Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1dkgA 1dkgB 6aozA 6aozB 1dkgA 100 97 0 0 1dkgB 93 100 0 0 6aozA 10 7 100 4 6aozB 12 3 4 100 FOLD SIMILARITY (Z-SCORE) 1dkgA 1dkgB 6aozA 6aozB 1dkgA 21.5 16.5 0 0 1dkgB 16.4 21.3 0 0 6aozA 4.1 4 8 6.6 6aozB 4.3 4.2 6.6 7.9