Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2dg8A 2dg8D 4ydrA 5fugG 5fugH 2dg8A 100 99 48 0 34 2dg8D 99 100 2 0 13 4ydrA 48 58 100 0 0 5fugG 21 17 0 100 24 5fugH 17 50 37 16 100 FOLD SIMILARITY (Z-SCORE) 2dg8A 2dg8D 4ydrA 5fugG 5fugH 2dg8A 31.8 29.1 0 0 1.5 2dg8D 29.1 31.7 0 0 1.3 4ydrA 0.9 0 55.2 0 0 5fugG 1.3 1.2 0 15.7 5.7 5fugH 0 0.2 0 5.7 17.1