Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2qihA 3mkoA 4c47A 2qihA 100 11 18 3mkoA 0 100 13 4c47A 0 0 100 FOLD SIMILARITY (Z-SCORE) 2qihA 3mkoA 4c47A 2qihA 9.3 2 4.2 3mkoA 0 14.3 2.3 4c47A 0 0 26.9