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Maps of hydrogen-bond frequency in the denatured state of (a) 1R69 and (b) 1NLO. (Upper triangles) Hydrogen bonds that are detected in the native state. (Lower triangles) Frequency of appearance of hydrogen bonds in the denatured state of the given protein, according to the legend displayed. (Similarly to Fig. 1, the shaded lines and the sketches over the axes indicate secondary structure elements.)
