Selection of the alignment between class A and classes B, C, and F.

This table shows the selection process for assigning BW.50 residues to non class A proteins. Shifting BW.50 residue on each helix renumbers the relative BW numbers, effectively changing the labels of contacts observed in these proteins. Subsequently, the number of common contacts each structure shares with the class A structures changes for different BW residue assignments. The second rightmost column shows the cumulative number of contact occurrences among the 24 class A structures (including active conformations). The BW assignment with the highest number of contacts is selected (except for MGLU5, see text). The selected alignment is in bold.