Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1rtm1 2ynzA 3u91A 1rtm1 100 25 0 2ynzA 27 100 0 3u91A 0 0 0 FOLD SIMILARITY (Z-SCORE) 1rtm1 2ynzA 3u91A 1rtm1 28.3 0.2 0 2ynzA 0 11 0 3u91A 0 0 0