Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 3u9lA 5j7mA 3u9lA 100 11 5j7mA 0 100 FOLD SIMILARITY (Z-SCORE) 3u9lA 5j7mA 3u9lA 49.2 0 5j7mA 0 25.1