Figure 2 of
Yeagle, Mol Vis 2000;
Figure 2. Connectivities observed in the NOESY data for rhoviih
The numbering scheme of 1-25 is an internal system for the peptide. The bars at the top represent the i, i + 3 and i, i + 4 interactions characteristic of a-helix. Some of the N-H resonances have very similar chemical shifts and the a-N interactions are ambiguous in those cases. However, a bar was drawn if there existed a i, i + 3 or i, i + 4 interaction between other hydrogens of the indicated residues with non-ambiguous chemical shifts.