7UOW image
Entry Detail
PDB ID:
7UOW
EMDB ID:
Keywords:
Title:
SARS-Cov2 S protein structure in complex with neutralizing monoclonal antibody 034_32
Biological Source:
PDB Version:
Deposition Date:
2022-04-14
Release Date:
2023-04-19
Method Details:
Experimental Method:
Resolution:
4.40 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Spike glycoprotein
Chain IDs:A, B, C
Chain Length:1208
Number of Molecules:3
Biological Source:Severe acute respiratory syndrome coronavirus
Polymer Type:polypeptide(L)
Description:Monoclonal antibody 034_32 heavy chain
Chain IDs:D (auth: H), F (auth: J)
Chain Length:447
Number of Molecules:2
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:Monoclonal antibody 034_32 light chain
Chain IDs:E (auth: I), G (auth: L)
Chain Length:215
Number of Molecules:2
Biological Source:Homo sapiens
Ligand Molecules
Primary Citation

Abstact

Understanding the molecular features of neutralizing epitopes is important for developing vaccines/therapeutics against emerging SARS-CoV-2 variants. We describe three monoclonal antibodies (mAbs) generated from COVID-19 recovered individuals during the first wave of the pandemic in India. These mAbs had publicly shared near germline gene usage and potently neutralized Alpha and Delta, poorly neutralized Beta, and failed to neutralize Omicron BA.1 SARS-CoV-2 variants. Structural analysis of these mAbs in complex with trimeric spike protein showed that all three mAbs bivalently bind spike with two mAbs targeting class 1 and one targeting a class 4 receptor binding domain epitope. The immunogenetic makeup, structure, and function of these mAbs revealed specific molecular interactions associated with the potent multi-variant binding/neutralization efficacy. This knowledge shows how mutational combinations can affect the binding or neutralization of an antibody, which in turn relates to the efficacy of immune responses to emerging SARS-CoV-2 escape variants.

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Primary Citation of related structures