Figure 2

Characterization of the CLCN5 5′UTR variants 6 and 7 by RACE PCR and sequencing. + 1, which is located at intron 1a, indicates the putative mRNA variant 7 transcriptional start site that is the same of alternative variant 4. Exon c of 287 bp after 5’ alternative splicing originates two different mRNAs containing an exon c.1 of 102 bp (variant 6) and exon c of 287 bp (variant 7). Coloured boxes represent exons and open boxes represent introns.