FIGURE 6.

Time course of interaction between SR5 and bsrE RNA. A, autoradiogram of the time course experiment performed as described under “Experimental Procedures.” C, L, and T1L are as defined in the legend to Fig. 1. Loop regions L1–L4 and single-stranded regions J1 and J2 of SR5 are indicated at the right. B, graphic representation of progressive pairing between different regions of SR5 and bsrE RNA as derived from A. C, schematic representation of the binding pathway. Numbers indicate sequences of interaction.