Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2r2vB 2r2vD 4f6tB 2r2vB 100 6 6 2r2vD 6 100 0 4f6tB 0 0 100 FOLD SIMILARITY (Z-SCORE) 2r2vB 2r2vD 4f6tB 2r2vB 5.4 4.5 0 2r2vD 4.5 5.4 0 4f6tB 0 0 46.5