Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2axtd 2axte 4il6D 4il6E 2axtd 100 0 99 0 2axte 15 100 2 96 4il6D 99 0 100 0 4il6E 4 96 17 100 FOLD SIMILARITY (Z-SCORE) 2axtd 2axte 4il6D 4il6E 2axtd 43.4 0 40.3 0 2axte 0 10.9 0.1 9 4il6D 40.3 0 43.8 0 4il6E 0 9 0 10.9