5UL6

The molecular mechanisms by which NS1 of the 1918 Spanish influenza A virus hijack host protein-protein interactions


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.187 
  • R-Value Work: 0.167 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

The Molecular Mechanisms Underlying the Hijack of Host Proteins by the 1918 Spanish Influenza Virus.

Shen, Q.Zeng, D.Zhao, B.Bhatt, V.S.Li, P.Cho, J.H.

(2017) ACS Chem. Biol. 12: 1199-1203

  • DOI: 10.1021/acschembio.7b00168

  • PubMed Abstract: 
  • The 1918 Spanish influenza A virus (IAV) caused one of the most serious pandemics in history. The nonstructural protein 1 (NS1) of the 1918 IAV hijacks the interaction between human CrkII and JNK1. Little is, however, known about its molecular mechan ...

    The 1918 Spanish influenza A virus (IAV) caused one of the most serious pandemics in history. The nonstructural protein 1 (NS1) of the 1918 IAV hijacks the interaction between human CrkII and JNK1. Little is, however, known about its molecular mechanism. Here, we performed X-ray crystallography, NMR relaxation dispersion experiment, and fluorescence spectroscopy to determine the structural, kinetic, and thermodynamic mechanisms underlying the hijacking of CrkII by 1918 IAV NS1. We observed that the interaction between a proline-rich motif in NS1 and the N-terminal SH3 domain of CrkII displays strikingly rapid kinetics and exceptionally high affinity with 100-fold faster k on and 3300-fold lower K d compared to those for the CrkII-JNK1 interaction. These results provide molecular insight into the mechanism by which 1918 IAV NS1 hijacks CrkII and disrupts its interactions with critical cellular signaling proteins.


    Organizational Affiliation

    Department of Biochemistry and Biophysics, Texas A&M University , College Station, Texas 77843, United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Adapter molecule crk
A
58Homo sapiensMutation(s): 0 
Gene Names: CRK
Find proteins for P46108 (Homo sapiens)
Go to Gene View: CRK
Go to UniProtKB:  P46108
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Proline-rich motif of nonstructural protein 1 of influenza a virus
M
15Influenza A virus (strain A/Brevig Mission/1/1918 H1N1)Mutation(s): 0 
Gene Names: NS
Find proteins for Q99AU3 (Influenza A virus (strain A/Brevig Mission/1/1918 H1N1))
Go to UniProtKB:  Q99AU3
Small Molecules
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
NH2
Query on NH2
M
NON-POLYMERH2 N

--

ACE
Query on ACE
M
NON-POLYMERC2 H4 O

--

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.187 
  • R-Value Work: 0.167 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 27.650α = 90.00
b = 39.260β = 98.43
c = 29.030γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
SCALEPACKdata scaling
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-08-09
    Type: Initial release