Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1zkeA 4lxrA 4lxrJ 5co4A 5co4B 5nupA 1zkeA 100 0 0 0 0 0 4lxrA 0 100 9 28 28 73 4lxrJ 0 0 100 0 0 2 5co4A 0 62 0 100 93 42 5co4B 0 69 0 93 100 34 5nupA 0 72 3 44 34 100 FOLD SIMILARITY (Z-SCORE) 1zkeA 4lxrA 4lxrJ 5co4A 5co4B 5nupA 1zkeA 15.8 0 0 0 0 0 4lxrA 0 50.5 0 0 0 0 4lxrJ 0 0 13.8 0 0 0 5co4A 0 0 0 33.2 28.2 0 5co4B 0 0 0 28.2 32.7 0 5nupA 0 0 0 0 0 55.6