Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1vraA 1vraB 2ev1A 2ev1B 3i4fA 3i4fD 1vraA 100 37 73 0 78 64 1vraB 83 100 32 32 58 53 2ev1A 74 0 100 99 81 80 2ev1B 0 44 99 100 80 79 3i4fA 78 50 0 0 100 99 3i4fD 78 50 0 0 99 100 FOLD SIMILARITY (Z-SCORE) 1vraA 1vraB 2ev1A 2ev1B 3i4fA 3i4fD 1vraA 37.7 0 0.1 0 0 0 1vraB 0 37 1 2.1 0 0 2ev1A 0.1 0 29 25.2 0 0 2ev1B 0 1.7 25.2 28.2 0 0 3i4fA 0 0.2 0 0 46.5 42.9 3i4fD 0 0 0 0 42.9 46.4