Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1otgB 5dynA 5dynB 1otgB 100 3 100 5dynA 0 100 21 5dynB 24 21 100 FOLD SIMILARITY (Z-SCORE) 1otgB 5dynA 5dynB 1otgB 24.4 1.5 0.1 5dynA 0 24.6 0.2 5dynB 0 0.2 45.2