The amino acid contact preferences in terms of the extent of water exposure for (a) homo-dimer and (b) hetero-dimer interfaces. PE: partially exposed (40% > ASA >= 15% of a residue's nominal maximum area), FE: fully exposed (ASA >= 40% of a residue's nominal maximum area). The preferences were calculated with respect to the distribution of interface residues.
Chung et al. BMC Bioinformatics 2007 8:223 doi:10.1186/1471-2105-8-223