Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 4xstE 4xstF 5d4zA 5d4zJ 4xstE 100 0 0 0 4xstF 0 0 0 0 5d4zA 0 0 0 0 5d4zJ 0 0 0 0 FOLD SIMILARITY (Z-SCORE) 4xstE 4xstF 5d4zA 5d4zJ 4xstE 47.2 0 0 0 4xstF 0 0 0 0 5d4zA 0 0 0 0 5d4zJ 0 0 0 0