Fig. 1.
The 3J(Hα,HN) coupling constant (in Hertz) measured for GGXGG peptides (29) in 6 M GdmCl plotted against pH 4.9 dipeptide values (R = 0.97). See text for why four polar residues (Asn, Asp, Thr, and Tyr; open circles) are outliers.
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