Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1h6wA 3da0A 3da0C 1h6wA 100 13 13 3da0A 13 100 99 3da0C 13 99 100 FOLD SIMILARITY (Z-SCORE) 1h6wA 3da0A 3da0C 1h6wA 15.6 0 0 3da0A 0 25.1 23.9 3da0C 0 23.9 25.2