Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1v3uA 1v3uB 1ydgA 3qgzA 4njyA 1v3uA 100 98 57 50 22 1v3uB 98 100 59 52 22 1ydgA 83 59 100 0 33 3qgzA 38 34 53 100 65 4njyA 21 19 29 65 100 FOLD SIMILARITY (Z-SCORE) 1v3uA 1v3uB 1ydgA 3qgzA 4njyA 1v3uA 54.4 49.1 3.5 0 0 1v3uB 49.1 57.6 3.6 0 0 1ydgA 0 3.7 41.8 0 0 3qgzA 0 0 0 26 18.6 4njyA 0 0 0.3 18.6 22.8