Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 3omiA 3omiB 5iy5A 5iy5B 3omiA 100 46 92 18 3omiB 0 100 0 74 5iy5A 91 42 100 40 5iy5B 0 74 0 100 FOLD SIMILARITY (Z-SCORE) 3omiA 3omiB 5iy5A 5iy5B 3omiA 69.7 3.2 58 0 3omiB 0 38.4 0 25.9 5iy5A 58 1.3 68.2 1.4 5iy5B 0 25.9 0 33.2