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 

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Ligand Structure Quality Assessment 


This is version 2.0 of the entry. See complete history. 


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: GP, DH33_45402gpGP
UniProt
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: 
UniProt
Find proteins for Q05320 (Zaire ebolavirus (strain Mayinga-76))
Explore Q05320 
Go to UniProtKB:  Q05320
Protein Feature View
Expand
  • Reference Sequence
Oligosaccharides

Help

Entity ID: 3
MoleculeChainsChain Length2D DiagramGlycosylation3D Interactions
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-glucopyranoseC4N-Glycosylation Oligosaccharides Interaction
Glycosylation Resources
GlyTouCan:  G22573RC
GlyCosmos:  G22573RC
GlyGen:  G22573RC
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
8PR (Subject of Investigation/LOI)
Query on 8PR
Download Ideal Coordinates CCD File 
 L [auth A]Paroxetine
C19 H20 F N O3
AHOUBRCZNHFOSL-YOEHRIQHSA-N		 Ligand Interaction
NAG (Subject of Investigation/LOI)
Query on NAG
Download Ideal Coordinates CCD File 
 D [auth A], E [auth A], F [auth A], G [auth A]2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N		 Ligand Interaction
GOL
Query on GOL
Download Ideal Coordinates CCD File 
 I [auth A], J [auth A], K [auth A], M [auth B], N [auth B]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N		 Ligand Interaction
DMS
Query on DMS
Download Ideal Coordinates CCD File 
 H [auth A]DIMETHYL SULFOXIDE
C2 H6 O S
IAZDPXIOMUYVGZ-UHFFFAOYSA-N		 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
8PR Binding MOAD:  6F6I Kd: 6.50e+5 (nM) from 1 assay(s)
BindingDB:  6F6I Kd: 6.50e+5 (nM) from 1 assay(s)
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

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
UKUnited KingdomMR/N00065X/1

Revision History  (Full details and data files)

  • 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