Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 1fwxA 3sbqA 1fwxA 100 95 3sbqA 95 100 FOLD SIMILARITY (Z-SCORE) 1fwxA 3sbqA 1fwxA 79.8 66.3 3sbqA 66.3 76.2