Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 1qpoA 5d50E 5d50G 1qpoA 100 0 0 5d50E 9 100 96 5d50G 10 96 100 FOLD SIMILARITY (Z-SCORE) 1qpoA 5d50E 5d50G 1qpoA 44.7 0 0 5d50E 0.7 12.3 10.4 5d50G 0 10.4 12.4