Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1izmA 2z08A 3m2pA 1izmA 100 37 27 2z08A 51 100 34 3m2pA 66 100 100 FOLD SIMILARITY (Z-SCORE) 1izmA 2z08A 3m2pA 1izmA 34.5 0 0 2z08A 0 29.7 4.2 3m2pA 0 1 50.3