Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1bm9A 4frfA 5xp0A 5xp0B 1bm9A 100 43 0 0 4frfA 43 100 56 13 5xp0A 0 56 100 96 5xp0B 0 15 96 100 FOLD SIMILARITY (Z-SCORE) 1bm9A 4frfA 5xp0A 5xp0B 1bm9A 22.4 0 0 0 4frfA 0 39.7 0 0 5xp0A 0 0 30 27.3 5xp0B 0 0 27.3 30.8