1AHS

CRYSTAL STRUCTURE OF THE TOP DOMAIN OF AFRICAN HORSE SICKNESS VIRUS VP7


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Work: 0.213 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of the top domain of African horse sickness virus VP7: comparisons with bluetongue virus VP7.

Basak, A.K.Gouet, P.Grimes, J.Roy, P.Stuart, D.

(1996) J.Virol. 70: 3797-3806


  • PubMed Abstract: 
  • The baculovirus-expressed core protein VP7 of African horse sickness virus serotype 4 (AHSV-4) has been purified to homogeneity and crystallized in the presence of 2.8 M urea. The X-ray structure has been solved to a 2.3-Angstroms (1 Angstrom = 0.1 n ...

    The baculovirus-expressed core protein VP7 of African horse sickness virus serotype 4 (AHSV-4) has been purified to homogeneity and crystallized in the presence of 2.8 M urea. The X-ray structure has been solved to a 2.3-Angstroms (1 Angstrom = 0.1 nm) resolution with an Rfactor of 19.8%. The structure of AHSV VP7 reveals that during crystallization, the two-domain protein is cleaved and only the top domain remains. A similar problem was encountered previously with bluetongue virus (BTV) VP7 (whose structure has been reported), showing that the connections between the top and the bottom domains are rather weak for these two distinct orbiviruses. The top domains of both BTV and AHSV VP7 are trimeric and structurally very similar. The electron density maps show that they both possess an extra electron density feature along their molecular threefold axes, which is most likely due to an unidentified ion. The characteristics of the molecular surface of BTV and AHSV VP7 suggest why AHSV VP7 is much less soluble than BTV VP7 and indicate the possibility of attachment to the cell via attachment of an Arg-Gly-Asp (RGD) motif in the top domain of VP7 to a cellular integrin for both of these orbiviruses.


    Related Citations: 
    • The Crystal Structure of Bluetongue Virus Vp7
      Grimes, J.,Basak, A.K.,Roy, P.,Stuart, D.
      (1995) Nature 373: 167


    Organizational Affiliation

    The Laboratory of Molecular Biophysics, University of Oxford, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
AFRICAN HORSE SICKNESS VIRUS (SEROTYPE 4) VP7
A, B, C
126African horse sickness virus 4Gene Names: S7
Find proteins for P36325 (African horse sickness virus 4)
Go to UniProtKB:  P36325
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Work: 0.213 
  • Space Group: I 4
Unit Cell:
Length (Å)Angle (°)
a = 157.200α = 90.00
b = 157.200β = 90.00
c = 57.700γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
DENZOdata reduction
X-PLORmodel building
X-PLORphasing
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 1996-03-18 
  • Released Date: 1996-11-08 
  • Deposition Author(s): Stuart, D., Gouet, P.

Revision History 

  • Version 1.0: 1996-11-08
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance