Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A1B1C1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 73.78 kDa 
• Atom Count: 4953 
• Residue Count: 594 
• Unique protein chains: 3

7JMP

Crystal structure of SARS-CoV-2 receptor binding domain in complex with neutralizing antibody COVA2-39

• DOI: 10.2210/pdb7JMP/pdb

• Classification: Viral Protein/IMMUNE SYSTEM
• Organism(s): Severe acute respiratory syndrome coronavirus 2, Homo sapiens
• Expression System: Trichoplusia ni, Mus musculus
• Mutation(s): No 


• Deposited: 2020-08-02 Released: 2020-08-26 
• Deposition Author(s): Wu, N.C., Yuan, M., Liu, H., Zhu, X., Wilson, I.A.
• Funding Organization(s): National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID), Bill & Melinda Gates Foundation

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.71 Å
• R-Value Free: 0.209 
• R-Value Work: 0.177 
• R-Value Observed: 0.178 

Literature

An alternative binding mode of IGHV3-53 antibodies to the SARS-CoV-2 receptor binding domain.

Wu, N.C., Yuan, M., Liu, H., Lee, C.D., Zhu, X., Bangaru, S., Torres, J.L., Caniels, T.G., Brouwer, P.J.M., van Gils, M.J., Sanders, R.W., Ward, A.B., Wilson, I.A.

(2020) Biorxiv 

• PubMed: 32743580 
• DOI: 10.1101/2020.07.26.222232
• Primary Citation of Related Structures:  
  7JMP, 7JMO


• PubMed Abstract: 
  

IGHV3-53-encoded neutralizing antibodies are commonly elicited during SARS-CoV-2 infection and target the receptor-binding domain (RBD) of the spike (S) protein. Such IGHV3-53 antibodies generally have a short CDR H3 due to structural constraints in binding the RBD (mode A). However, a small subset of IGHV3-53 antibodies to the RBD contain a longer CDR H3. Crystal structures of two IGHV3-53 neutralizing antibodies here demonstrate that a longer CDR H3 can be accommodated in a different binding mode (mode B). These two classes of IGHV3-53 antibodies both target the ACE2 receptor binding site, but with very different angles of approach and molecular interactions. Overall, these findings emphasize the versatility of IGHV3-53 in this common antibody response to SARS-CoV-2, where conserved IGHV3-53 germline-encoded features can be combined with very different CDR H3 lengths and light chains for SARS-CoV-2 RBD recognition and virus neutralization.

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Organizational Affiliation: 

Structural Biology Program, Memorial Sloan-Kettering Cancer Center, New York, NY 10021, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Spike protein S1	A	231	Severe acute respiratory syndrome coronavirus 2	Mutation(s): 0  Gene Names: S, 2
Find proteins for P0DTC2 (Severe acute respiratory syndrome coronavirus 2) Explore P0DTC2  Go to UniProtKB:  P0DTC2

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
COVA2-39 heavy chain	H	232	Homo sapiens	Mutation(s): 0

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
COVA2-39 light chain	L	216	Homo sapiens	Mutation(s): 0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	A	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.71 Å
• R-Value Free: 0.209 
• R-Value Work: 0.177 
• R-Value Observed: 0.178 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 68.905	α = 90
b = 80.445	β = 104.88
c = 72.006	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-2000	data scaling
PDB_EXTRACT	data extraction
HKL-2000	data reduction
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Deposited Date: 2020-08-02 
• Released Date: 2020-08-26 
Deposition Author(s): Wu, N.C., Yuan, M., Liu, H., Zhu, X., Wilson, I.A.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	AI139445
Bill & Melinda Gates Foundation		OPP1170236
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)		AI110657

Revision History 

• Version 1.0: 2020-08-26
  Type: Initial release