Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 3v0aA 3v0aC 4uw7A 4uw7C 3v0aA 100 21 78 66 3v0aC 37 100 42 42 4uw7A 75 0 100 99 4uw7C 64 0 99 100 FOLD SIMILARITY (Z-SCORE) 3v0aA 3v0aC 4uw7A 4uw7C 3v0aA 72.6 0.1 0 0 3v0aC 0.3 28.1 0 0 4uw7A 1.8 0 30.7 29.8 4uw7C 0 0 29.8 30.7