FIG. 5.

Nucleotide sequence and predicted RNA secondary structure of the overlap region of ANV ORFs 1a and 1b. The deduced amino acid sequences encoded by ORF 1a, 1b, and 1a-1b surrounding the frameshift site are shown (17). The putative frameshift site (shifty heptanucleotide sequence) is underlined, and the termination codon of ORF 1a is boxed.