Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2gv8A 3zqoB 2gv8A 100 0 3zqoB 0 100 FOLD SIMILARITY (Z-SCORE) 2gv8A 3zqoB 2gv8A 67.8 0 3zqoB 0 10.7