FIG. 1.
Mutations to sequences in and surrounding the palindrome in SII, as shown by agarose gel electrophoresis. (a) First two lanes, wild-type (WT) RNA, nucleotides 322 to 480; next two lanes, SIIM1; next two lanes, SIIM2; next two lanes, SIIM3; next two lanes, SIIM4; next two lanes, SIIM5. (b) First two lanes, wild-type RNA, nucleotides 322 to 480; next two lanes, SIIM6; next two lanes, SIIM7. The first lane of each pair contains denatured RNA, the second lane contains native RNA. The numbers to the left of the gels indicate nucleic acid sizes (in kilobases). d, dimer; m, monomer.