Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1wt6A 1wt6B 3kqgA 3kqgB 1wt6A 100 6 5 8 1wt6B 6 100 7 7 3kqgA 0 0 100 95 3kqgB 0 0 95 100 FOLD SIMILARITY (Z-SCORE) 1wt6A 1wt6B 3kqgA 3kqgB 1wt6A 7.6 6.5 0.2 0.2 1wt6B 6.1 7.7 0.5 0.6 3kqgA 0 0 31.1 28 3kqgB 0 0 28 30.7