8HEG

Pentamer of FMDV (A/TUR/14/98) in complex with M3F

8HEG の概要

• エントリーDOI: 10.2210/pdb8heg/pdb
• EMDBエントリー: 34690
• 分子名称: VP1 of capsid protein, VP2 of capsid protein, VP3 of capsid protein, ... (4 entities in total)
• 機能のキーワード: fmdv, virus, antibody
• 由来する生物種: Lama glama; 詳細
• タンパク質・核酸の鎖数: 4
• 化学式量合計: 85303.69

構造登録者

Li, H.Z.,Dong, H.,Liu, P. (登録日: 2022-11-08, 公開日: 2023-11-15, 最終更新日: 2024-10-23)

主引用文献

Li, H.,Liu, P.,Dong, H.,Dekker, A.,Harmsen, M.M.,Guo, H.,Wang, X.,Sun, S.
Foot-and-mouth disease virus antigenic landscape and reduced immunogenicity elucidated in atomic detail.
Nat Commun, 15:8774-8774, 2024

PubMed Abstract: Unlike most other picornaviruses, foot-and-mouth disease (FMD) intact virions (146S) dissociate easily into small pentameric subunits (12S). This causes a dramatically decreased immunogenicity by a mechanism that remains elusive. Here, we present the high-resolution structures of 12S (3.2 Å) and its immune complex of a single-domain antibody (VHH) targeting the particle interior (3.2 Å), as well as two 146S-specific VHHs complexed to distinct sites on the 146S capsid surface (3.6 Å and 2.9 Å). The antigenic landscape of 146S is depicted using 13 known FMD virus-antibody complexes. Comparison of the immunogenicity of 146S and 12S in pigs, focusing on the resulting antigenic sites and incorporating structural analysis, reveals that dissociation of 146S leads to structural alteration and destruction of multiple epitopes, resulting in significant differences in antibody profiles/lineages induced by 12S and 146S. Furthermore, 146S generates higher synergistic neutralizing antibody titers compared to 12S, whereas both particles induce similar total FMD virus specific antibody titers. This study can guide the structure-based rational design of novel multivalent and broad-spectrum recombinant vaccines for protection against FMD.

PubMed: 39389971
DOI: 10.1038/s41467-024-53027-5

実験手法

ELECTRON MICROSCOPY (3.2 Å)