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Schematic representing +1 ribosomal frameshifting in antizymes. The antizyme mRNA is shown as an open black bar. The overlapping 0 and +1 translational reading frames, corresponding to ORF1 and ORF2, respectively, and the +1 frameshifted ORF combining ORF1 and ORF2 are indicated. The AUG initiation codon of ORF1, as well as the stop codons of ORF1 (in bold and underlined as part of the frameshift site, UCCUGAU) and ORF2 (UAA) are shown. The figure is drawn approximately to scale.
