Biological Assembly 1  

 3D View: Structure | Electron Density

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A1BC 

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

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 49.08 kDa 
• Atom Count: 3825 
• Residue Count: 440 
• Unique protein chains: 3

6BZY

Structure of the Hepatitis C virus envelope glycoprotein E2 antigenic region 412-423 bound to the 22D11 broadly neutralizing antibody

• DOI: 10.2210/pdb6BZY/pdb

• Classification: IMMUNE SYSTEM
• Organism(s): Mus musculus, Hepacivirus C
• Expression System: Homo sapiens
• Mutation(s): No 


• Deposited: 2017-12-26 Released: 2018-06-20 
• Deposition Author(s): Tzarum, N., Alemn, F., Wilson, I.A., Law, M.
• Funding Organization(s): National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.218 
• R-Value Work: 0.188 
• R-Value Observed: 0.190 

Literature

Immunogenetic and structural analysis of a class of HCV broadly neutralizing antibodies and their precursors.

Aleman, F., Tzarum, N., Kong, L., Nagy, K., Zhu, J., Wilson, I.A., Law, M.

(2018) Proc Natl Acad Sci U S A 115: 7569-7574

• PubMed: 29954862 
• DOI: 10.1073/pnas.1802378115
• Structures With Same Primary Citation


• PubMed Abstract: 
  

Elicitation of broadly neutralizing antibodies (bnAbs) is a leading strategy in rational vaccine design against antigenically diverse pathogens. Here, we studied a panel of monoclonal antibodies (mAbs) from mice immunized with the hepatitis C virus (HCV) envelope glycoproteins E1E2. Six of the mAbs recognize the conserved E2 antigenic site 412-423 (AS412) and cross-neutralize diverse HCV genotypes. Immunogenetic and structural analysis revealed that the antibodies originated from two different germline (GL) precursors and bind AS412 in a β-hairpin conformation. Intriguingly, the anti-HCV activity of one antibody lineage is associated with maturation of the light chain (LC), whereas the other lineage is dependent on heavy-chain (HC) maturation. Crystal structures of GL precursors of the LC-dependent lineage in complex with AS412 offer critical insights into the maturation process of bnAbs to HCV, providing a scientific foundation for utilizing the mouse model to study AS412-targeting vaccine candidates.

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Organizational Affiliation: 

Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA 92037; [e-mail] [e-mail].

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
22D11 Heavy Chain	H	220	Mus musculus	Mutation(s): 0

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
22D11 Light Chain	L	218	Mus musculus	Mutation(s): 0

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details
E2 AS412 peptide	B	13	Hepacivirus C	Mutation(s): 0  EC: 3.4.22 (UniProt), 3.4.21.98 (UniProt), 3.6.1.15 (UniProt), 3.6.4.13 (UniProt), 2.7.7.48 (UniProt)
Find proteins for P27958 (Hepatitis C virus genotype 1a (isolate H)) Explore P27958  Go to UniProtKB:  P27958

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.218 
• R-Value Work: 0.188 
• R-Value Observed: 0.190 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 46.429	α = 90
b = 79.85	β = 90
c = 126.936	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
PHASER	phasing
Blu-Ice	data collection

Structure Validation

Entry History & Funding Information

Deposition Data

• Deposited Date: 2017-12-26 
• Released Date: 2018-06-20 
Deposition Author(s): Tzarum, N., Alemn, F., Wilson, I.A., Law, M.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	AI106005
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	AI123365

Revision History 

• Version 1.0: 2018-06-20
  Type: Initial release
  
• Version 1.1: 2018-07-11
  Changes: Data collection, Database references
• Version 1.2: 2018-07-25
  Changes: Data collection, Database references
• Version 1.3: 2019-02-20
  Changes: Author supporting evidence, Data collection
• Version 1.4: 2019-12-18
  Changes: Author supporting evidence