Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

 3D View: Structure | Electron Density | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 15.56 kDa 
• Atom Count: 1103 
• Residue Count: 121 
• Unique protein chains: 2

2PNX

The PHD finger of ING4 in complex with an H3K4Me3 histone peptide

• DOI: 10.2210/pdb2PNX/pdb

• Classification: GENE REGULATION
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2007-04-25 Released: 2008-04-15 
• Deposition Author(s): Champagne, K.S., Johnson, K., Kutateladze, T.G.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.211 
• R-Value Work: 0.199 

Literature

ING4 mediates crosstalk between histone H3 K4 trimethylation and H3 acetylation to attenuate cellular transformation

Hung, T., Binda, O., Champagne, K.S., Kuo, A.J., Johnson, K., Chang, H.Y., Simon, M.D., Kutateladze, T.G., Gozani, O.

(2009) Mol Cell 33: 248-256

• PubMed: 19187765 
• DOI: 10.1016/j.molcel.2008.12.016
• Primary Citation of Related Structures:  
  2PNX


• PubMed Abstract: 
  

Aberrations in chromatin dynamics play a fundamental role in tumorigenesis, yet relatively little is known of the molecular mechanisms linking histone lysine methylation to neoplastic disease. ING4 (Inhibitor of Growth 4) is a native subunit of an HBO1 histone acetyltransferase (HAT) complex and a tumor suppressor protein. Here we show a critical role for specific recognition of histone H3 trimethylated at lysine 4 (H3K4me3) by the ING4 PHD finger in mediating ING4 gene expression and tumor suppressor functions. The interaction between ING4 and H3K4me3 augments HBO1 acetylation activity on H3 tails and drives H3 acetylation at ING4 target promoters. Further, ING4 facilitates apoptosis in response to genotoxic stress and inhibits anchorage-independent cell growth, and these functions depend on ING4 interactions with H3K4me3. Together, our results demonstrate a mechanism for brokering crosstalk between H3K4 methylation and H3 acetylation and reveal a molecular link between chromatin modulation and tumor suppressor mechanisms.

---

Organizational Affiliation: 

Department of Biology, Stanford University, Stanford, CA 94305, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Inhibitor of growth protein 4	A, C	55	Homo sapiens	Mutation(s): 0  Gene Names: ING4, My036
Find proteins for Q9UNL4 (Homo sapiens) Explore Q9UNL4  Go to UniProtKB:  Q9UNL4
NIH Common Fund Data Resources
PHAROS:  Q9UNL4 GTEx:  ENSG00000111653

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
H3K4Me3 peptide	B, D	12	N/A	Mutation(s): 0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ZN	A, C	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
M3L	B,D	L-PEPTIDE LINKING	C9 H21 N2 O2		LYS

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.211 
• R-Value Work: 0.199 
• Space Group: P 4₃

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 68.16	α = 90
b = 68.16	β = 90
c = 27.96	γ = 90

Software Package:

Software Name	Purpose
CrystalClear	data collection
SOLVE	phasing
CNS	refinement
d*TREK	data reduction
d*TREK	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2007-04-25 
• Released Date: 2008-04-15 
Deposition Author(s): Champagne, K.S., Johnson, K., Kutateladze, T.G.

Revision History 

• Version 1.0: 2008-04-15
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance