FIGURE 3.

Potential base-pair interaction between the snoRNAs and their targets. (A) C/D snoRNAs and their target sites. The name of the snoRNA, the region of complementarity, and the nucleotide to be modified on rRNAs are given. (SSU) Ribosomal RNA small subunit; (LSU 5′/3′) ribosomal RNA large subunit, 5′ and 3′ half, respectively; (5.8S) 5.8S ribosomal RNA. Nm designates 2′-O-methylation. (B) H/ACA RNAs and their targets. The designation of rRNA is as described in A. The target sites are indicated by dots and the positions are given. The lengths (in nucleotides) between the interaction domain and the AGA-box are indicated in brackets.