Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2c5qA 5ycqA 2c5qA 100 0 5ycqA 30 100 FOLD SIMILARITY (Z-SCORE) 2c5qA 5ycqA 2c5qA 42.2 0 5ycqA 0 19.5