Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 3pr7A 4begA 4begB 3pr7A 100 46 61 4begA 100 100 98 4begB 100 98 100 FOLD SIMILARITY (Z-SCORE) 3pr7A 4begA 4begB 3pr7A 40.3 0 0 4begA 0 38.1 35.3 4begB 0 35.3 37.8