7SN3 image
Entry Detail
PDB ID:
7SN3
EMDB ID:
Title:
Structure of human SARS-CoV-2 spike glycoprotein trimer bound by neutralizing antibody C1C-A3 Fab (variable region)
Biological Source:
PDB Version:
Deposition Date:
2021-10-27
Release Date:
2021-12-08
Method Details:
Experimental Method:
Resolution:
3.10 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Spike glycoprotein
Mutations:R682G, R683S, R685S, F817P, A892P, A899P, A942P, K986P, V987P
Chain IDs:A, B, C
Chain Length:1273
Number of Molecules:3
Biological Source:Severe acute respiratory syndrome coronavirus 2
Polymer Type:polypeptide(L)
Description:neutralizing antibody C1C-A3 heavy chain variable region
Chain IDs:D, F, H
Chain Length:250
Number of Molecules:3
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:neutralizing antibody C1C-A3 light chain variable region
Chain IDs:E, G, I (auth: L)
Chain Length:238
Number of Molecules:3
Biological Source:Homo sapiens
Ligand Molecules
Primary Citation

Abstact

Many studies have examined the impact of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants on neutralizing antibody activity after they have become dominant strains. Here, we evaluate the consequences of further viral evolution. We demonstrate mechanisms through which the SARS-CoV-2 receptor binding domain (RBD) can tolerate large numbers of simultaneous antibody escape mutations and show that pseudotypes containing up to seven mutations, as opposed to the one to three found in previously studied variants of concern, are more resistant to neutralization by therapeutic antibodies and serum from vaccine recipients. We identify an antibody that binds the RBD core to neutralize pseudotypes for all tested variants but show that the RBD can acquire an N-linked glycan to escape neutralization. Our findings portend continued emergence of escape variants as SARS-CoV-2 adapts to humans.

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Primary Citation of related structures