8FU7

Structure of Covid Spike variant deltaN135 in fully closed form

8FU7 の概要

• エントリーDOI: 10.2210/pdb8fu7/pdb
• EMDBエントリー: 29454 29455 29456
• 分子名称: Spike glycoprotein, 2-acetamido-2-deoxy-beta-D-glucopyranose (2 entities in total)
• 機能のキーワード: covid spike, sars-cov-2, viral protein
• 由来する生物種: Severe acute respiratory syndrome coronavirus 2
• タンパク質・核酸の鎖数: 3
• 化学式量合計: 407475.47

構造登録者

Yu, X.,Juraszek, J.,Rutten, L.,Bakkers, M.J.G.,Blokland, S.,Van den Broek, N.J.F.,Verwilligen, A.Y.W.,Abeywickrema, P.,Vingerhoets, J.,Neefs, J.,Bakhash, S.A.M.,Roychoudhury, P.,Greninger, A.,Sharma, S.,Langedijk, J.P.M. (登録日: 2023-01-16, 公開日: 2023-04-05, 最終更新日: 2024-04-24)

主引用文献

Yu, X.,Juraszek, J.,Rutten, L.,Bakkers, M.J.G.,Blokland, S.,Melchers, J.M.,van den Broek, N.J.F.,Verwilligen, A.Y.W.,Abeywickrema, P.,Vingerhoets, J.,Neefs, J.M.,Bakhash, S.A.M.,Roychoudhury, P.,Greninger, A.,Sharma, S.,Langedijk, J.P.M.
Convergence of immune escape strategies highlights plasticity of SARS-CoV-2 spike.
Plos Pathog., 19:e1011308-e1011308, 2023

PubMed Abstract: The global spread of the SARS-CoV-2 virus has resulted in emergence of lineages which impact the effectiveness of immunotherapies and vaccines that are based on the early Wuhan isolate. All currently approved vaccines employ the spike protein S, as it is the target for neutralizing antibodies. Here we describe two SARS-CoV-2 isolates with unusually large deletions in the N-terminal domain (NTD) of the spike. Cryo-EM structural analysis shows that the deletions result in complete reshaping of the NTD supersite, an antigenically important region of the NTD. For both spike variants the remodeling of the NTD negatively affects binding of all tested NTD-specific antibodies in and outside of the NTD supersite. For one of the variants, we observed a P9L mediated shift of the signal peptide cleavage site resulting in the loss of a disulfide-bridge; a unique escape mechanism with high antigenic impact. Although the observed deletions and disulfide mutations are rare, similar modifications have become independently established in several other lineages, indicating a possibility to become more dominant in the future. The observed plasticity of the NTD foreshadows its broad potential for immune escape with the continued spread of SARS-CoV-2.

PubMed: 37126534
DOI: 10.1371/journal.ppat.1011308

実験手法

ELECTRON MICROSCOPY (3.21 Å)