FIG. 7.
(A) RNA3, -4, and -5 body TRS regions. The sequences are aligned with respect to the translation initiation for the corresponding structural protein. (B) Putative secondary structure of the RNA3, -4, and -5 body TRS regions. The predicted structures are shown only for the regions immediately adjacent to TRSs; other regions are indicated by dots. Additional 3-bp segments at positions 10193 to 10195 and 10230 to 10232 (not shown), possible in the loop containing TRS 3.1 and TRS 3.2, provide a gain in free energy of only −1.3 kcal/mol and therefore are estimated to be rather labile. TRSs are shaded.