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Cited by 320

The DOI matches its Crossref record; 37 of the 37 references it cites were found in a registry or an index.

Poliovirus proteinase 2A induces cleavage of eucaryotic initiation factor 4F polypeptide p220

Open access
Kräusslich, H G, Nicklin, M J, Toyoda, H, Etchison, D, Wimmer, E·1987·Journal of Virology

Abstract

Poliovirus infection of HeLa cells induces rapid shutoff of host protein synthesis, whereas translation of poliovirus RNA is not inhibited. It is presumed that shutoff is the result of proteolytic cleavage of component p220 of eucaryotic initiation factor 4F. To study whether poliovirus proteinase 2A is involved in this cleavage, we translated synthetic RNAs that contained the coding region for poliovirus-specific polypeptides P1 and 2A in vitro and assayed for cleavage of p220. We report here that cleavage of p220 occurred in all cases when active proteinase 2A was translated and that disruption of the coding sequence of 2A by linker insertion or deletion prevented processing of p220 in vitro. Activity of 2A was determined by its ability to cleave at the P1-P2 site of a segment of the poliovirus polyprotein. We also constructed a plasmid in which the 3'-most 500 nucleotides of the nontranslated region of encephalomyocarditis virus were linked to the coding sequence for poliovirus polypeptide 2A. Translation of the RNA transcript of this clone was very efficient and yielded a fusion protein that included 2A; this polypeptide also induced cleavage of p220. In vitro translation in the presence of antibodies against 2A specifically inhibited processing of p220, whereas incubation of in vitro translation products with antibodies against 2A after translation was completed did not prevent proteolysis of p220.

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Crossref · 10.1128/jvi.61.9.2711-2718.1987

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Metadata

Authors
Kräusslich, H. G., Nicklin, M. J., Toyoda, H., Etchison, D., & Wimmer, E.
Venue
Journal of Virology
Published
1987-09
Volume
61
Issue
9
Pages
2711-2718
ISSN
  • 0022-538X (ISSN-L)
  • 1098-5514
OpenAlex
W2122966339
Cited by
320
References
37
FWCI
13.20
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Poliovirus proteinase 2A induces cleavage of eucaryotic initiation factor 4F polypeptide p220. https://app.cochat.ai/papers/10.1128/jvi.61.9.2711-2718.1987
The paper
Kräusslich, H. G., Nicklin, M. J., Toyoda, H., Etchison, D., & Wimmer, E. (1987). Poliovirus proteinase 2A induces cleavage of eucaryotic initiation factor 4F polypeptide p220. Journal of Virology. https://doi.org/10.1128/jvi.61.9.2711-2718.1987

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Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.