- PDB-6s6l: Cryo-EM structure of murine norovirus (MNV-1) -
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基本情報
登録情報
データベース: PDB / ID: 6s6l
タイトル
Cryo-EM structure of murine norovirus (MNV-1)
要素
Capsid protein
キーワード
VIRUS / Norovirus / Capsid / VP1
機能・相同性
Calicivirus coat protein C-terminal / Calicivirus coat protein C-terminal / Calicivirus coat protein / Calicivirus coat protein / Picornavirus/Calicivirus coat protein / Viral coat protein subunit / virus-mediated perturbation of host defense response / Capsid protein
ジャーナル: PLoS Biol / 年: 2020 タイトル: Dynamics in the murine norovirus capsid revealed by high-resolution cryo-EM. 著者: Joseph S Snowden / Daniel L Hurdiss / Oluwapelumi O Adeyemi / Neil A Ranson / Morgan R Herod / Nicola J Stonehouse / 要旨: Icosahedral viral capsids must undergo conformational rearrangements to coordinate essential processes during the viral life cycle. Capturing such conformational flexibility has been technically ...Icosahedral viral capsids must undergo conformational rearrangements to coordinate essential processes during the viral life cycle. Capturing such conformational flexibility has been technically challenging yet could be key for developing rational therapeutic agents to combat infections. Noroviruses are nonenveloped, icosahedral viruses of global importance to human health. They are a common cause of acute gastroenteritis, yet no vaccines or specific antiviral agents are available. Here, we use genetics and cryo-electron microscopy (cryo-EM) to study the high-resolution solution structures of murine norovirus as a model for human viruses. By comparing our 3 structures (at 2.9- to 3.1-Å resolution), we show that whilst there is little change to the shell domain of the capsid, the radiating protruding domains are flexible, adopting distinct states both independently and synchronously. In doing so, the capsids sample a range of conformational space, with implications for maintaining virion stability and infectivity.