Relative location of splicing motifs and length of exons and introns. Green filled boxes represent exons, with the first, last, and internal exons displayed. Thinner sections of the first and last exons represent the untranslated regions (UTRs), demarcated by the start codon (light green) and stop codon (red). Black lines with arrows represent the introns and the direction (5 to 3). Colored boxes correspond to the locations of the motifs shown in (A), with the flanking numbers demarcating their start and end locations relative to the nearest exon. The minimum intron and exon lengths are annotated below.
