ISDA

Deposition Date 2021-02-09

Release Date 2021-09-15

Last Version Date 2025-06-25

Entry Detail

PDB ID:

7E3L

Keywords:

VIRAL PROTEIN

Title:

Ultrapotent SARS-CoV-2 neutralizing antibodies with protective efficacy against newly emerged mutational variants

Biological Source:

Source Organism:

Severe acute respiratory syndrome coronavirus 2 (Taxon ID: 2697049)
Homo sapiens (Taxon ID: 9606)

Host Organism:

Homo sapiens

Method Details:

Experimental Method:

ELECTRON MICROSCOPY

Resolution:

3.60 Å

Aggregation State:

PARTICLE

Reconstruction Method:

SINGLE PARTICLE

Download Validation Report

Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Spike glycoprotein
Gene (Uniprot):S
Mutations:R682G, R683S, R685S, K986P, V987P
Chain IDs:A, B, C
Chain Length:1288
Number of Molecules:3
Biological Source:Severe acute respiratory syndrome coronavirus 2

UniProt ID:P0DTC2 Pfam ID:PF16451, PF09408, PF19209, PF01601

Polymer Type:polypeptide(L)
Molecule:58G6 heavy chain
Chain IDs:D (auth: H), F, H (auth: D)
Chain Length:221
Number of Molecules:3
Biological Source:Homo sapiens

Polymer Type:polypeptide(L)
Molecule:58G6 light chain
Chain IDs:E (auth: L), G, I (auth: E)
Chain Length:215
Number of Molecules:3
Biological Source:Homo sapiens

Ligand Molecules

NAG

Primary Citation

Potent SARS-CoV-2 neutralizing antibodies with protective efficacy against newly emerged mutational variants.

Li, T, Han, X, Gu, C, Guo, H, Zhang, H, Wang, Y, Hu, C, Wang, K, Liu, F, Luo, F, Zhang, Y, Hu, J, Wang, W, Li, S, Hao, Y, Shen, M, Huang, J, Long, Y, Song, S, Wu, R, Mu, S, Chen, Q, Gao, F, Wang, J, Long, S, Li, L, Wu, Y, Gao, Y, Xu, W, Cai, X, Qu, D, Zhang, Z, Zhang, H, Li, N, Gao, Q, Zhang, G, He, C, Wang, W, Ji, X, Tang, N, Yuan, Z, Xie, Y, Yang, H, Zhang, B, Huang, A, Jin, A.Show

Nat Commun 12 6304 6304 (2021)

PMID: 34728625 DOI: 10.1038/s41467-021-26539-7

Abstact

Accumulating mutations in the SARS-CoV-2 Spike (S) protein can increase the possibility of immune escape, challenging the present COVID-19 prophylaxis and clinical interventions. Here, 3 receptor binding domain (RBD) specific monoclonal antibodies (mAbs), 58G6, 510A5 and 13G9, with high neutralizing potency blocking authentic SARS-CoV-2 virus display remarkable efficacy against authentic B.1.351 virus. Surprisingly, structural analysis has revealed that 58G6 and 13G9 both recognize the steric region S470-495 on the RBD, overlapping the E484K mutation presented in B.1.351. Also, 58G6 directly binds to another region S450-458 in the RBD. Significantly, 58G6 and 510A5 both demonstrate prophylactic efficacy against authentic SARS-CoV-2 and B.1.351 viruses in the transgenic mice expressing human ACE2 (hACE2), protecting weight loss and reducing virus loads. Together, we have evidenced 2 potent neutralizing Abs with unique mechanism targeting authentic SARS-CoV-2 mutants, which can be promising candidates to fulfill the urgent needs for the prolonged COVID-19 pandemic.

Legend

Protein

Chemical

Disease

Primary Citation of related structures