Figure 5.

Comparison of the SE RNA compaction time course at 8 mM MgCl₂ in the presence and in the absence of Mss 116. Protein-facilitated compaction was studied in the presence and in the absence of ATP. SE compaction was monitored by native gel electrophoresis (A), fraction of the unfolded precursor, compact population and lariat intron was plotted versus time (B) and fit as described in Materials and Methods to obtain compaction rate constants and amplitudes shown in Table 3.