Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2q80A 3e0lA 3n45F 2q80A 100 91 78 3e0lA 0 100 58 3n45F 100 57 100 FOLD SIMILARITY (Z-SCORE) 2q80A 3e0lA 3n45F 2q80A 48.7 0 26.2 3e0lA 0 73.2 0 3n45F 16.4 0 59.1