Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2gomA 3isaA 3isaC 2gomA 100 2 2 3isaA 0 100 99 3isaC 0 99 100 FOLD SIMILARITY (Z-SCORE) 2gomA 3isaA 3isaC 2gomA 15.5 0.8 0.8 3isaA 0 46.3 43.8 3isaC 0 43.8 46.1