Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2pt7B 2pt7G 4uhvB 2pt7B 100 38 51 2pt7G 69 100 0 4uhvB 52 28 100 FOLD SIMILARITY (Z-SCORE) 2pt7B 2pt7G 4uhvB 2pt7B 49.5 0 1 2pt7G 0.2 26.6 0 4uhvB 1 0 56