- EMDB-26118: Woodchuck hepatitis virus small spherical subviral particle -
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基本情報
登録情報
データベース: EMDB / ID: EMD-26118
タイトル
Woodchuck hepatitis virus small spherical subviral particle
マップデータ
Hepatitis virus small spherical subviral particle
試料
ウイルス: Woodchuck hepatitis virus 7 (ウイルス)
機能・相同性
Large envelope protein S / Major surface antigen from hepadnavirus / caveolin-mediated endocytosis of virus by host cell / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / virion membrane / membrane / Large envelope protein
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)
米国
引用
ジャーナル: Sci Adv / 年: 2022 タイトル: Cryo-EM structures of human hepatitis B and woodchuck hepatitis virus small spherical subviral particles. 著者: Haitao Liu / Xupeng Hong / Ji Xi / Stephan Menne / Jianming Hu / Joseph Che-Yen Wang / 要旨: The loss of detectable hepatitis B surface antigen (HBsAg) is considered a functional cure in chronic hepatitis B. Naturally, HBsAg can be incorporated into the virion envelope or assembled into ...The loss of detectable hepatitis B surface antigen (HBsAg) is considered a functional cure in chronic hepatitis B. Naturally, HBsAg can be incorporated into the virion envelope or assembled into subviral particles (SVPs) with lipid from host cells. Until now, there has been no detailed structure of HBsAg, and the published SVP structures are controversial. Here, we report the first subnanometer-resolution structures of spherical SVP from hepatitis B virus (HBV) and the related woodchuck hepatitis virus (WHV) determined by cryo-electron microscopy in combination with AlphaFold2 prediction. Both structures showed unique rhombicuboctahedral symmetry with 24 protruding spikes comprising dimer of small HBsAg with four helical domains. The lipid moiety in the SVP is organized in a noncanonical lipid patch instead of a lipid bilayer, which can accommodate the exposed hydrophobic surface and modulate particle stability. Together, these findings advance our knowledge of viral membrane organization and the structures of HBV and WHV spherical SVPs.