Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 3rvyA 5hk7A 3rvyA 100 5 5hk7A 27 100 FOLD SIMILARITY (Z-SCORE) 3rvyA 5hk7A 3rvyA 27.7 3.2 5hk7A 16.3 20.6