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-Structure paper
| タイトル | Cryogenic Electron Tomography Redefines Herpesvirus Capsid Assembly Intermediates Inside the Cell Nucleus. |
|---|---|
| ジャーナル・号・ページ | bioRxiv, Year 2025 |
| 掲載日 | 2025年6月28日 |
著者 | Stefan L Oliver / Muyuan Chen / Leeya Engel / Corey W Hecksel / Xueting Zhou / Michael F Schmid / Ann M Arvin / Wah Chiu |
| PubMed 要旨 | Herpesviruses encapsulate their double-stranded DNA (dsDNA) genomes within an icosahedral nucleocapsid formed in the infected cell nucleus. Four biochemically purified nucleocapsids have been ...Herpesviruses encapsulate their double-stranded DNA (dsDNA) genomes within an icosahedral nucleocapsid formed in the infected cell nucleus. Four biochemically purified nucleocapsids have been characterized, but their roles in herpesvirus replication remain controversial. The status of the capsid vertex-specific component (CVSC), essential for capsid stability and dsDNA packaging and retention, is also unclear. By integrating cryogenic focused ion beam milling with electron tomography and subtomogram averaging, we derived atomic models for all protein components, including the CVSC, across different herpesvirus capsid types within infected cell nuclei. Focused classification of pentonal vertex densities revealed differences in CVSC occupancy between genome-filled capsids and capsids lacking dsDNA, highlighting structural heterogeneity and providing insight into distinct capsid assembly stages . These intra-nuclear findings redefine the maturation model of herpesvirus capsid assembly, advancing the understanding of herpesvirus replication, and demonstrate the effectiveness of electron imaging by studying virus assembly within host cells. |
リンク | bioRxiv / PubMed:40666836 / PubMed Central |
| 手法 | EM (サブトモグラム平均) |
| 解像度 | 8.3 Å |
| 構造データ | EMDB-49591, PDB-9no1: |
| 由来 |
|
キーワード | VIRUS / Varicella-zoster virus / capsid / cryo-ET / cryo-FIB |
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著者
リンク

human alphaherpesvirus 3 (水痘・帯状疱疹ウイルス)
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