Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 2iidA 5z2gA 2iidA 100 98 5z2gA 98 100 FOLD SIMILARITY (Z-SCORE) 2iidA 5z2gA 2iidA 66.9 60.6 5z2gA 60.6 66.7