Complex structure of quail lysozyme (in blue) and the light chain of an antibody (in green), as taken from PDB ID 1bql (). The residues that are defined to be in CDR 1 of the light chain according to Kabat definition () are colored in black. Residues in red are all the residues that are involved in the interaction according to Epitome. Note that not all of the residues on the antibody surface that are located on ‘Kabat’ CDR are involved in the antigenic reaction. Additionally, although 1bql antibody chains did not participate in the multiple structure alignment, i.e. the information about the location of the CDR was transferred from a homologous structure, the interaction was correctly identified.