8EQA image
Deposition Date 2022-10-07
Release Date 2023-08-09
Last Version Date 2024-11-20
Entry Detail
PDB ID:
8EQA
Keywords:
Title:
Crystal structure of human anti-N1 neuraminidase 2H08 Fab
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Host Organism:
Method Details:
Experimental Method:
Resolution:
2.55 Å
R-Value Free:
0.26
R-Value Work:
0.21
R-Value Observed:
0.21
Space Group:
P 2 21 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:2H08 Fab heavy chain
Chain IDs:B (auth: H), D (auth: B)
Chain Length:225
Number of Molecules:2
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Molecule:2H08 Fab light chain
Chain IDs:A (auth: L), C (auth: A)
Chain Length:215
Number of Molecules:2
Biological Source:Homo sapiens
Ligand Molecules
Primary Citation
Human anti-N1 monoclonal antibodies elicited by pandemic H1N1 virus infection broadly inhibit HxN1 viruses in vitro and in vivo.
Immunity 56 1927 ? (2023)
PMID: 37506693 DOI: 10.1016/j.immuni.2023.07.004

Abstact

Neuraminidase (NA) is one of the two influenza virus surface glycoproteins, and antibodies that target it are an independent correlate of protection. However, our current understanding of NA antigenicity is incomplete. Here, we describe human monoclonal antibodies (mAbs) from a patient with a pandemic H1N1 virus infection in 2009. Two mAbs exhibited broad reactivity and inhibited NA enzyme activity of seasonal H1N1 viruses circulating before and after 2009, as well as viruses with avian or swine N1s. The mAbs provided robust protection from lethal challenge with human H1N1 and avian H5N1 viruses in mice, and both target an epitope on the lateral face of NA. In summary, we identified two broadly protective NA antibodies that share a novel epitope, inhibited NA activity, and provide protection against virus challenge in mice. Our work reaffirms that NA should be included as a target in future broadly protective or universal influenza virus vaccines.

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Primary Citation of related structures