ISDA

Entry Detail

PDB ID:

7YP2

EMDB ID:

EMD-33994

Keywords:

VIRAL PROTEIN

Title:

Cryo-EM structure of EBV gHgL-gp42 in complex with mAb 6H2 (localized refinement)

Biological Source:

Source Organism:

Human gammaherpesvirus 4, Mus musculus

Host Organism:

Homo sapiens

PDB Version:

Deposition Date:

2022-08-02

Release Date:

2024-01-31

Method Details:

Experimental Method:

ELECTRON MICROSCOPY

Resolution:

3.52 Å

Aggregation State:

PARTICLE

Reconstruction Method:

SINGLE PARTICLE

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Envelope glycoprotein H
Chain IDs:A
Chain Length:314
Number of Molecules:1
Biological Source:Human gammaherpesvirus 4

UniProt ID:P03231 Pfam ID:PF02489, PF17488

Polymer Type:polypeptide(L)
Description:6H2 heavy chain
Chain IDs:B (auth: H)
Chain Length:120
Number of Molecules:1
Biological Source:Mus musculus

Polymer Type:polypeptide(L)
Description:6H2 light chain
Chain IDs:C (auth: L)
Chain Length:112
Number of Molecules:1
Biological Source:Mus musculus

Ligand Molecules

Primary Citation

Non-overlapping epitopes on the gHgL-gp42 complex for the rational design of a triple-antibody cocktail against EBV infection.

Hong, J, Zhong, L, Liu, L, Wu, Q, Zhang, W, Chen, K, Wei, D, Sun, H, Zhou, X, Zhang, X, Kang, Y.F, Huang, Y, Chen, J, Wang, G, Zhou, Y, Chen, Y, Feng, Q.S, Yu, H, Li, S, Zeng, M.S, Zeng, Y.X, Xu, M, Zheng, Q, Chen, Y, Zhang, X, Xia, N.Show

Cell Rep Med 4 101296 101296 (2023)

PMID: 37992686 DOI: 10.1016/j.xcrm.2023.101296

Abstact

Epstein-Barr virus (EBV) is closely associated with cancer, multiple sclerosis, and post-acute coronavirus disease 2019 (COVID-19) sequelae. There are currently no approved therapeutics or vaccines against EBV. It is noteworthy that combining multiple EBV glycoproteins can elicit potent neutralizing antibodies (nAbs) against viral infection, suggesting possible synergistic effects. Here, we characterize three nAbs (anti-gp42 5E3, anti-gHgL 6H2, and anti-gHgL 10E4) targeting different glycoproteins of the gHgL-gp42 complex. Two antibody cocktails synergistically neutralize infection in B cells (5E3+6H2+10E4) and epithelial cells (6H2+10E4) in vitro. Moreover, 5E3 alone and the 5E3+6H2+10E4 cocktail confer potent in vivo protection against lethal EBV challenge in humanized mice. The cryo-EM structure of a heptatomic gHgL-gp42 immune complex reveals non-overlapping epitopes of 5E3, 6H2, and 10E4 on the gHgL-gp42 complex. Structural and functional analyses highlight different neutralization mechanisms for each of the three nAbs. In summary, our results provide insight for the rational design of therapeutics or vaccines against EBV infection.

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