Figure 2.

Different types of exons used to assemble selenoprotein genes. A. c-exons in which no in-frame TGA codon is allowed. B. i-exons in which an in-frame TGA codon is present and codes for a Sec residue. The signals such as splice sites AG and GT, start codon and stop codons are indicated in the figure.

Jiang et al. BMC Genomics 2010 11:289   doi:10.1186/1471-2164-11-289
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