Percentage frequencies and propensities of amino acid residues at protein interfaces of PP complexes from the ABC dataset.

(A) Percentage frequencies of amino acid residues at protein interfaces. (B) Propensities of amino acid residues at protein interfaces. PP, protein-protein; ABC, ABC dataset; homo, homodimeric PP interface; hetero, heterodimeric PP interfaces; P1, protein interface of the first protein (Pi1); P2, protein interface of the second protein (Pi2).