[i] ^aThe benchmarks are denoted as pfam-max50, gene3d-nomax50, and so on to indicate the domain database used for defining the homologs, with the number of pairs (total/homologs) in each benchmark listed in the second column. The benchmarks include full-length proteins. Each particular benchmark's definition of homology is located in the third column, and example protein domain architectures are depicted in the last column.