Figure 6. Schematic representation of the mature mRNA of wild type and mutant type with exon 2 and the natural AUG codon eliminated. The in-frame coding regions are indicated in black box. The 5′ untranslated regions and out-frame coding regions are in clear box. The locations of in-frame AUG codons and out-of-frame AUG codons are indicated with triangles in black and in white, respectively. The numbers in the boxes depict the exons.