Study Maps Hantavirus Receptor Binding Structure
Researchers have revealed how the hantavirus spike binds its cell-surface receptor PCDH1, opening a path toward antiviral design.
Updated on Nov. 5, 2026 in COVID-19
Scientists reported the near-atomic structure of protocadherin-1 (PCDH1) bound to the Andes virus spike, a key step in how New World hantaviruses enter host cells. The work also identified four neutralising antibodies that block receptor binding through two distinct mechanisms.
Why it matters
No approved therapeutics currently exist for hantaviruses, so a detailed map of how the virus attaches to cells is a foundation for future drug development. The findings explain why the receptor recognises only intact viral particles rather than isolated components.
The study used structural analysis at near-atomic resolution and functional testing of four neutralising antibodies, which act through two mechanisms. Whether these structural and antibody findings will produce usable antiviral therapies remains unresolved.
The players
Protocadherin-1 (PCDH1)
A cell-surface receptor that New World hantaviruses use to enter host cells, and the target of the structural study.
The details
PCDH1 binds asymmetrically within a deep central pocket formed by four Gn protomers in the viral spike, and mutagenesis identified three Gn loops that shape the receptor-binding site. These features allow PCDH1 binding to transfer from New World to Old World hantavirus glycoproteins.
Timeline
Study published in Nature in 2026 (Epub ahead of print).
Health Landscape
The study extends near-atomic receptor mapping, a method widely used in antiviral development, to hantaviruses, a virus group with no approved therapeutics. It moves hantavirus research closer to the structure-guided drug design approach that has shaped recent coronavirus countermeasures.
No hantavirus treatment is available to patients today, so this research does not change current care. Any future antiviral would require clinical trials before reaching people at risk.
The takeaway
Structural maps of how viruses attach to cells can guide the design of drugs that block that step. For hantaviruses, that groundwork is only beginning.
Further reading
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Source note: This article includes information reported by European Medical Journal.
