Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 3beyA 3beyC 3wziA 3beyA 100 97 0 3beyC 97 100 0 3wziA 0 0 100 FOLD SIMILARITY (Z-SCORE) 3beyA 3beyC 3wziA 3beyA 16.3 14.9 0 3beyC 14.9 16.7 0 3wziA 0 0 24.7