Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 3s4kA 4gahA 4gahB 4lowA 4lowB 3s4kA 100 47 48 17 17 4gahA 47 100 90 14 21 4gahB 47 90 100 37 6 4lowA 20 12 11 100 96 4lowB 17 0 0 96 100 FOLD SIMILARITY (Z-SCORE) 3s4kA 4gahA 4gahB 4lowA 4lowB 3s4kA 27.6 14.5 13.8 0 0 4gahA 14.5 35.1 32.2 0 0 4gahB 14.1 32.2 36.5 0 0 4lowA 0 0 0 20.5 15.6 4lowB 0 0 0 15.6 18.9