Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1p9hA 3i4fA 3i4fD 3pr7A 4usxA 1p9hA 100 46 80 68 100 3i4fA 47 100 99 77 5 3i4fD 62 99 100 64 10 3pr7A 67 77 89 100 100 4usxA 47 16 13 100 100 FOLD SIMILARITY (Z-SCORE) 1p9hA 3i4fA 3i4fD 3pr7A 4usxA 1p9hA 30.5 0 0.4 14.7 5 3i4fA 0 46.5 42.9 0 0 3i4fD 0 42.9 46.4 0.3 0 3pr7A 14.5 0 0.1 40.3 4.5 4usxA 3.8 0 0 2.2 21.1