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Description of Secondary structure backbone proton-proton NOE intensities and secondary structure H-alpha to NH coupling constants

The numbers at the bottom represent the amino acid residues in the secondary structure elements and the values of 3JHN alpha. Short 1H-1H distances are indicated by lines linking the residues that contain the connected hydrogen atoms; the thickness of the lines is proportional to r-6 and thus represents the NOESY cross-peak intensities (from Wagner et al., 1986).