Protein-protein interolog score. Protein-protein interolog score, where A-a and B-b are orthologs between the two organisms. The orthologous protein pair (A
) can be inferred to interact in a target organism if the protein pair (a, b) interacts in a reference organism. Gab is the sub-graph of proteins that interact with both a and b; Cab is the quasi-clique with maximal conservation score in Gab, and IPAi and IPBj are the InParanoid scores of paralogs i and j of orthologs A and B, respectively, in the target organism.