Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 3c4nA 4kbxA 3c4nA 100 54 4kbxA 56 100 FOLD SIMILARITY (Z-SCORE) 3c4nA 4kbxA 3c4nA 63.3 0 4kbxA 0 69.5