A unified route for flavivirus structures uncovers essential pocket factors conserved across pathogenic viruses

Joshua M. Hardy, Natalee D. Newton, Naphak Modhiran, Connor A. P. Scott, Hariprasad Venugopal, Laura J. Vet, Paul R. Young, Roy A. Hall, Jody Hobson-Peters, Fasséli Coulibaly () and Daniel Watterson ()
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Joshua M. Hardy: Monash University
Natalee D. Newton: The University of Queensland
Naphak Modhiran: The University of Queensland
Connor A. P. Scott: The University of Queensland
Hariprasad Venugopal: Monash University
Laura J. Vet: The University of Queensland
Paul R. Young: The University of Queensland
Roy A. Hall: The University of Queensland
Jody Hobson-Peters: The University of Queensland
Fasséli Coulibaly: Monash University
Daniel Watterson: The University of Queensland

Nature Communications, 2021, vol. 12, issue 1, 1-13

Abstract: Abstract The epidemic emergence of relatively rare and geographically isolated flaviviruses adds to the ongoing disease burden of viruses such as dengue. Structural analysis is key to understand and combat these pathogens. Here, we present a chimeric platform based on an insect-specific flavivirus for the safe and rapid structural analysis of pathogenic viruses. We use this approach to resolve the architecture of two neurotropic viruses and a structure of dengue virus at 2.5 Å, the highest resolution for an enveloped virion. These reconstructions allow improved modelling of the stem region of the envelope protein, revealing two lipid-like ligands within highly conserved pockets. We show that these sites are essential for viral growth and important for viral maturation. These findings define a hallmark of flavivirus virions and a potential target for broad-spectrum antivirals and vaccine design. We anticipate the chimeric platform to be widely applicable for investigating flavivirus biology.

Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-22773-1

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DOI: 10.1038/s41467-021-22773-1

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