Figure 8
The heterodimeric building blocks assemble into higher oligomeric structures. The ratios of buried and surface-exposed areas have been calculated and are plotted for all space groups and crystal packings (Krissinel & Henrick, 2007). Values for the dimer correspond to the assembled heterodimeric αβ chain. The hexamer comprises an assembly of three heterodimers and the dodecamer is the association of two of these six-membered rings. |