Figure 2
From: Genome-wide analysis of alternative splicing of pre-mRNA under salt stress in Arabidopsis
Features of alternative splicing (AS) in the Arabidopsis genome. (A) Annotation of AS events based on all the confident junctions. The AS events include cassette exons, alternative 5'SSs, alternative 3'SSs, mutually exclusive exons, coordinate cassette exons, alternative first exons and alternative last exons. (B) The distribution of read coverage of the retained introns and the corresponding flanking exons. (C) The nucleotide sequences around the alternative 5'SSs and 3’SSs are shown by Weblogo. The results indicate that these alternative 5'SSs and 3'SSs were still associated with GU and AG dinucleotides. (D) Distribution of activated alternative 5’SSs and 3’SSs around the dominant ones. These alternative 5'SSs/3’SSs are enriched in the downstream or upstream 4 bp region of the dominant 5'SSs/3’SSs (denoted as position 0 on the x-axis). 5'SS, alternative 5' splice site; 3'SS, alternative 3' splice site.