Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 3gasA 5gvvA 5gvvF 3gasA 100 70 67 5gvvA 52 100 99 5gvvF 49 99 100 FOLD SIMILARITY (Z-SCORE) 3gasA 5gvvA 5gvvF 3gasA 36.8 0 0 5gvvA 0 62.3 57.6 5gvvF 0 57.6 60.8