The nucleotide sequences of cDNA clones corresponding to the 3′ OH end of papaya mosaic virus RNA have been determined. The 3′-terminal sequence obtained was 900 nucleotides in length, excluding the poly(A) tail, and contained an open reading frame capable of giving rise to a protein of 214 amino acid residues with an of 22930. This protein was identified as the viral capsid protein. The 3′ non-coding region of PMV genome RNA was about 121 nucleotides long [excluding the poly(A) tail] and homologous to the complementary sequence of the non-coding region at the 5′ end of PMV RNA. A long open reading frame was also found in the predicted 5′ end region of the negative strand.


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