Fig. 2.

Predicted RNA secondary structure of the IRES of the turkey picornavirus (turkey/M176/2011/HUN; GenBank accession no. JQ691613). The complete structure of the 5′ UTR, including domains A–L and the type II IRES, has been annotated as proposed previously (inset). The central 5′ IRES domains of turkey picornavirus are labelled from H to L to maintain the continuity of the current nomenclature. The positions of conserved type II IRES motifs and the predicted polyprotein AUG start codon are indicated by shaded boxes. Nucleotide sequence similarity in the apical region of domain J between EMCV (genus Cardiovirus) and turkey picornavirus is boxed and indicated by a black arrow). Analogous to EMCV, possible specific binding between domain J and PTB is indicated by a white arrow.