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-Structure paper
タイトル | Enterovirus particles expel capsid pentamers to enable genome release. |
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ジャーナル・号・ページ | Nat Commun, Vol. 10, Issue 1, Page 1138, Year 2019 |
掲載日 | 2019年3月8日 |
著者 | David Buchta / Tibor Füzik / Dominik Hrebík / Yevgen Levdansky / Lukáš Sukeník / Liya Mukhamedova / Jana Moravcová / Robert Vácha / Pavel Plevka / |
PubMed 要旨 | Viruses from the genus Enterovirus are important human pathogens. Receptor binding or exposure to acidic pH in endosomes converts enterovirus particles to an activated state that is required for ...Viruses from the genus Enterovirus are important human pathogens. Receptor binding or exposure to acidic pH in endosomes converts enterovirus particles to an activated state that is required for genome release. However, the mechanism of enterovirus uncoating is not well understood. Here, we use cryo-electron microscopy to visualize virions of human echovirus 18 in the process of genome release. We discover that the exit of the RNA from the particle of echovirus 18 results in a loss of one, two, or three adjacent capsid-protein pentamers. The opening in the capsid, which is more than 120 Å in diameter, enables the release of the genome without the need to unwind its putative double-stranded RNA segments. We also detect capsids lacking pentamers during genome release from echovirus 30. Thus, our findings uncover a mechanism of enterovirus genome release that could become target for antiviral drugs. |
リンク | Nat Commun / PubMed:30850609 / PubMed Central |
手法 | EM (単粒子) |
解像度 | 3.16 - 19.4 Å |
構造データ | EMDB-0184: EMDB-0186: EMDB-0187: EMDB-0189: |
化合物 | ChemComp-PLM: ChemComp-GUN: |
由来 |
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キーワード | VIRUS / echovirus / echovirus 18 / native particle / enterovirus / picornavirus / altered particle / A-particle / empty particle / B-particle / open particle / O-particle / genome release |