Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 1k38A 2nx8A 3if6A 1k38A 100 49 91 2nx8A 58 100 64 3if6A 91 59 100 FOLD SIMILARITY (Z-SCORE) 1k38A 2nx8A 3if6A 1k38A 45.5 0 38.6 2nx8A 0 34.7 0 3if6A 38.6 0 43.8