6F6I

CRYSTAL STRUCTURE OF EBOLAVIRUS GLYCOPROTEIN IN COMPLEX WITH PAROXETINE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.193 

wwPDB Validation 3D Report Full Report



Literature

Target Identification and Mode of Action of Four Chemically Divergent Drugs against Ebolavirus Infection.

Ren, J.Zhao, Y.Fry, E.E.Stuart, D.I.

(2018) J Med Chem 61: 724-733

  • DOI: 10.1021/acs.jmedchem.7b01249
  • Primary Citation of Related Structures:  
    6F5U, 6F6N, 6F6S, 6F6I

  • PubMed Abstract: 
  • Here, we show that four chemically divergent approved drugs reported to inhibit Ebolavirus infection, benztropine, bepridil, paroxetine and sertraline, directly interact with the Ebolavirus glycoprotein. Binding of these drugs destabilizes the protein, suggesting that this may be the mechanism of inhibition, as reported for the anticancer drug toremifene and the painkiller ibuprofen, which bind in the same large cavity on the glycoprotein ...

    Here, we show that four chemically divergent approved drugs reported to inhibit Ebolavirus infection, benztropine, bepridil, paroxetine and sertraline, directly interact with the Ebolavirus glycoprotein. Binding of these drugs destabilizes the protein, suggesting that this may be the mechanism of inhibition, as reported for the anticancer drug toremifene and the painkiller ibuprofen, which bind in the same large cavity on the glycoprotein. Crystal structures show that the position of binding and the mode of interaction within the pocket vary significantly between these compounds. The binding constants (K d ) determined by thermal shift assay correlate with the protein-inhibitor interactions as well as with the antiviral activities determined by virus cell entry assays, supporting the hypothesis that these drugs inhibit viral entry by binding the glycoprotein and destabilizing the prefusion conformation. Details of the protein-inhibitor interactions of these complexes and their relation with binding affinity may facilitate the design of more potent inhibitors.


    Related Citations: 
    • Toremifene interacts with and destabilizes the Ebola virus glycoprotein.
      Zhao, Y., Ren, J., Harlos, K., Jones, D.M., Zeltina, A., Bowden, T.A., Padilla-Parra, S., Fry, E.E., Stuart, D.I.
      (2016) Nature 535: 169

    Organizational Affiliation

    Diamond Light Source Ltd. , Harwell Science & Innovation Campus, Didcot, OX11 0DE, U.K.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Envelope glycoprotein,GP,GP1A330Ebola virusMutation(s): 1 
Gene Names: GPDH33_45402gpGP
Find proteins for Q05320 (Zaire ebolavirus (strain Mayinga-76))
Explore Q05320 
Go to UniProtKB:  Q05320
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Envelope glycoproteinB168Ebola virusMutation(s): 1 
Gene Names: 
Find proteins for Q05320 (Zaire ebolavirus (strain Mayinga-76))
Explore Q05320 
Go to UniProtKB:  Q05320
Protein Feature View
Expand
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Oligosaccharides

Help

Entity ID: 3
MoleculeChainsChain Length2D Diagram Glycosylation
alpha-D-mannopyranose-(1-6)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
C
4 N-Glycosylation
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
8PR
Query on 8PR

Download CCD File 
A
Paroxetine
C19 H20 F N O3
AHOUBRCZNHFOSL-YOEHRIQHSA-N
 Ligand Interaction
NAG
Query on NAG

Download CCD File 
A
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
GOL
Query on GOL

Download CCD File 
A, B
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
DMS
Query on DMS

Download CCD File 
A
DIMETHYL SULFOXIDE
C2 H6 O S
IAZDPXIOMUYVGZ-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
8PRKd:  650000   nM  Binding MOAD
8PRKd:  650000   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.193 
  • Space Group: H 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 113.68α = 90
b = 113.68β = 90
c = 306.26γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
xia2data reduction
xia2data scaling
REFMACphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
UKUnited KingdomMR/N00065X/1

Revision History 

  • Version 1.0: 2018-01-03
    Type: Initial release
  • Version 1.1: 2018-01-24
    Changes: Database references
  • Version 1.2: 2018-02-21
    Changes: Database references
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Structure summary