6LGL

The atomic structure of varicella-zoster virus A-capsid

これはPDB形式変換不可エントリーです。

6LGL の概要

• エントリーDOI: 10.2210/pdb6lgl/pdb
• EMDBエントリー: 0880
• 分子名称: Major capsid protein, Small capsomere-interacting protein, Triplex capsid protein 1, ... (4 entities in total)
• 機能のキーワード: herpesvirus, varicella-zoster virus, capsid, virus
• 由来する生物種: Human herpesvirus 3 (HHV-3,Human alphaherpesvirus 3); 詳細
• タンパク質・核酸の鎖数: 46
• 化学式量合計: 3463287.57

構造登録者

Zheng, Q.,Li, S. (登録日: 2019-12-05, 公開日: 2020-07-29, 最終更新日: 2024-05-29)

主引用文献

Wang, W.,Zheng, Q.,Pan, D.,Yu, H.,Fu, W.,Liu, J.,He, M.,Zhu, R.,Cai, Y.,Huang, Y.,Zha, Z.,Chen, Z.,Ye, X.,Han, J.,Que, Y.,Wu, T.,Zhang, J.,Li, S.,Zhu, H.,Zhou, Z.H.,Cheng, T.,Xia, N.
Near-atomic cryo-electron microscopy structures of varicella-zoster virus capsids.
Nat Microbiol, 5:1542-1552, 2020

PubMed Abstract: Varicella-zoster virus (VZV) is a medically important human herpesvirus that causes chickenpox and shingles, but its cell-associated nature has hindered structure studies. Here we report the cryo-electron microscopy structures of purified VZV A-capsid and C-capsid, as well as of the DNA-containing capsid inside the virion. Atomic models derived from these structures show that, despite enclosing a genome that is substantially smaller than those of other human herpesviruses, VZV has a similarly sized capsid, consisting of 955 major capsid protein (MCP), 900 small capsid protein (SCP), 640 triplex dimer (Tri2) and 320 triplex monomer (Tri1) subunits. The VZV capsid has high thermal stability, although with relatively fewer intra- and inter-capsid protein interactions and less stably associated tegument proteins compared with other human herpesviruses. Analysis with antibodies targeting the N and C termini of the VZV SCP indicates that the hexon-capping SCP-the largest among human herpesviruses-uses its N-terminal half to bridge hexon MCP subunits and possesses a C-terminal flexible half emanating from the inner rim of the upper hexon channel into the tegument layer. Correlation of these structural features and functional observations provide insights into VZV assembly and pathogenesis and should help efforts to engineer gene delivery and anticancer vectors based on the currently available VZV vaccine.

PubMed: 32895526
DOI: 10.1038/s41564-020-0785-y

実験手法

ELECTRON MICROSCOPY (4.4 Å)