Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 4kbxA 4zz7A 4kbxA 100 88 4zz7A 88 100 FOLD SIMILARITY (Z-SCORE) 4kbxA 4zz7A 4kbxA 69.5 0.5 4zz7A 0.5 72.5