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-Structure paper
| タイトル | Virion morphology and on-virus spike protein structures of diverse SARS-CoV-2 variants. |
|---|---|
| ジャーナル・号・ページ | EMBO J, Vol. 43, Issue 24, Page 6469-6495, Year 2024 |
| 掲載日 | 2024年11月14日 |
著者 | Zunlong Ke / Thomas P Peacock / Jonathan C Brown / Carol M Sheppard / Tristan I Croll / Abhay Kotecha / Daniel H Goldhill / Wendy S Barclay / John A G Briggs / ![]() |
| PubMed 要旨 | The evolution of SARS-CoV-2 variants with increased fitness has been accompanied by structural changes in the spike (S) proteins, which are the major target for the adaptive immune response. Single- ...The evolution of SARS-CoV-2 variants with increased fitness has been accompanied by structural changes in the spike (S) proteins, which are the major target for the adaptive immune response. Single-particle cryo-EM analysis of soluble S protein from SARS-CoV-2 variants has revealed this structural adaptation at high resolution. The analysis of S trimers in situ on intact virions has the potential to provide more functionally relevant insights into S structure and virion morphology. Here, we characterized B.1, Alpha, Beta, Gamma, Delta, Kappa, and Mu variants by cryo-electron microscopy and tomography, assessing S cleavage, virion morphology, S incorporation, "in-situ" high-resolution S structures, and the range of S conformational states. We found no evidence for adaptive changes in virion morphology, but describe multiple different positions in the S protein where amino acid changes alter local protein structure. Taken together, our data are consistent with a model where amino acid changes at multiple positions from the top to the base of the spike cause structural changes that can modulate the conformational dynamics of the S protein. |
リンク | EMBO J / PubMed:39543395 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 2.8 - 4.0 Å |
| 構造データ | EMDB-45863, PDB-9crc: EMDB-45864, PDB-9crd: EMDB-45865, PDB-9cre: EMDB-45866, PDB-9crf: EMDB-45867, PDB-9crg: EMDB-45868, PDB-9crh: EMDB-45869, PDB-9cri: |
| 化合物 | ![]() ChemComp-NAG: ![]() ChemComp-ZN: |
| 由来 |
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キーワード | VIRAL PROTEIN / SARS-CoV-2 variant / B.1 strain / Alpha (B.1.1.7) variant / VIRUS / Gamma (P.1) variant / Delta (B.1.617.2) variant / Mu (B.1.621) variant |
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