Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 3cl6A 3imhA 4n02A 3cl6A 100 76 89 3imhA 77 100 33 4n02A 88 30 100 FOLD SIMILARITY (Z-SCORE) 3cl6A 3imhA 4n02A 3cl6A 54.2 0 5.1 3imhA 0 61.9 0 4n02A 6 0 61.9