Figure 4
2|Fo| − |Fc| neutron Fourier map around two Lys66. White, yellow, blue, red and green spheres indicate H and D, C, N, O and D, respectively, in the main chain. Carbonyl O atoms in the main chain interact by indirect hydrogen bonds (dashed purple line) mediated by a D2O molecule. It is located at the centre of this figure on the twofold axis. |