Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1yrtA 1yrtB 2yf4A 2yf4B 3araA 1yrtA 100 0 48 46 40 1yrtB 2 100 0 0 0 2yf4A 59 0 100 97 0 2yf4B 53 0 97 100 0 3araA 72 0 0 0 100 FOLD SIMILARITY (Z-SCORE) 1yrtA 1yrtB 2yf4A 2yf4B 3araA 1yrtA 54.6 0 2.3 1.9 0 1yrtB 0 16.9 0 0 0 2yf4A 0 0 21.2 19.5 0 2yf4B 0 0 19.5 21.2 0 3araA 0 0 0 0 26