Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 1di6A 1y5eA 1y5eC 1di6A 100 68 66 1y5eA 68 100 98 1y5eC 66 98 100 FOLD SIMILARITY (Z-SCORE) 1di6A 1y5eA 1y5eC 1di6A 38.5 20.7 20.4 1y5eA 20.7 35.3 33.5 1y5eC 20.4 33.5 35.5