Figure 6.

Putative stem-loop alignments of the R1-like (red) and R2-like (blue) sequences from the cholinergic loci of four representative species from three animal phyla. (Alignments for three additional species/phyla are shown in Figure S3.) The fractional pairing of the stem is given below each stem; the length of the putative loop is shown above each stem. Presumed splice acceptor sites at the 5′ end of the first VAChT coding exons are indicated with arrows.