Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2zfcA 3n27A 3n27B 3n27C 5efvA 5h9cA 2zfcA 100 15 3 3 0 7 3n27A 20 100 89 46 7 13 3n27B 5 89 100 9 0 21 3n27C 5 46 9 100 8 9 5efvA 0 0 2 0 100 0 5h9cA 16 13 19 9 8 100 FOLD SIMILARITY (Z-SCORE) 2zfcA 3n27A 3n27B 3n27C 5efvA 5h9cA 2zfcA 6.5 3 2.5 2.8 3.5 3.4 3n27A 3.5 13.2 11.5 6.4 2.9 6.4 3n27B 3.7 11.5 13.9 8.3 0 5.7 3n27C 3.1 6.4 8.3 12.9 2 6.5 5efvA 0 0.8 0.6 0 54 0 5h9cA 4 6.3 5.6 6.5 0.5 13