Biological Assembly 1  

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 4017.65 
• Atom Count: 283 
• Residue Count: 36 
• Unique protein chains: 1

2KZQ

s34r Structure

• DOI: 10.2210/pdb2KZQ/pdb
• BMRB: 17011

• Classification: MEMBRANE PROTEIN
• Organism(s): Hepatitis C virus genotype 2a (isolate JFH-1)


• Deposited: 2010-06-21 Released: 2011-03-02 
• Deposition Author(s): Montserret, R., Dubuisson, J., Penin, F.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 36 
• Selection Criteria: structures with the least restraint violations 

Literature

Identification of new functional regions in hepatitis C virus envelope glycoprotein E2.

Albecka, A., Montserret, R., Krey, T., Tarr, A.W., Diesis, E., Ball, J.K., Descamps, V., Duverlie, G., Rey, F., Penin, F., Dubuisson, J.

(2011) J.Virol. 85: 1777-1792

• PubMed: 21147916 
• DOI: 10.1128/JVI.02170-10


• PubMed Abstract: 
  

Little is known about the structure of the envelope glycoproteins of hepatitis C virus (HCV). To identify new regions essential for the function of these glycoproteins, we generated HCV pseudoparticles (HCVpp) containing HCV envelope glycoproteins, E1 and E2, from different genotypes in order to detect intergenotypic incompatibilities between these two proteins. Several genotype combinations were nonfunctional for HCV entry. Of interest, a combination of E1 from genotype 2a and E2 from genotype 1a was nonfunctional in the HCVpp system. We therefore used this nonfunctional complex and the recently described structural model of E2 to identify new functional regions in E2 by exchanging protein regions between these two genotypes. The functionality of these chimeric envelope proteins in the HCVpp system and/or the cell-cultured infectious virus (HCVcc) was analyzed. We showed that the intergenotypic variable region (IgVR), hypervariable region 2 (HVR2), and another segment in domain II play a role in E1E2 assembly. We also demonstrated intradomain interactions within domain I. Importantly, we also identified a segment (amino acids [aa] 705 to 715 [segment 705-715]) in the stem region of E2, which is essential for HCVcc entry. Circular dichroism and nuclear magnetic resonance structural analyses of the synthetic peptide E2-SC containing this segment revealed the presence of a central amphipathic helix, which likely folds upon membrane binding. Due to its location in the stem region, segment 705-715 is likely involved in the reorganization of the glycoprotein complexes taking place during the fusion process. In conclusion, our study highlights new functional and structural regions in HCV envelope glycoprotein E2.

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Organizational Affiliation: 

Institut Pasteur de Lille, Center for Infection and Immunity of Lille, F-59019 Lille, France.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Envelope glycoprotein E2 peptide	A	36	Hepatitis C virus genotype 2a (isolate JFH-1)	Mutation(s): 0
Find proteins for Q99IB8 (Hepatitis C virus genotype 2a (isolate JFH-1)) Go to UniProtKB:  Q99IB8

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 36 
• Selection Criteria: structures with the least restraint violations 
• Olderado: 2KZQ Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2010-06-21 
• Released Date: 2011-03-02 
• Deposition Author(s): Montserret, R., Dubuisson, J., Penin, F.

Revision History 

• Version 1.0: 2011-03-02
  Type: Initial release
• Version 1.1: 2011-07-13
  Type: Version format compliance