Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 4lm6A 4lm6B 5xyfA 5xyfB 4lm6A 100 0 0 0 4lm6B 0 100 0 0 5xyfA 0 70 100 0 5xyfB 0 0 0 0 FOLD SIMILARITY (Z-SCORE) 4lm6A 4lm6B 5xyfA 5xyfB 4lm6A 9.1 0 0 0 4lm6B 0 33.5 0.2 0 5xyfA 0 0.6 32.6 0 5xyfB 0 0 0 0