3L25

Crystal structure of Zaire Ebola VP35 interferon inhibitory domain bound to 8 bp dsRNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.169 
  • R-Value Observed: 0.171 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural basis for dsRNA recognition and interferon antagonism by Ebola VP35.

Leung, D.W.Prins, K.C.Borek, D.M.Farahbakhsh, M.Tufariello, J.M.Ramanan, P.Nix, J.C.Helgeson, L.A.Otwinowski, Z.Honzatko, R.B.Basler, C.F.Amarasinghe, G.K.

(2010) Nat Struct Mol Biol 17: 165-172

  • DOI: 10.1038/nsmb.1765
  • Primary Citation of Related Structures:  
    3L25, 3L26, 3L27, 3L28

  • PubMed Abstract: 
  • Ebola viral protein 35 (VP35), encoded by the highly pathogenic Ebola virus, facilitates host immune evasion by antagonizing antiviral signaling pathways, including those initiated by RIG-I-like receptors. Here we report the crystal structure of the Ebola VP35 interferon inhibitory domain (IID) bound to short double-stranded RNA (dsRNA), which together with in vivo results reveals how VP35-dsRNA interactions contribute to immune evasion ...

    Ebola viral protein 35 (VP35), encoded by the highly pathogenic Ebola virus, facilitates host immune evasion by antagonizing antiviral signaling pathways, including those initiated by RIG-I-like receptors. Here we report the crystal structure of the Ebola VP35 interferon inhibitory domain (IID) bound to short double-stranded RNA (dsRNA), which together with in vivo results reveals how VP35-dsRNA interactions contribute to immune evasion. Conserved basic residues in VP35 IID recognize the dsRNA backbone, whereas the dsRNA blunt ends are 'end-capped' by a pocket of hydrophobic residues that mimic RIG-I-like receptor recognition of blunt-end dsRNA. Residues critical for RNA binding are also important for interferon inhibition in vivo but not for viral polymerase cofactor function of VP35. These results suggest that simultaneous recognition of dsRNA backbone and blunt ends provides a mechanism by which Ebola VP35 antagonizes host dsRNA sensors and immune responses.


    Related Citations: 
    • Preliminary X-ray studies of the Ebola VP35 IFN inhibitory domain bound to double stranded RNA
      Leung, D.W., Prins, K.C., Borek, D.M., Farahbakhsh, M., Tufariello, J.M., Ramanan, P., Nix, J.C., Helgeson, L.A., Otwinowski, Z., Honzatko, R.B., Basler, C.F., Amarasinghe, G.K.
      () To be published --: --

    Organizational Affiliation

    Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, Iowa, USA.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Polymerase cofactor VP35A, B, D, E129Ebola virus - Mayinga, Zaire, 1976Mutation(s): 0 
Gene Names: VP35
UniProt
Find proteins for Q05127 (Zaire ebolavirus (strain Mayinga-76))
Explore Q05127 
Go to UniProtKB:  Q05127
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ05127
Protein Feature View
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  • Reference Sequence

Find similar nucleic acids by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChainsLengthOrganismImage
RNA (5'-R(*CP*GP*CP*AP*UP*GP*CP*G)-3')C, F8N/A
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download Ideal Coordinates CCD File 
J [auth A]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
FMT
Query on FMT

Download Ideal Coordinates CCD File 
CA [auth C],
DA [auth C],
GA [auth D],
HA [auth D],
IA [auth D],
CA [auth C],
DA [auth C],
GA [auth D],
HA [auth D],
IA [auth D],
JA [auth D],
K [auth A],
KA [auth D],
L [auth A],
M [auth A],
MA [auth E],
N [auth A],
NA [auth E],
O [auth A],
OA [auth E],
PA [auth E],
RA [auth F],
S [auth B],
T [auth B],
U [auth B],
V [auth B],
W [auth B],
X [auth B],
Y [auth B]
FORMIC ACID
C H2 O2
BDAGIHXWWSANSR-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL

Download Ideal Coordinates CCD File 
EA [auth D],
H [auth A],
LA [auth E],
P [auth B]
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
MG
Query on MG

Download Ideal Coordinates CCD File 
G [auth A]MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
NA
Query on NA

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AA [auth C],
BA [auth C],
FA [auth D],
I [auth A],
Q [auth B],
AA [auth C],
BA [auth C],
FA [auth D],
I [auth A],
Q [auth B],
QA [auth F],
R [auth B],
Z [auth C]
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.169 
  • R-Value Observed: 0.171 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 78.947α = 90
b = 84.571β = 90
c = 89.316γ = 90
Software Package:
Software NamePurpose
HKL-3000data collection
PHASERphasing
REFMACrefinement
HKL-3000data reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2010-01-26
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance