CD spectra of [C(KAAAA)10KC]n peptide in 50 mM Tris buffer at pH 7.4 (red), with an additional 400 mM NaCl (green), 50% TFE (brown), and 6 M GdmCl (blue), respectively. Ordinate represents molar residue ellipticity, [θ]λ, in units of [degree·cm2/decimol], as a function of wavelength.