Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1uf3A 1uf3B 3ougA 3ougC 1uf3A 100 99 26 0 1uf3B 99 100 0 0 3ougA 18 44 100 99 3ougC 38 41 99 100 FOLD SIMILARITY (Z-SCORE) 1uf3A 1uf3B 3ougA 3ougC 1uf3A 47.5 44.5 0 0 1uf3B 44.5 47.4 0 0 3ougA 0 0 24.4 23.4 3ougC 0 0 23.4 24.4