Crossref journal-article
American Society for Microbiology
Journal of Virology (235)
Abstract

ABSTRACT Phosphoprotein NSP5 is a component of replication intermediates that catalyze the synthesis of the segmented double-stranded RNA (dsRNA) rotavirus genome. To study the role of the protein in viral replication, His-tagged NSP5 was expressed in bacteria and purified by affinity chromatography. In vitro phosphorylation assays showed that NSP5 alone contains minimal autokinase activity but undergoes hyperphosphorylation when combined with the NTPase and helix-destabilizing protein NSP2. Hence, NSP2 mediates the hyperphosphorylation of NSP5 in the absence of other viral or cellular proteins. RNA-binding assays demonstrated that NSP5 has unique nonspecific RNA-binding activity, recognizing single-stranded RNA and dsRNA with similar affinities. The possible functions of the RNA-binding activities of NSP5 are to cooperate with NSP2 in the destabilization of RNA secondary structures and in the packaging of RNA and/or to prevent the interferon-induced dsRNA-dependent activation of the protein kinase PKR.

Bibliography

Vende, P., Taraporewala, Z. F., & Patton, J. T. (2002). RNA-Binding Activity of the Rotavirus Phosphoprotein NSP5 Includes Affinity for Double-Stranded RNA. Journal of Virology, 76(10), 5291–5299.

Authors 3
  1. Patrice Vende (first)
  2. Zenobia F. Taraporewala (additional)
  3. John T. Patton (additional)
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Dates
Type When
Created 23 years ago (July 27, 2002, 6:09 a.m.)
Deposited 3 years, 5 months ago (March 5, 2022, 1:53 a.m.)
Indexed 1 month, 3 weeks ago (June 29, 2025, 11:01 a.m.)
Issued 23 years, 3 months ago (May 15, 2002)
Published 23 years, 3 months ago (May 15, 2002)
Published Print 23 years, 3 months ago (May 15, 2002)
Funders 0

None

@article{Vende_2002, title={RNA-Binding Activity of the Rotavirus Phosphoprotein NSP5 Includes Affinity for Double-Stranded RNA}, volume={76}, ISSN={1098-5514}, url={http://dx.doi.org/10.1128/jvi.76.10.5291-5299.2002}, DOI={10.1128/jvi.76.10.5291-5299.2002}, number={10}, journal={Journal of Virology}, publisher={American Society for Microbiology}, author={Vende, Patrice and Taraporewala, Zenobia F. and Patton, John T.}, year={2002}, month=may, pages={5291–5299} }