8A96

SARS Cov2 Spike RBD in complex with Fab47

8A96 の概要

• エントリーDOI: 10.2210/pdb8a96/pdb
• EMDBエントリー: 15271
• 分子名称: Spike protein S1, Fab47 Heavy chain (variable domain), Fab47 Light chain (variable domain) (3 entities in total)
• 機能のキーワード: spike, antibody, viral protein
• 由来する生物種: Severe acute respiratory syndrome coronavirus; 詳細
• タンパク質・核酸の鎖数: 3
• 化学式量合計: 47808.39

構造登録者

Hallberg, B.M.,Das, H. (登録日: 2022-06-27, 公開日: 2023-05-03, 最終更新日: 2024-11-13)

主引用文献

Pushparaj, P.,Nicoletto, A.,Sheward, D.J.,Das, H.,Castro Dopico, X.,Perez Vidakovics, L.,Hanke, L.,Chernyshev, M.,Narang, S.,Kim, S.,Fischbach, J.,Ekstrom, S.,McInerney, G.,Hallberg, B.M.,Murrell, B.,Corcoran, M.,Karlsson Hedestam, G.B.
Immunoglobulin germline gene polymorphisms influence the function of SARS-CoV-2 neutralizing antibodies.
Immunity, 56:193-206.e7, 2023

PubMed Abstract: The human immunoglobulin heavy-chain (IGH) locus is exceptionally polymorphic, with high levels of allelic and structural variation. Thus, germline IGH genotypes are personal, which may influence responses to infection and vaccination. For an improved understanding of inter-individual differences in antibody responses, we isolated SARS-CoV-2 spike-specific monoclonal antibodies from convalescent health care workers, focusing on the IGHV1-69 gene, which has the highest level of allelic variation of all IGHV genes. The IGHV1-6920-using CAB-I47 antibody and two similar antibodies isolated from an independent donor were critically dependent on allele usage. Neutralization was retained when reverting the V region to the germline IGHV1-6920 allele but lost when reverting to other IGHV1-69 alleles. Structural data confirmed that two germline-encoded polymorphisms, R50 and F55, in the IGHV1-69 gene were required for high-affinity receptor-binding domain interaction. These results demonstrate that polymorphisms in IGH genes can influence the function of SARS-CoV-2 neutralizing antibodies.

PubMed: 36574772
DOI: 10.1016/j.immuni.2022.12.005

実験手法

ELECTRON MICROSCOPY (2.7 Å)