Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1ox3A 1wt6A 4mbqA 4ug1A 5kb2A 6c9tA 1ox3A 100 7 0 6 6 0 1wt6A 3 100 0 4 3 3 4mbqA 0 0 100 0 0 10 4ug1A 2 16 4 100 6 4 5kb2A 6 19 0 3 100 0 6c9tA 0 0 13 0 0 100 FOLD SIMILARITY (Z-SCORE) 1ox3A 1wt6A 4mbqA 4ug1A 5kb2A 6c9tA 1ox3A 13 2.9 0 2.6 3 0 1wt6A 2.8 7.6 0 3.1 3.5 0 4mbqA 0 0 13.1 0 0 0.2 4ug1A 2.8 3.1 0.7 10.6 2.7 1.2 5kb2A 3.1 3.6 0 3.4 5.7 0 6c9tA 0 0 0 0 0 23.8