Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1vdrA 4a25A 5x6vC 5x6vE 1vdrA 100 0 37 0 4a25A 0 100 0 0 5x6vC 46 0 100 0 5x6vE 0 52 0 100 FOLD SIMILARITY (Z-SCORE) 1vdrA 4a25A 5x6vC 5x6vE 1vdrA 32.9 0 0 0 4a25A 0 31.2 0 0 5x6vC 0 0 21.1 0 5x6vE 0 0 0 6.9