Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 3qr7A 3vtoA 3vtoC 3qr7A 100 28 35 3vtoA 37 100 90 3vtoC 37 90 100 FOLD SIMILARITY (Z-SCORE) 3qr7A 3vtoA 3vtoC 3qr7A 13 5.6 5.6 3vtoA 2.5 12.2 11 3vtoC 4.1 11 13.4