Non-structural protein 1 of influenza viruses inhibits rapid mRNA degradation mediated by double-stranded RNA-binding protein, staufen1

Hana Cho, Sang Ho Ahn, Kyoung Mi Kim, Yoon Ki Kim

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Although non-structural protein 1 (NS1) of influenza viruses is not essential for virulence, this protein is involved in host-virus interactions, viral replication, and translation. In particular, NS1 is known to interact with the host protein, staufen1 (Stau1). This interaction is important for efficient viral replication. However, the underlying molecular mechanism by which NS1 influences the viral life cycle remains obscure. Here, we show using immunoprecipitation and artificial tethering that the N-terminus of NS1, NS1(1-73), interacts with Stau1, blocks the Stau1-Upf1 interaction, and consequently inhibits the efficiency of Stau1-mediated mRNA decay (SMD), but not nonsense-mediatedmRNA decay (NMD). The regulation of SMD efficiency by NS1 may contribute to building a more favorable cellular environment for viral replication. Structured summary of protein interactions STAU1-55 physically interacts with UPF1 by anti tag-coimmunoprecipitation (View interaction) NS1 physically interacts with STAU1-55 by anti tag-coimmunoprecipitation (View interaction).

Original languageEnglish
Pages (from-to)2118-2124
Number of pages7
JournalFEBS Letters
Volume587
Issue number14
DOIs
Publication statusPublished - 2013 Jul 11

Fingerprint

RNA-Binding Proteins
RNA Stability
Orthomyxoviridae
Viruses
Degradation
Messenger RNA
Proteins
Nonsense Mediated mRNA Decay
Life Cycle Stages
Immunoprecipitation
Virulence
Life cycle

Keywords

  • Influenza virus
  • NS1
  • Staufen1
  • Staufen1-mediated mRNA decay (SMD)

ASJC Scopus subject areas

  • Biochemistry
  • Biophysics
  • Cell Biology
  • Genetics
  • Molecular Biology
  • Structural Biology

Cite this

Non-structural protein 1 of influenza viruses inhibits rapid mRNA degradation mediated by double-stranded RNA-binding protein, staufen1. / Cho, Hana; Ahn, Sang Ho; Kim, Kyoung Mi; Kim, Yoon Ki.

In: FEBS Letters, Vol. 587, No. 14, 11.07.2013, p. 2118-2124.

Research output: Contribution to journalArticle

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