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. 2002 Nov;11(11):2740–2747. doi: 10.1110/ps.0211102

Fig. 2.

Fig. 2.

(A) CD spectra of GCN4–54 (open circles) and GCN4–56 (filled circles) in 50 mM KCl and 12.5 mM potassium phosphate at pH 7.0 and 25°C. Values of [θ]222 (deg cm2 dmol−1) are −26,100 for GCN4–54 and −28,100 for GCN4–56. These values correspond to folded peptides that are 69 and 74% helical, respectively (Chen et al. 1974). (B) CD spectra of BR29ox (open squares) and BR31ox (open circles) in the absence (open symbols) and presence (filled symbols) of CRE DNA under the same conditions. Values of [θ]222 (deg cm2 dmol−1) are −6270 for BR29ox alone, −10,700 for BR31ox alone, −23,900 for BR29ox bound to CRE DNA, and −25,000 for BR31ox bound to CRE DNA. These values correspond to folded peptides that are 17, 29, 66, and 69% helical, respectively (Chen et al. 1974).