Figure 3.

(A) The Euglena tRNA^Arg adopts a conventional clover-leaf secondary structure. The anticodon nucleotides, UCG, are highlighted in red. Watson-Crick base-pairing interactions are depicted as dashes (-) and G/U pairings with dots (•). (B) The Euglena U5 snRNA displays conventional secondary structure features. The phylogenetically conserved and functionally essential exon-interacting nucleotides (green) of loop I (gray background) and the Sm binding site (blue) are highlighted. Nucleotide heterogeneities and an indel in the gene variants are indicated in red.