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-Structure paper
タイトル | Structural basis for accommodation of emerging B.1.351 and B.1.1.7 variants by two potent SARS-CoV-2 neutralizing antibodies. |
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ジャーナル・号・ページ | Structure, Vol. 29, Issue 7, Page 655-663.e4, Year 2021 |
掲載日 | 2021年7月1日 |
著者 | Gabriele Cerutti / Micah Rapp / Yicheng Guo / Fabiana Bahna / Jude Bimela / Eswar R Reddem / Jian Yu / Pengfei Wang / Lihong Liu / Yaoxing Huang / David D Ho / Peter D Kwong / Zizhang Sheng / Lawrence Shapiro / |
PubMed 要旨 | Emerging SARS-CoV-2 strains, B.1.1.7 and B.1.351, from the UK and South Africa, respectively, show decreased neutralization by monoclonal antibodies and convalescent or vaccinee sera raised against ...Emerging SARS-CoV-2 strains, B.1.1.7 and B.1.351, from the UK and South Africa, respectively, show decreased neutralization by monoclonal antibodies and convalescent or vaccinee sera raised against the original wild-type virus, and are thus of clinical concern. However, the neutralization potency of two antibodies, 1-57 and 2-7, which target the receptor-binding domain (RBD) of the spike, was unaffected by these emerging strains. Here, we report cryo-EM structures of 1-57 and 2-7 in complex with spike, revealing each of these antibodies to utilize a distinct mechanism to bypass or accommodate RBD mutations. Notably, each antibody represented an immune response with recognition distinct from those of frequent antibody classes. Moreover, many epitope residues recognized by 1-57 and 2-7 were outside hotspots of evolutionary pressure for ACE2 binding and neutralizing antibody escape. We suggest the therapeutic use of antibodies, such as 1-57 and 2-7, which target less prevalent epitopes, could ameliorate issues of monoclonal antibody escape. |
リンク | Structure / PubMed:34111408 / PubMed Central |
手法 | EM (単粒子) |
解像度 | 3.42 - 3.72 Å |
構造データ | EMDB-23506, PDB-7ls9: EMDB-23507, PDB-7lss: |
化合物 | ChemComp-NAG: |
由来 |
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キーワード | VIRAL PROTEIN/IMMUNE SYSTEM (ウイルス性) / Neutralizing antibody (中和抗体) / Fusion protein (融合タンパク質) / Spike glycoprotein (スパイクタンパク質) / COVID-19 (新型コロナウイルス感染症 (2019年)) / RBD / RBD-directed antibody / 1-57 / Viral protein (ウイルスタンパク質) / IMMUNE SYSTEM (免疫系) / Viral Protein-IMMUNE SYSTEM complex (ウイルス性) / SARS-CoV-2 (SARSコロナウイルス2) / spike / antibody (抗体) |