Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1tzjA 3zfwA 3zfwX 1tzjA 100 0 0 3zfwA 79 100 0 3zfwX 0 0 0 FOLD SIMILARITY (Z-SCORE) 1tzjA 3zfwA 3zfwX 1tzjA 62.8 0 0 3zfwA 0.2 35.6 0 3zfwX 0 0 0