Shaping the Arabidopsis Transcriptome through Alternative Splicing

Figure 1

Scheme of the exon-intron structure. Exons are shown as grey bars; the intron is shown as a black line. The 5′ splice site at the beginning of the intron, the branch point adenosine, the polypyrimidine tract (Y = C or U), and the 3′ splice site are indicated. The red bar denotes a binding site for a trans-acting splice factor located in the intron. This can be an intronic splicing enhancer or intronic splicing silencer. The green bar denotes a binding site for a trans-acting splice factor located in the exon. This can be an exonic splicing enhancer or exonic splicing silencer.