Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2ivfB 2ivfC 5mkkA 5mkkB 2ivfB 100 51 70 59 2ivfC 55 100 43 91 5mkkA 67 44 100 92 5mkkB 55 0 92 100 FOLD SIMILARITY (Z-SCORE) 2ivfB 2ivfC 5mkkA 5mkkB 2ivfB 57.1 0 0 0 2ivfC 0 43 0 0 5mkkA 0 0 45.8 29.1 5mkkB 0 0 29.1 46