5W0K

Crystal structure of EBV gHgL/CL40/gp42 N-domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.242 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Inhibition of EBV-mediated membrane fusion by anti-gHgL antibodies.

Sathiyamoorthy, K.Jiang, J.Mohl, B.S.Chen, J.Zhou, Z.H.Longnecker, R.Jardetzky, T.S.

(2017) Proc. Natl. Acad. Sci. U.S.A. 114: E8703-E8710

  • DOI: 10.1073/pnas.1704661114

  • PubMed Abstract: 
  • Herpesvirus entry into cells requires the coordinated action of multiple virus envelope glycoproteins, including gH, gL, and gB. For EBV, the gp42 protein assembles into complexes with gHgL heterodimers and binds HLA class II to activate gB-mediated ...

    Herpesvirus entry into cells requires the coordinated action of multiple virus envelope glycoproteins, including gH, gL, and gB. For EBV, the gp42 protein assembles into complexes with gHgL heterodimers and binds HLA class II to activate gB-mediated membrane fusion with B cells. EBV tropism is dictated by gp42 levels in the virion, as it inhibits entry into epithelial cells while promoting entry into B cells. The gHgL and gB proteins are targets of neutralizing antibodies and potential candidates for subunit vaccine development, but our understanding of their neutralizing epitopes and the mechanisms of inhibition remain relatively unexplored. Here we studied the structures and mechanisms of two anti-gHgL antibodies, CL40 and CL59, that block membrane fusion with both B cells and epithelial cells. We determined the structures of the CL40 and CL59 complexes with gHgL using X-ray crystallography and EM to identify their epitope locations. CL59 binds to the C-terminal domain IV of gH, while CL40 binds to a site occupied by the gp42 receptor binding domain. CL40 binding to gHgL/gp42 complexes is not blocked by gp42 and does not interfere with gp42 binding to HLA class II, indicating that its ability to block membrane fusion with B cells represents a defect in gB activation. These data indicate that anti-gHgL neutralizing antibodies can block gHgL-mediated activation of gB through different surface epitopes and mechanisms.


    Organizational Affiliation

    Department of Structural Biology, Stanford University School of Medicine, Stanford, CA 94305.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Envelope glycoprotein H
A, C
660Epstein-Barr virus (strain B95-8)Mutation(s): 0 
Gene Names: gH
Find proteins for P03231 (Epstein-Barr virus (strain B95-8))
Go to UniProtKB:  P03231
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Envelope glycoprotein L
B, D
114Epstein-Barr virus (strain B95-8)Mutation(s): 0 
Gene Names: gL
Find proteins for P03212 (Epstein-Barr virus (strain B95-8))
Go to UniProtKB:  P03212
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
CL40 IgG heavy chain
H, E
217N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
CL40 IgG light chain
L, F
213N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
Glycoprotein 42
X, Y
35Epstein-Barr virus (strain B95-8)Mutation(s): 0 
Find proteins for P03205 (Epstein-Barr virus (strain B95-8))
Go to UniProtKB:  P03205
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.242 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 96.380α = 90.00
b = 133.130β = 90.00
c = 254.130γ = 90.00
Software Package:
Software NamePurpose
XSCALEdata scaling
XDSdata reduction
PHASERphasing
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious DiseasesUnited StatesAI119480
National Institutes of Health/National Institute Of Allergy and Infectious DiseasesUnited StatesAI076183
National Institutes of Health/National Cancer InstituteUnited StatesCA117794

Revision History 

  • Version 1.0: 2017-10-04
    Type: Initial release
  • Version 1.1: 2017-11-08
    Type: Database references