Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 1iayA 2felA 3piuA 1iayA 100 43 91 2felA 79 100 82 3piuA 91 32 100 FOLD SIMILARITY (Z-SCORE) 1iayA 2felA 3piuA 1iayA 70.1 0 60.7 2felA 0.1 53.4 0 3piuA 60.7 0 72.4