Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 3vh7A 3vh7C 5y14A 3vh7A 100 6 5 3vh7C 6 100 5 5y14A 5 5 100 FOLD SIMILARITY (Z-SCORE) 3vh7A 3vh7C 5y14A 3vh7A 7 6 4.7 3vh7C 6 6.9 4.9 5y14A 4.8 4.9 6.4