Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1v9cA 1v9cB 2xigC 1v9cA 100 99 14 1v9cB 99 100 31 2xigC 66 0 100 FOLD SIMILARITY (Z-SCORE) 1v9cA 1v9cB 2xigC 1v9cA 41.1 37 0 1v9cB 37 42.1 0 2xigC 0 0 26