Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2x3hA 3k6tA 2x3hA 100 0 3k6tA 0 100 FOLD SIMILARITY (Z-SCORE) 2x3hA 3k6tA 2x3hA 68.5 0 3k6tA 0 11.7