Figure 2
From: Oligomeric protein structure networks: insights into protein-protein interactions

Interface amino acid clusters in Urate oxidase (1UOX) at (a) Imin = 6% and (b) Imin = 4%. The protein monomers and the cluster forming residues are colored differently and are shown in cartoon and van der Waal's representations respectively. This is an example of an interface with more than one patch at higher Imins that do not merge at lower Imins (1UOX) as identified from the interface clusters at different Imins.