
(A) Comparison between the terminal right regions of PSTVd and CEVd. Their 18-nt region of sequence and structural identity is boxed (solid line). The repeated ACAGG/CCUUCCU pair that includes the (underlined) AGG/CCUUC motif is presented in bold characters. (B) The designed R34 RNA. The dashed box indicates the 28-nt part that PSTVd and R34 share.










