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Genomic organization of (A) Picornaviridae and (B) Dicistroviridae genomes drawn to scale. Numbering is based on the nucleotide sequence from the reference sequences, PV (V01149.1) and CrPV (NC003924). The structural genes (orange) and the non-structural genes (blue) comprise one ORF in picornaviruses but are two independently translated ORFs in dicistroviruses. Both genomes have a VPg protein at the 5′ end and a 3′ poly-A tail (An).
