Fig. 3.

Comparison of the measured and expected CCR rates ${\Gamma }_{{\text{H}}_i^{\text{N}}{\text{H}}_{i-1}^{\alpha },C{{}^{\prime }}_{i-1}}$ of Ubiquitin, disregarding glycine residues. Measured rates are plotted as black dots against their reported average angle $\psi$ (PDB code 1d3z). The expected average rate with tensor components xx, yy, zz = 249.4, 191.1, 87.9ppm, ${\tau }_c$ = 4.1 ns and $S^2$ = 0.84, is represented by the black line. Expected variations are depicted in grey, with a lower limit of xx, yy, zz = 243.3, 211.7, 87.4ppm and $S^2$ = 0.70 and an upper limit of xx, yy, zz = 255.5, 172.9, 93.3ppm and $S^2$ = 0.91. Horizontal error bars indicate the reported range of angles, vertical error bars are estimated from spectral noise