Fig. 4

Structure profile of mRNA and pre-mRNA. a \(\mu _{p_{\text {stem}}}(i)\) around start codons (Left), exon junctions (Center), and stop codons (Right). Profiles of the first, second, and third exon junctions are drawn in black, green, and red, respectively. b Log relative probability around donor sites (Left) and acceptor sites (Right) for Bulge (B), Exterior (E), Hairpin (H), Multi (M), and Internal (I) loops, which are represented by orange, light green, purple, dark green, and blue lines, respectively. Each position shows \(\log (\mu _{p_{\delta }}(i) / \overline {\mu }{}_{p_{\delta }}) \) for the loop type δ. A 0 position indicates the starts of introns for donor sites, and the starts of exons for acceptor sites