ジャーナル: Nucleic Acids Res / 年: 2024 タイトル: Conserved structures and dynamics in 5'-proximal regions of Betacoronavirus RNA genomes. 著者: Tales Rocha de Moura / Elżbieta Purta / Agata Bernat / Eva M Martín-Cuevas / Małgorzata Kurkowska / Eugene F Baulin / Sunandan Mukherjee / Jakub Nowak / Artur P Biela / Michał Rawski / ...著者: Tales Rocha de Moura / Elżbieta Purta / Agata Bernat / Eva M Martín-Cuevas / Małgorzata Kurkowska / Eugene F Baulin / Sunandan Mukherjee / Jakub Nowak / Artur P Biela / Michał Rawski / Sebastian Glatt / Fernando Moreno-Herrero / Janusz M Bujnicki / 要旨: Betacoronaviruses are a genus within the Coronaviridae family of RNA viruses. They are capable of infecting vertebrates and causing epidemics as well as global pandemics in humans. Mitigating the ...Betacoronaviruses are a genus within the Coronaviridae family of RNA viruses. They are capable of infecting vertebrates and causing epidemics as well as global pandemics in humans. Mitigating the threat posed by Betacoronaviruses requires an understanding of their molecular diversity. The development of novel antivirals hinges on understanding the key regulatory elements within the viral RNA genomes, in particular the 5'-proximal region, which is pivotal for viral protein synthesis. Using a combination of cryo-electron microscopy, atomic force microscopy, chemical probing, and computational modeling, we determined the structures of 5'-proximal regions in RNA genomes of Betacoronaviruses from four subgenera: OC43-CoV, SARS-CoV-2, MERS-CoV, and Rousettus bat-CoV. We obtained cryo-electron microscopy maps and determined atomic-resolution models for the stem-loop-5 (SL5) region at the translation start site and found that despite low sequence similarity and variable length of the helical elements it exhibits a remarkable structural conservation. Atomic force microscopy imaging revealed a common domain organization and a dynamic arrangement of structural elements connected with flexible linkers across all four Betacoronavirus subgenera. Together, these results reveal common features of a critical regulatory region shared between different Betacoronavirus RNA genomes, which may allow targeting of these RNAs by broad-spectrum antiviral therapeutics.
履歴
登録
2023年9月28日
登録サイト: PDBE / 処理サイト: PDBE
改定 1.0
2024年3月6日
Provider: repository / タイプ: Initial release
改定 1.0
2024年3月6日
Data content type: EM metadata / Data content type: EM metadata / Provider: repository / タイプ: Initial release
改定 1.0
2024年3月6日
Data content type: FSC / Data content type: FSC / Provider: repository / タイプ: Initial release
改定 1.0
2024年3月6日
Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / タイプ: Initial release
改定 1.0
2024年3月6日
Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / タイプ: Initial release
改定 1.0
2024年3月6日
Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
改定 1.0
2024年3月6日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
改定 1.0
2024年3月6日
Data content type: FSC / Data content type: FSC / Provider: repository / タイプ: Initial release
改定 1.0
2024年3月6日
Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / タイプ: Initial release
改定 1.0
2024年3月6日
Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / タイプ: Initial release
改定 1.0
2024年3月6日
Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
改定 1.0
2024年3月6日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
改定 1.0
2024年3月6日
Data content type: FSC / Data content type: FSC / Provider: repository / タイプ: Initial release
改定 1.0
2024年3月6日
Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / タイプ: Initial release
改定 1.0
2024年3月6日
Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / タイプ: Initial release
改定 1.0
2024年3月6日
Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
改定 1.0
2024年3月6日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
Data content type: EM metadata / Data content type: EM metadata / EM metadata / Group: Data processing / Experimental summary / Data content type: EM metadata / EM metadata / カテゴリ: em_admin / em_software / Data content type: EM metadata / EM metadata / Item: _em_admin.last_update / _em_software.name