5V2S

Crystal structure of glycoprotein B from Herpes Simplex Virus type I

  • Classification: VIRAL PROTEIN
  • Organism(s): Human alphaherpesvirus 1
  • Expression System: Spodoptera frugiperda
  • Mutation(s): No 

  • Deposited: 2017-03-06 Released: 2018-05-16 
  • Deposition Author(s): Cooper, R.S., Heldwein, E.E.
  • Funding Organization(s): National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID), National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS), Burroughs Welcome Fund

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.60 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.244 
  • R-Value Observed: 0.247 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural basis for membrane anchoring and fusion regulation of the herpes simplex virus fusogen gB.

Cooper, R.S.Georgieva, E.R.Borbat, P.P.Freed, J.H.Heldwein, E.E.

(2018) Nat Struct Mol Biol 25: 416-424

  • DOI: 10.1038/s41594-018-0060-6
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Viral fusogens merge viral and cell membranes during cell penetration. Their ectodomains drive fusion by undergoing large-scale refolding, but little is known about the functionally important regions located within or near the membrane. Here we repor ...

    Viral fusogens merge viral and cell membranes during cell penetration. Their ectodomains drive fusion by undergoing large-scale refolding, but little is known about the functionally important regions located within or near the membrane. Here we report the crystal structure of full-length glycoprotein B (gB), the fusogen from herpes simplex virus, complemented by electron spin resonance measurements. The membrane-proximal (MPR), transmembrane (TMD), and cytoplasmic (CTD) domains form a uniquely folded trimeric pedestal beneath the ectodomain, which balances dynamic flexibility with extensive, stabilizing membrane interactions. The postfusion conformation of the ectodomain suggests that the CTD likewise adopted the postfusion form. However, hyperfusogenic mutations, which destabilize the prefusion state of gB, target key interfaces and structural motifs that reinforce the observed CTD structure. Thus, a similar CTD structure must stabilize gB in its prefusion state. Our data suggest a model for how this dynamic, membrane-dependent 'clamp' controls the fusogenic refolding of gB.


    Organizational Affiliation

    Department of Molecular Biology and Microbiology, Tufts University School of Medicine, Boston, MA, USA. katya.heldwein@tufts.edu.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Envelope glycoprotein B
A
841Human alphaherpesvirus 1Mutation(s): 0 
Gene Names: UL27HHV1gp041gB
Find proteins for A1Z0P7 (Human herpesvirus 1)
Go to UniProtKB:  A1Z0P7
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download CCD File 
A
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.60 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.244 
  • R-Value Observed: 0.247 
  • Space Group: P 3 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 118.66α = 90
b = 118.66β = 90
c = 216.464γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United States1R21AI107171
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United States1F32GM115060
Burroughs Welcome FundUnited StatesInvestigators in the Pathogenesis of Infectious Disease Award

Revision History 

  • Version 1.0: 2018-05-16
    Type: Initial release
  • Version 1.1: 2018-10-31
    Changes: Data collection, Database references
  • Version 1.2: 2019-12-11
    Changes: Author supporting evidence