2024
DOI: 10.1002/advs.202309477
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Phosphorylation of S‐S‐S Motif in Nuclear Export Protein (NEP) Plays a Critical Role in Viral Ribonucleoprotein (vRNP) Nuclear Export of Influenza A and B Viruses

Xiaokun Liu,
Cha Yang,
Xian Lin
et al.

Abstract: The phosphorylation of three highly conserved serine residues S23, S24, and S25 (S‐S‐S motif) has been previously identified in NEP of influenza virus. However, it remains obscure whether and how this motif regulates the vRNPs nuclear export. Here the influenza A H5N6 viruses harboring NEP S23C, S24L, or S25L is generated, allowing to impair the phosphorylation on these sites without mutating viral NS1 protein. These mutations significantly inhibited vRNPs nuclear export are founded, decreased viral infectivit… Show more

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