Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2jaqA 2q73A 2q73D 2jaqA 100 18 0 2q73A 16 100 84 2q73D 20 84 100 FOLD SIMILARITY (Z-SCORE) 2jaqA 2q73A 2q73D 2jaqA 36.6 0.9 0 2q73A 1.2 18 11.4 2q73D 1.3 11.4 14.7