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

A unified route for flavivirus structures uncovers essential pocket factors conserved across pathogenic viruses.
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DOI:
10.1038/s41467-021-22773-1
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发表时间:
2021-06-01
影响因子:
16.6
通讯作者:
Watterson D
Watterson D
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Hardy JM;Newton ND;Modhiran N;Scott CAP;Venugopal H;Vet LJ;Young PR;Hall RA;Hobson-Peters J;Coulibaly F;Watterson D

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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. Understanding virus assembly could identify potential drug targets. Here the authors use a safe and efficient method to solve pathogenic flavivirus structures, revealing two lipid-like ligands within highly conserved pockets of the stem region of envelope protein that are important for virus maturation.
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