Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2ou3A 5et3A 5et3B 2ou3A 100 0 0 5et3A 0 0 0 5et3B 0 0 0 FOLD SIMILARITY (Z-SCORE) 2ou3A 5et3A 5et3B 2ou3A 31.4 0 0 5et3A 0 0 0 5et3B 0 0 0