Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 4qqhA 5g5oD 5g5oE 4qqhA 100 13 18 5g5oD 26 100 99 5g5oE 12 99 100 FOLD SIMILARITY (Z-SCORE) 4qqhA 5g5oD 5g5oE 4qqhA 29.8 0 0 5g5oD 0 63.2 59.8 5g5oE 0 59.8 64.8