Figure 1

Histogram showing the distribution of the number of partner residues in contact with a particular amino acid residue in proteins. The bars corresponding to the side chain (sc) and the whole residue (w) appear grouped towards the left and the right sides of the plot, respectively, and the average value (with standard deviation) of partner-residue in each case is shown. The residues are arranged according to their volume [33]. Only ten residues are shown.