4DGY

Structure of the Hepatitis C virus envelope glycoprotein E2 antigenic region 412-423 bound to the broadly neutralizing antibody HCV1, C2 form


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.798 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.188 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural basis of hepatitis C virus neutralization by broadly neutralizing antibody HCV1.

Kong, L.Giang, E.Robbins, J.B.Stanfield, R.L.Burton, D.R.Wilson, I.A.Law, M.

(2012) Proc.Natl.Acad.Sci.USA 109: 9499-9504

  • DOI: 10.1073/pnas.1202924109
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Hepatitis C virus (HCV) infects more than 2% of the global population and is a leading cause of liver cirrhosis, hepatocellular carcinoma, and end-stage liver diseases. Circulating HCV is genetically diverse, and therefore a broadly effective vaccine ...

    Hepatitis C virus (HCV) infects more than 2% of the global population and is a leading cause of liver cirrhosis, hepatocellular carcinoma, and end-stage liver diseases. Circulating HCV is genetically diverse, and therefore a broadly effective vaccine must target conserved T- and B-cell epitopes of the virus. Human mAb HCV1 has broad neutralizing activity against HCV isolates from at least four major genotypes and protects in the chimpanzee model from primary HCV challenge. The antibody targets a conserved antigenic site (residues 412-423) on the virus E2 envelope glycoprotein. Two crystal structures of HCV1 Fab in complex with an epitope peptide at 1.8-Å resolution reveal that the epitope is a β-hairpin displaying a hydrophilic face and a hydrophobic face on opposing sides of the hairpin. The antibody predominantly interacts with E2 residues Leu(413) and Trp(420) on the hydrophobic face of the epitope, thus providing an explanation for how HCV isolates bearing mutations at Asn(415) on the same binding face escape neutralization by this antibody. The results provide structural information for a neutralizing epitope on the HCV E2 glycoprotein and should help guide rational design of HCV immunogens to elicit similar broadly neutralizing antibodies through vaccination.


    Organizational Affiliation

    Departments of Molecular Biology, International AIDS Vaccine Initiative Neutralizing Antibody Center, and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA 92037, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HCV1 Heavy Chain
H
226N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
HCV1 Light Chain
L
213N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
E2 peptide
A
13Hepatitis C virus genotype 1bMutation(s): 0 
Find proteins for P26663 (Hepatitis C virus genotype 1b)
Go to UniProtKB:  P26663
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
H
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
GOL
Query on GOL

Download SDF File 
Download CCD File 
H, L
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.798 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.188 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 141.099α = 90.00
b = 63.065β = 95.72
c = 69.300γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
Blu-Icedata collection
HKL-2000data reduction
PHENIXrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-05-23
    Type: Initial release
  • Version 1.1: 2012-06-06
    Type: Database references
  • Version 1.2: 2012-06-27
    Type: Database references