7MM0 image
Entry Detail
PDB ID:
7MM0
EMDB ID:
Title:
Cryo-EM structure of SARS-CoV-2 spike in complex with neutralizing antibody B1-182.1 that targets the receptor-binding domain
Biological Source:
PDB Version:
Deposition Date:
2021-04-29
Release Date:
2021-07-28
Method Details:
Experimental Method:
Resolution:
3.15 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:C (auth: A), D (auth: B), E (auth: C)
Chain Length:1195
Number of Molecules:3
Biological Source:Severe acute respiratory syndrome coronavirus 2
Polymer Type:polypeptide(L)
Description:B1-182.1 Fab heavy chain
Chain IDs:A (auth: H)
Chain Length:228
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:B1-182.1 Fab light chain
Chain IDs:B (auth: L)
Chain Length:215
Number of Molecules:1
Biological Source:Homo sapiens
Ligand Molecules
Primary Citation

Abstact

The emergence of highly transmissible SARS-CoV-2 variants of concern (VOCs) that are resistant to therapeutic antibodies highlights the need for continuing discovery of broadly reactive antibodies. We identified four receptor binding domain-targeting antibodies from three early-outbreak convalescent donors with potent neutralizing activity against 23 variants, including the B.1.1.7, B.1.351, P.1, B.1.429, B.1.526, and B.1.617 VOCs. Two antibodies are ultrapotent, with subnanomolar neutralization titers [half-maximal inhibitory concentration (IC50) 0.3 to 11.1 nanograms per milliliter; IC80 1.5 to 34.5 nanograms per milliliter). We define the structural and functional determinants of binding for all four VOC-targeting antibodies and show that combinations of two antibodies decrease the in vitro generation of escape mutants, suggesting their potential in mitigating resistance development.

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Disease

Primary Citation of related structures