4D9O

Structure of ebolavirus protein VP24 from Reston


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.186 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

The ebola virus interferon antagonist VP24 directly binds STAT1 and has a novel, pyramidal fold

Zhang, A.P.P.Bornholdt, Z.A.Liu, T.Abelson, D.M.Lee, D.E.Li, S.Woods Jr., V.L.Saphire, E.O.

(2012) Plos Pathog. 8: e1002550-e1002550

  • DOI: 10.1371/journal.ppat.1002550
  • Primary Citation of Related Structures:  3VNE, 3VNF

  • PubMed Abstract: 
  • Ebolaviruses cause hemorrhagic fever with up to 90% lethality and in fatal cases, are characterized by early suppression of the host innate immune system. One of the proteins likely responsible for this effect is VP24. VP24 is known to antagonize int ...

    Ebolaviruses cause hemorrhagic fever with up to 90% lethality and in fatal cases, are characterized by early suppression of the host innate immune system. One of the proteins likely responsible for this effect is VP24. VP24 is known to antagonize interferon signaling by binding host karyopherin α proteins, thereby preventing them from transporting the tyrosine-phosphorylated transcription factor STAT1 to the nucleus. Here, we report that VP24 binds STAT1 directly, suggesting that VP24 can suppress at least two distinct branches of the interferon pathway. Here, we also report the first crystal structures of VP24, derived from different species of ebolavirus that are pathogenic (Sudan) and nonpathogenic to humans (Reston). These structures reveal that VP24 has a novel, pyramidal fold. A site on a particular face of the pyramid exhibits reduced solvent exchange when in complex with STAT1. This site is above two highly conserved pockets in VP24 that contain key residues previously implicated in virulence. These crystal structures and accompanying biochemical analysis map differences between pathogenic and nonpathogenic viruses, offer templates for drug design, and provide the three-dimensional framework necessary for biological dissection of the many functions of VP24 in the virus life cycle.


    Organizational Affiliation

    Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, California, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Membrane-associated protein VP24
A, B
236Reston ebolavirus (strain Philippines-96)Gene Names: VP24
Find proteins for Q91DD5 (Reston ebolavirus (strain Philippines-96))
Go to UniProtKB:  Q91DD5
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.186 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 38.438α = 90.00
b = 103.890β = 93.94
c = 59.773γ = 90.00
Software Package:
Software NamePurpose
Auto-Rickshawphasing
PHENIXrefinement
HKL-2000data scaling
PDB_EXTRACTdata extraction
HKL-2000data reduction
HKL-2000data collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2012-01-11 
  • Released Date: 2012-04-18 
  • Deposition Author(s): Zhang, A.P.P.

Revision History 

  • Version 1.0: 2012-04-18
    Type: Initial release