7SN0 image
Entry Detail
PDB ID:
7SN0
Keywords:
Title:
Crystal structure of spike protein receptor binding domain of escape mutant SARS-CoV-2 from immunocompromised patient (d146*) in complex with human receptor ACE2
Biological Source:
PDB Version:
Deposition Date:
2021-10-27
Release Date:
2021-12-08
Method Details:
Experimental Method:
Resolution:
3.08 Å
R-Value Free:
0.28
R-Value Work:
0.23
R-Value Observed:
0.23
Space Group:
P 21 21 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Angiotensin-converting enzyme 2
Chain IDs:A, B
Chain Length:621
Number of Molecules:2
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:Surface glycoprotein
Mutations:N440D, T478K, Y489H, Q493K, S494P
Chain IDs:C, D
Chain Length:271
Number of Molecules:2
Biological Source:Severe acute respiratory syndrome coronavirus 2
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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