Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 3fx7A 3he4B 5cgoA 5cgoB 3fx7A 100 2 0 0 3he4B 7 100 0 0 5cgoA 0 0 0 0 5cgoB 0 0 0 0 FOLD SIMILARITY (Z-SCORE) 3fx7A 3he4B 5cgoA 5cgoB 3fx7A 14.3 3.1 0 0 3he4B 3.6 6.5 0 0 5cgoA 0 0 0 0 5cgoB 0 0 0 0