3KWG

X-ray structure of NS1 effector domain W187A mutant


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.21 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.187 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

X-ray structures of NS1 effector domain mutants.

Xia, S.Robertus, J.D.

(2010) Arch.Biochem.Biophys. 494: 198-204

  • DOI: 10.1016/j.abb.2009.12.008
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The influenza A virus nonstructural protein NS1 is a multifunctional dimeric protein that acts as a potent inhibitor of the host cellular antiviral state. The C-terminal effector domain of NS1 binds host proteins, including CPSF30, and is a target fo ...

    The influenza A virus nonstructural protein NS1 is a multifunctional dimeric protein that acts as a potent inhibitor of the host cellular antiviral state. The C-terminal effector domain of NS1 binds host proteins, including CPSF30, and is a target for the development of new antiviral drugs. Here we present crystallographic structures of two mutant effector domains, W187Y and W187A, of influenza A/Udorn/72 virus. Unlike wild-type, the mutants behave exclusively as monomers in solution based on gel filtration data and light scattering. The W187Y mutant is able to bind CPSF30 with a binding affinity close to the wild-type protein; that is, it retains a receptor site for aromatic ligands nearly identical to the wild-type. Therefore, this monomeric mutant protein could serve as a drug target for a high throughput inhibitor screening assays, since its binding pocket is unoccupied in solution and potentially more accessible to small molecule ligands.


    Organizational Affiliation

    Institute for Cellular and Molecular Biology, Department of Chemistry and Biochemistry, University of Texas, 1 University Station A5300, Austin, TX 78712, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Non-structural protein 1
A, B
141Influenza A virus (strain A/Udorn/307/1972 H3N2)Mutation(s): 1 
Gene Names: NS
Find proteins for P03495 (Influenza A virus (strain A/Udorn/307/1972 H3N2))
Go to UniProtKB:  P03495
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.21 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.187 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 47.784α = 90.00
b = 48.193β = 90.00
c = 154.687γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
AMoREphasing
REFMACrefinement
HKL-2000data reduction
MAR345dtbdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-02-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance