4O46

14-3-3-gamma in complex with influenza NS1 C-terminal tail phosphorylated at S228


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.226 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural basis for histone mimicry and hijacking of host proteins by influenza virus protein NS1.

Qin, S.Liu, Y.Tempel, W.Eram, M.S.Bian, C.Liu, K.Senisterra, G.Crombet, L.Vedadi, M.Min, J.

(2014) Nat Commun 5: 3952-3952

  • DOI: 10.1038/ncomms4952
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Pathogens can interfere with vital biological processes of their host by mimicking host proteins. The NS1 protein of the influenza A H3N2 subtype possesses a histone H3K4-like sequence at its carboxyl terminus and has been reported to use this mimic ...

    Pathogens can interfere with vital biological processes of their host by mimicking host proteins. The NS1 protein of the influenza A H3N2 subtype possesses a histone H3K4-like sequence at its carboxyl terminus and has been reported to use this mimic to hijack host proteins. However, this mimic lacks a free N-terminus that is essential for binding to many known H3K4 readers. Here we show that the double chromodomains of CHD1 adopt an 'open pocket' to interact with the free N-terminal amine of H3K4, and the open pocket permits the NS1 mimic to bind in a distinct conformation. We also explored the possibility that NS1 hijacks other cellular proteins and found that the NS1 mimic has access to only a subset of chromatin-associated factors, such as WDR5. Moreover, methylation of the NS1 mimic can not be reversed by the H3K4 demethylase LSD1. Overall, we thus conclude that the NS1 mimic is an imperfect histone mimic.


    Organizational Affiliation

    1] Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Science, Central China Normal University, Wuhan 430079, PR China [2] Structural Genomics Consortium, University of Toronto, 101 College Street, Toronto, Ontario, Canada M5G 1L7 [3].




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
14-3-3 protein gamma
A, B, C, D, E, F
256Homo sapiensMutation(s): 0 
Gene Names: YWHAG
Find proteins for P61981 (Homo sapiens)
Go to Gene View: YWHAG
Go to UniProtKB:  P61981
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Nonstructural protein 1
G, H, I, J, K, L
15Influenza A virus H3N2Mutation(s): 0 
Gene Names: NS
Find proteins for Q9YP60 (Influenza A virus H3N2)
Go to UniProtKB:  Q9YP60
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Unidentified polymer
M, N, O, V
24N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
UNX
Query on UNX

Download SDF File 
Download CCD File 
A, B, C, D, E, F
UNKNOWN ATOM OR ION
X
*
 Ligand Interaction
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP
G, H, I, J, K, L
L-PEPTIDE LINKINGC3 H8 N O6 PSER
UNK
Query on UNK
M, N, O, V
L-PEPTIDE LINKINGC4 H9 N O2

--

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.226 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 121.829α = 90.00
b = 121.829β = 90.00
c = 314.221γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
SCALAdata scaling
XDSdata reduction
BUSTER-TNTrefinement
PDB_EXTRACTdata extraction
BUSTERrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-04-30
    Type: Initial release
  • Version 1.1: 2014-06-04
    Type: Database references