Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2b1xA 2b1xB 3ty4A 3u2gA 5griA 6bkxC 2b1xA 100 56 80 28 80 64 2b1xB 74 100 57 66 60 67 3ty4A 82 83 100 92 82 83 3u2gA 68 66 92 100 39 36 5griA 85 38 82 36 100 81 6bkxC 49 56 83 36 81 100 FOLD SIMILARITY (Z-SCORE) 2b1xA 2b1xB 3ty4A 3u2gA 5griA 6bkxC 2b1xA 68.4 0 0 0 0 0 2b1xB 0 31.7 0 0 0 0 3ty4A 0 0 62.6 0 39.9 31.1 3u2gA 0.1 0 0 42.1 0 0 5griA 0 0 39.9 0 56.3 32 6bkxC 0 0 31.1 0 32 66.2