Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1qu7A 1qu7B 2r32A 1qu7A 100 94 0 1qu7B 94 100 0 2r32A 0 0 100 FOLD SIMILARITY (Z-SCORE) 1qu7A 1qu7B 2r32A 1qu7A 15.8 12.6 0 1qu7B 11.9 18.7 0 2r32A 0 0 25.5