An example of a fingerprint in the proteasome beta subunit domain.

(a) is a diagram of the given fingerprint, where the filled circles represent the interface residues, and the lines represent the contacts. Color and color shade represent residue hydrophobicity index defined by Kyte and Doolittle [54]. (b) is the real structure of (a) presented in PDB entry 3NZX. The dashed lines represent the contacts determined by Delaunay triangulation, and the highlighted lines are the contacts shown in (a).