Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1df4A 3vu6A 5yb4D 5yb4F 1df4A 100 3 19 94 3vu6A 6 100 3 3 5yb4D 10 3 100 17 5yb4F 10 3 17 100 FOLD SIMILARITY (Z-SCORE) 1df4A 3vu6A 5yb4D 5yb4F 1df4A 11.4 2.9 2.9 3 3vu6A 2.8 5.9 4.8 4.7 5yb4D 2.6 4.8 5.8 4.7 5yb4F 2.7 4.7 4.7 5.6