4AFL

The crystal structure of the ING4 dimerization domain reveals the functional organization of the ING family of chromatin binding proteins.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.27 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.207 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Crystal Structure of Inhibitor of Growth 4 (Ing4) Dimerization Domain Reveals Functional Organization of Ing Family of Chromatin-Binding Proteins.

Culurgioni, S.Munoz, I.G.Moreno, A.Palacios, A.Villate, M.Palmero, I.Montoya, G.Blanco, F.J.

(2012) J Biol Chem 287: 10876

  • DOI: 10.1074/jbc.M111.330001
  • Primary Citation of Related Structures:  
    4AFL

  • PubMed Abstract: 
  • The protein ING4 binds to histone H3 trimethylated at Lys-4 (H3K4me3) through its C-terminal plant homeodomain, thus recruiting the HBO1 histone acetyltransferase complex to target promoters. The structure of the plant homeodomain finger bound to an H3K4 ...

    The protein ING4 binds to histone H3 trimethylated at Lys-4 (H3K4me3) through its C-terminal plant homeodomain, thus recruiting the HBO1 histone acetyltransferase complex to target promoters. The structure of the plant homeodomain finger bound to an H3K4me3 peptide has been described, as well as the disorder and flexibility in the ING4 central region. We report the crystal structure of the ING4 N-terminal domain, which shows an antiparallel coiled-coil homodimer with each protomer folded into a helix-loop-helix structure. This arrangement suggests that ING4 can bind simultaneously two histone tails on the same or different nucleosomes. Dimerization has a direct impact on ING4 tumor suppressor activity because monomeric mutants lose the ability to induce apoptosis after genotoxic stress. Homology modeling based on the ING4 structure suggests that other ING dimers may also exist.


    Organizational Affiliation

    Structural Biology Unit, CIC bioGUNE, E-48160 Derio, Spain.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
INHIBITOR OF GROWTH PROTEIN 4 ABCDEF104Homo sapiensMutation(s): 0 
Gene Names: ING4My036
Find proteins for Q9UNL4 (Homo sapiens)
Explore Q9UNL4 
Go to UniProtKB:  Q9UNL4
NIH Common Fund Data Resources
PHAROS:  Q9UNL4
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A,B,C,D,E,FL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.27 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.207 
  • Space Group: C 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 128.45α = 90
b = 186.6β = 90
c = 62.22γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
SHELXphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-02-22
    Type: Initial release
  • Version 1.1: 2012-06-13
    Changes: Other
  • Version 1.2: 2012-07-11
    Changes: Other