Quignon E, Ferhadian D, Hache A, Vivet-Boudou V, I. Structural Impact of the Interaction of the Influenza A Virus Nucleoprotein with Genomic RNA Segments. Viruses. 2024 Mar 9;16(3):421
Influenza A viruses (IAVs) possess a segmented genome consisting of eight viral RNAs (vRNAs) associated with multiple copies of viral nucleoprotein (NP) and a viral polymerase complex. Despite the crucial role of RNA structure in IAV replication, the impact of NP binding on vRNA structure is not well understood. In this study, we employed SHAPE chemical probing to compare the structure of NS and M vRNAs of WSN IAV in various states: before the addition of NP, in complex with NP, and after the removal of NP. Comparison of the RNA structures before the addition of NP and after its removal reveals that NP, while introducing limited changes, remodels local structures in both vRNAs and long-range interactions in the NS vRNA, suggesting a potentially biologically relevant RNA chaperone activity. In contrast, NP significantly alters the structure of vRNAs in vRNA/NP complexes, though incorporating experimental data into RNA secondary structure prediction proved challenging. Finally, our results suggest that NP not only binds single-stranded RNA but also helices with interruptions, such as bulges or small internal loops, with a preference for G-poor and C/U-rich regions.
See Also:
Latest articles in those days:
- Pathological evidence of neurotropism and oculotropism in wild black-headed gulls naturally infected with H5N1 high pathogenicity avian influenza 1 minute(s) ago
- Birth cohort effects in adults associated with influenza A(H1N1)pdm09 vaccine effectiveness 12 hours ago
- Genetic Characterization of Swine Influenza Viruses in Thailand in 2019-2025 Reveals Novel Reassortants 12 hours ago
- Outbreak dynamics of high pathogenicity avian influenza virus H5N1, clade 2.3.4.4b euBB, in black-headed gulls and common terns in Germany in 2023 13 hours ago
- [preprint]The canine respiratory epithelium is a permissive ecosystem for influenza interspecies transmission and emergence 13 hours ago
[Go Top] [Close Window]


