Table 3. Hydrogen-bond analyses for neutron-diffraction data for 26 proteins.

Total H-Bond Summary	Total H-Bond Summary By Percentage
Total i to i+4 bonds: 1329	Total i to i+4 bonds: 36.3%
Total i to i+3 bonds: 382	Total i to i+3 bonds: 10.4%
Total H-Bonds in Helices = 1711
Total β-Sheet bonds: 1043	Total β -Sheet bonds: 28.5%
Total # of bonds at bends: 431	Total # of bonds at bends: 11.8%
Total # of bonds at turns: 26	Total # of bonds at turns: 0.7%
Total # of bonds at coils: 302	Total # of bonds at coils: 8.3%
Total Disallowed bonds: 146	Total Disallowed bonds: 4.0%
Summary—3659 H-bonds detected = 100%
Bifurcated H-bonds: 317	% Bifurcated H-Bonds in Helices = 317/1711 = 18.5%