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-Structure paper
| タイトル | Metal-induced conformational changes in the Sabiá virus spike complex. |
|---|---|
| ジャーナル・号・ページ | Nat Microbiol, Vol. 10, Issue 9, Page 2221-2230, Year 2025 |
| 掲載日 | 2025年8月1日 |
著者 | Hadas Cohen-Dvashi / Michael Katz / Ron Diskin / ![]() |
| PubMed 要旨 | Haemorrhagic fever viruses from the Arenaviridae are a source of concern owing to their potential to cause lethal outbreaks and the lack of effective therapeutics. While structures of spike proteins ...Haemorrhagic fever viruses from the Arenaviridae are a source of concern owing to their potential to cause lethal outbreaks and the lack of effective therapeutics. While structures of spike proteins from 'Old World' arenaviruses are available, the differences and similarities to 'New World' arenaviruses, such as the Sabiá virus, remain unclear owing to the lack of New World spike structures. Here we present the structure of the isolated spike complex from the Sabiá virus, which mediates viral attachment and entry to the host cells, using single-particle cryo-electron microscopy. We find two distinct conformational states of the spike, representing its native closed state at 2.6 Å resolution and an open state at 2.9 Å resolution that it assumes during cell entry. In addition, we show that the opening of the spike and subsequent cell entry are dependent on acidic pH and an unidentified metal ion. Our study suggests potential differences in the cell entry mechanisms of clade B arenaviruses compared with others in the Arenaviridae family. |
リンク | Nat Microbiol / PubMed:40751015 |
| 手法 | EM (単粒子) |
| 解像度 | 2.44 - 2.92 Å |
| 構造データ | EMDB-50862, PDB-9fya: EMDB-50864: Structure of the Sabia Virus spike complex in a closed conformation EMDB-50865, PDB-9fyg: |
| 化合物 | ![]() ChemComp-NAG: ![]() ChemComp-ZN: ![]() ChemComp-HOH: ![]() ChemComp-K: |
| 由来 |
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キーワード | VIRAL PROTEIN / Class-I spike complex |
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sabia virus (サビアウイルス)
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