Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 3bj4A 3s6oA 3ullA 3ullB 3bj4A 100 0 0 0 3s6oA 0 100 34 47 3ullA 0 29 100 96 3ullB 0 53 96 100 FOLD SIMILARITY (Z-SCORE) 3bj4A 3s6oA 3ullA 3ullB 3bj4A 5.9 0 0 0 3s6oA 0 54.8 0 0 3ullA 0 0 20.9 17.2 3ullB 0 0 17.2 21.3