Figure 2

The 5′-ends of rice snoRNAs were precisely captured in degradome data. Motifs corresponding to the snoRNA C box are indicated in rice PARE reads and the schematic structure of a canonical C/D box snoRNA (A). Uncapped reads produced around the 5′-ends of rice C/D box snoRNAs (B), H/ACA box snoRNAs (C), and other ncRNAs (D) identified previously are visualized by cluster heat maps. The first nucleotide of a snoRNA or an ncRNA was set to 1. The numbers of snoRNAs and ncRNAs reported previously (indicated in parentheses) and possessing uncapped reads in the region inspected are indicated above the heat map. Loci were clustered based on the distribution of normalized read numbers across the 20-nt region by Ward’s method.