Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 1nqkA 1q9uA 1nqkA 100 44 1q9uA 63 100 FOLD SIMILARITY (Z-SCORE) 1nqkA 1q9uA 1nqkA 61.2 0 1q9uA 0 26.7