The predicted targets on the rRNA for H/ACA-like and C/D snoRNAs based on sequence complementarity. (A) The potential targets for H/ACA-like molecules. The name of the snoRNA and the region of complementarity on rRNAs are given. (SSU) Ribosomal RNA small subunit; (LSU5 and LSU3) ribosomal RNA large subunit, 5' and 3' half, respectively; (5.8S) 5.8S ribosomal RNA. Pseudouridines are marked by ψ. (B) The potential targets for C/D snoRNA molecules. The designation of rRNA is as described in A. The 2'-O-methylation sites are underlined and the positions on rRNA are given.