FIG. 6.

Levels of modifications and their corresponding guiding snoRNAs. The levels of modifications and the levels of the snoRNAs that guide these modifications were determined for 11 different groups representing different regions on the rRNA. The level of the snoRNA guiding the modification was determined relative to the level of U4 snRNA in each sample. Quantitations of the levels of modification and snoRNAs are given in Fig. S-8 in the supplemental material. Numbers below the gels indicate the Nm positions on the rRNA.