The residue contact preferences in terms of secondary structure properties for (a) homo-dimer and (b) hetero-dimer interfaces. H: alpha helix, S: beta strand, C: others, including coil regions. 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