Figure 2 - full size

Figure 2.
Figure 2. Ramachandran map illustrating the aggregate effect of the four dihedral function for C[ ]-C[ ]-C-N, C[ ]-C[ ]-C-O, C-N-C[ ], and C-N-C[ ]-C on the energy of the backbone conformation. Contours at 0.4 kcal mol^-1; intervals with darker shading representing higher energy.