5FZ2

Natively membrane-anchored full-length Herpes simplex virus 1 glycoprotein B


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 23 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: TOMOGRAPHY 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Two Distinct Trimeric Conformations of Natively Membrane-Anchored Full-Length Herpes Simplex Virus 1 Glycoprotein B.

Zeev-Ben-Mordehai, T.Vasishtan, D.Hernandez Duran, A.Vollmer, B.White, P.Prasad Pandurangan, A.Siebert, C.A.Topf, M.Grunewald, K.

(2016) Proc.Natl.Acad.Sci.USA 113: 4176

  • DOI: 10.1073/pnas.1523234113

  • PubMed Abstract: 
  • Many viruses are enveloped by a lipid bilayer acquired during assembly, which is typically studded with one or two types of glycoproteins. These viral surface proteins act as the primary interface between the virus and the host. Entry of enveloped vi ...

    Many viruses are enveloped by a lipid bilayer acquired during assembly, which is typically studded with one or two types of glycoproteins. These viral surface proteins act as the primary interface between the virus and the host. Entry of enveloped viruses relies on specialized fusogen proteins to help merge the virus membrane with the host membrane. In the multicomponent herpesvirus fusion machinery, glycoprotein B (gB) acts as this fusogen. Although the structure of the gB ectodomain postfusion conformation has been determined, any other conformations (e.g., prefusion, intermediate conformations) have so far remained elusive, thus restricting efforts to develop antiviral treatments and prophylactic vaccines. Here, we have characterized the full-length herpes simplex virus 1 gB in a native membrane by displaying it on cell-derived vesicles and using electron cryotomography. Alongside the known postfusion conformation, a novel one was identified. Its structure, in the context of the membrane, was determined by subvolume averaging and found to be trimeric like the postfusion conformation, but appeared more condensed. Hierarchical constrained density-fitting of domains unexpectedly revealed the fusion loops in this conformation to be apart and pointing away from the anchoring membrane. This vital observation is a substantial step forward in understanding the complex herpesvirus fusion mechanism, and opens up new opportunities for more targeted intervention of herpesvirus entry.


    Organizational Affiliation

    Oxford Particle Imaging Centre, Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, United Kingdom;,Oxford Particle Imaging Centre, Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, United Kingdom; Institute of Structural and Molecular Biology, Department of Biological Sciences, Birkbeck College, University of London, London WC1E 7HX, United Kingdom.,Institute of Structural and Molecular Biology, Department of Biological Sciences, Birkbeck College, University of London, London WC1E 7HX, United Kingdom.,Oxford Particle Imaging Centre, Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, United Kingdom; kay@strubi.ox.ac.uk.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ENVELOPE GLYCOPROTEIN B
A, B, C
904Human herpesvirus 1 (strain KOS)Mutation(s): 0 
Gene Names: gB
Find proteins for P06437 (Human herpesvirus 1 (strain KOS))
Go to UniProtKB:  P06437
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 23 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: TOMOGRAPHY 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-03-23
    Type: Initial release
  • Version 1.1: 2016-04-13
    Type: Database references
  • Version 1.2: 2016-06-01
    Type: Other
  • Version 1.3: 2016-06-29
    Type: Database references
  • Version 1.4: 2017-08-02
    Type: Data collection