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Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Structure 2021 ; 29 (7): 655-663.e4 Nephropedia Template TP
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Structural basis for accommodation of emerging B 1 351 and B 1 1 7 variants by two potent SARS-CoV-2 neutralizing antibodies #MMPMID34111408
Cerutti G; Rapp M; Guo Y; Bahna F; Bimela J; Reddem ER; Yu J; Wang P; Liu L; Huang Y; Ho DD; Kwong PD; Sheng Z; Shapiro L
Structure 2021[Jul]; 29 (7): 655-663.e4 PMID34111408show ga
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.