Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2dtjA 2dtjB 4ewgA 2dtjA 100 99 27 2dtjB 99 100 53 4ewgA 12 40 100 FOLD SIMILARITY (Z-SCORE) 2dtjA 2dtjB 4ewgA 2dtjA 30.6 25.8 0 2dtjB 25.8 30.3 0 4ewgA 0 0 80.9