FIGURE 9.
The predicted structural changes associated with the melting curve of the 89-nt Δ8 UTR at 1 M NaCl. At room temperature, the native structure contains a native pseudoknot structure P1pk. Transition a is associated with the unfolding of the native pseudoknot. Transition b is associated with unfolding of the misfolded hairpin structure P3* in loop L1. At high temperature, the transition c corresponds to partial unfolding of the P0b stem, and transition d is associated with unfolding of the P2 stem and the rest P0b stem.