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. Author manuscript; available in PMC: 2010 Sep 8.
Published in final edited form as: J Am Chem Soc. 2009 Jun 10;131(22):7609–7617. doi: 10.1021/ja8093247

Figure 6. Circular dichroism spectroscopy of D-amino acid substituted peptides.

Figure 6

Change in secondary structure content of D-leucine substituted peptides. Circular dichroism spectra of the single D-amino acid substituted peptides at 50 μM concentration in phosphate buffer, pH 7.0. Spectra were taken before and after the addition of 2.5 mM phospholipid vesicles composed of 90% POPC and 10% POPG. The CD spectra of the same all L-peptide in phosphate buffer with 2.5 mM phospholipid vesicles are also shown for comparison. The ellipticity values are given as molar, or mean residue, ellipticities.