Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 4jvyA 4nocA 4nocB 5l3xA 5l3xB 4jvyA 100 78 69 0 5 4nocA 80 100 98 0 23 4nocB 23 96 100 38 24 5l3xA 8 0 27 100 49 5l3xB 36 22 17 51 100 FOLD SIMILARITY (Z-SCORE) 4jvyA 4nocA 4nocB 5l3xA 5l3xB 4jvyA 29.1 0 0 0 1.7 4nocA 0 27.1 21.3 0 0 4nocB 0 21.3 26.8 0 0 5l3xA 2.5 0 0 25.1 1.9 5l3xB 2.4 0 0 1.9 58.2