Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 3cu3A 3oc4A 3pm6A 3pm6B 5yp4A 3cu3A 100 51 28 38 78 3oc4A 48 100 57 52 76 3pm6A 21 64 100 99 90 3pm6B 41 52 99 100 43 5yp4A 89 67 85 87 100 FOLD SIMILARITY (Z-SCORE) 3cu3A 3oc4A 3pm6A 3pm6B 5yp4A 3cu3A 28.7 0 0 0 3.6 3oc4A 0 64.7 0.5 2.8 0 3pm6A 0 0 55.8 45 0.6 3pm6B 0 2.9 45 50.8 0.3 5yp4A 3.7 0.8 0 0.7 68.9