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Gene Review

PVYgp1  -  polyprotein

Potato virus Y

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Disease relevance of PVYgp1

  • Comparison of the PVY polyprotein sequence with that of other potyvirus polyproteins shows similarities in genome organization and a high level of identity along most of the polyprotein, except for the putative proteins flanking the helper component [1].
  • The nt sequence and the predicted aa sequence of the polyprotein of PVY-H were analysed pairwise with the only available complete sequence of PVY strain N (PVYn) and with the partial sequences of different PVY strains, as well as with other potyviruses and potyvirus-related plant viruses [2].
  • To test its proteolytic activity, the cDNA was modified so as to express the protease-polymerase-coat protein (CP) portion of PVY polyprotein in Escherichia coli [3].

High impact information on PVYgp1


Analytical, diagnostic and therapeutic context of PVYgp1

  • The result indicates that the CP gene cloned by PCR was functional and the PCR procedure was useful for producing biologically active cDNA clones from a single, long positive-sense RNA genome encoding a single, large polyprotein precursor, such as potyviruses [7].


  1. Nucleotide sequence of potato virus Y (N Strain) genomic RNA. Robaglia, C., Durand-Tardif, M., Tronchet, M., Boudazin, G., Astier-Manifacier, S., Casse-Delbart, F. J. Gen. Virol. (1989) [Pubmed]
  2. Cloning and sequencing of potato virus Y (Hungarian isolate) genomic RNA. Thole, V., Dalmay, T., Burgyán, J., Balázs, E. Gene (1993) [Pubmed]
  3. Cleavage of potato virus Y polyprotein in Escherichia coli depending on the proteolytic activity of viral protease. Hidaka, M., Yoshida, Y., Masaki, H., Uozumi, T. Biosci. Biotechnol. Biochem. (1993) [Pubmed]
  4. Genomic sequence of Wild potato mosaic virus as compared to the genomes of other potyviruses. Spetz, C., Valkonen, J.P. Arch. Virol. (2003) [Pubmed]
  5. Cloning and mapping of the potato virus Y genome and its in vitro expression. Karchi, M., Sela, I., Edelbaum, O., Ori, A., Raccah, B., Rosner, A., Stram, Y. Virus Genes (1990) [Pubmed]
  6. Cloning of the potato virus Y genes encoding the capsid protein CP and the nuclear inclusion protein NIb. Wefels, E., Sommer, H., Salamini, F., Rohde, W. Arch. Virol. (1989) [Pubmed]
  7. Polymerase chain-reaction-mediated cloning and expression of the coat protein gene of potato virus Y in Escherichia coli. Hataya, T., Sano, T., Ohshima, K., Shikata, E. Virus Genes (1990) [Pubmed]
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