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-Structure paper
| タイトル | Structural basis of poxvirus fusion regulation and anti-A16/G9 antibody-mediated neutralization and protection. |
|---|---|
| ジャーナル・号・ページ | Cell, Vol. 188, Issue 22, Page 6266-6282.e18, Year 2025 |
| 掲載日 | 2025年10月30日 |
著者 | Annalisa Meola / Riccardo Vernuccio / Leandro Battini / Guillermo Albericio / Pilar Delgado / Rebecca Bamford / Laura Pokorny / Manon Broutin / Alejandro Martínez León / Sébastien Gallien / María Gil / María A Noriega / Florence Guivel-Benhassine / Françoise Porrot / Jeanne Postal / Julian Buchrieser / Mathieu Hubert / Ahmed Haouz / Pierre Lafaye / Mariano Esteban / Jochen S Hub / Matthieu Mahévas / Pascal Chappert / Jason Mercer / Juan Garcia-Arriaza / Olivier Schwartz / Pablo Guardado-Calvo / ![]() |
| PubMed 要旨 | Monkeypox virus (MPXV) is a poxvirus endemic to Central and West Africa with high epidemic potential. Poxviruses enter host cells via a conserved entry-fusion complex (EFC), which mediates viral ...Monkeypox virus (MPXV) is a poxvirus endemic to Central and West Africa with high epidemic potential. Poxviruses enter host cells via a conserved entry-fusion complex (EFC), which mediates viral fusion to the cell membrane. The EFC is a promising therapeutic target, but the absence of structural data has limited the development of fusion-inhibiting treatments. Here, we investigated A16/G9, a subcomplex of the EFC that controls fusion timing. Using cryo-electron microscopy, we showed how A16/G9 interacts with A56/K2, a viral fusion suppressor that prevents superinfection. Immunization with A16/G9 elicited a protective immune response in mice. Using X-ray crystallography, we characterized two neutralizing antibodies and engineered a chimeric antibody that cross-neutralizes several poxviruses more efficiently than 7D11, the most potent antibody targeting the EFC described to date. These findings highlight the potential of A16/G9 as a candidate for subunit vaccines and identify regions of the EFC as targets for antiviral development. |
リンク | Cell / PubMed:40865523 |
| 手法 | EM (単粒子) / X線回折 |
| 解像度 | 2.45 - 4.0 Å |
| 構造データ | EMDB-52019, PDB-9hbk: EMDB-53936, PDB-9rdh: ![]() PDB-9hl2: ![]() PDB-9hls: ![]() PDB-9hng: ![]() PDB-9hpa: ![]() PDB-9r09: ![]() PDB-9r0b: ![]() PDB-9r0j: |
| 化合物 | ![]() ChemComp-NAG: ![]() ChemComp-PEG: ![]() ChemComp-HOH: ![]() ChemComp-K: ![]() ChemComp-PO4: ![]() ChemComp-SO4: ![]() ChemComp-MES: ![]() ChemComp-GOL: |
| 由来 |
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キーワード | VIRAL PROTEIN / poxvirus / viral fusion / vaccinia virus / mpox virus |
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Vaccinia virus (ウイルス)
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