Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2a79B 2ahyA 2r9rB 3ldcA 4wfeA 2a79B 100 35 100 16 74 2ahyA 42 100 56 33 42 2r9rB 100 36 100 16 97 3ldcA 15 33 16 100 16 4wfeA 100 46 100 16 100 FOLD SIMILARITY (Z-SCORE) 2a79B 2ahyA 2r9rB 3ldcA 4wfeA 2a79B 26.5 10.1 20.3 7.4 0.3 2ahyA 10.1 19 0 11.9 8.4 2r9rB 20.3 10 42.4 7.6 2.6 3ldcA 9.2 11.9 9.4 19.2 9.9 4wfeA 4.2 6.7 5.1 9.9 31.7