Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 3gdcA 3gdcC 4e9xA 3gdcA 100 99 78 3gdcC 99 100 78 4e9xA 78 100 100 FOLD SIMILARITY (Z-SCORE) 3gdcA 3gdcC 4e9xA 3gdcA 53.4 51 29.4 3gdcC 51 53.1 29.4 4e9xA 29.4 13.1 59.4