Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2c4nA 4w7zB 2c4nA 100 0 4w7zB 4 100 FOLD SIMILARITY (Z-SCORE) 2c4nA 4w7zB 2c4nA 46.3 0 4w7zB 0 7.6