduced (orange); cyt c: oxidized (blue), reduced (red); and 2 : 1 equivalent mixture of reduced peptide 8-heme and oxidized cyt c (purple). (C) Absorbance monitored at 550 nm versus time for reduced peptide 7-heme/cyt c oxidized (blue) and reduced peptide 8-heme/cyt c oxidized (red). The peptide/heme concentration was 24 μM and cytochrome c concentration was 12 μM.
