FIGURE 3.
Two-dimensional NOESY spectrum and homology model. a, NOESY spectrum shows the resonances from the glycine amide hydrogen to the α-protons. The vertical lines mark the NH chemical shifts; the solid colored ellipses indicate the position of the intra-strand cross-peaks (red stands for D, green for O, and blue for K), and the open ellipses indicate the unambiguous inter-strand interactions. The P(CδH1)-G(NH) cross-peaks are also shown. b, homology model highlighting the atoms that that give rise to the inter-stand cross-peaks in the spectrum using colored arrows.