Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2jk1A 3basA 3basB 3ku3B 4nkjA 2jk1A 100 0 0 50 0 3basA 0 100 18 0 12 3basB 7 18 100 8 13 3ku3B 48 10 0 100 6 4nkjA 57 25 21 58 100 FOLD SIMILARITY (Z-SCORE) 2jk1A 3basA 3basB 3ku3B 4nkjA 2jk1A 28.8 0 0 0 0 3basA 0.9 8.2 6.5 1.9 4.3 3basB 0.8 6.5 8.6 2 3.6 3ku3B 0 2.9 0 23.9 1.6 4nkjA 0 4.4 4.1 1 16.7