Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1pqwA 1pqwB 3cdhA 1pqwA 100 98 19 1pqwB 98 100 16 3cdhA 19 17 100 FOLD SIMILARITY (Z-SCORE) 1pqwA 1pqwB 3cdhA 1pqwA 37.5 32.4 0 1pqwB 32.4 36.9 0 3cdhA 0 0 24.4