2OS2

Crystal structure of JMJD2A complexed with histone H3 peptide trimethylated at Lys36


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.176 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structures of histone demethylase JMJD2A reveal basis for substrate specificity.

Ng, S.S.Kavanagh, K.L.McDonough, M.A.Butler, D.Pilka, E.S.Lienard, B.M.Bray, J.E.Savitsky, P.Gileadi, O.von Delft, F.Rose, N.R.Offer, J.Scheinost, J.C.Borowski, T.Sundstrom, M.Schofield, C.J.Oppermann, U.

(2007) Nature 448: 87-91

  • DOI: 10.1038/nature05971
  • Primary Citation of Related Structures:  
  • Also Cited By: 5LY2, 5LY1

  • PubMed Abstract: 
  • Post-translational histone modification has a fundamental role in chromatin biology and is proposed to constitute a 'histone code' in epigenetic regulation. Differential methylation of histone H3 and H4 lysyl residues regulates processes including he ...

    Post-translational histone modification has a fundamental role in chromatin biology and is proposed to constitute a 'histone code' in epigenetic regulation. Differential methylation of histone H3 and H4 lysyl residues regulates processes including heterochromatin formation, X-chromosome inactivation, genome imprinting, DNA repair and transcriptional regulation. The discovery of lysyl demethylases using flavin (amine oxidases) or Fe(II) and 2-oxoglutarate as cofactors (2OG oxygenases) has changed the view of methylation as a stable epigenetic marker. However, little is known about how the demethylases are selective for particular lysyl-containing sequences in specific methylation states, a key to understanding their functions. Here we reveal how human JMJD2A (jumonji domain containing 2A), which is selective towards tri- and dimethylated histone H3 lysyl residues 9 and 36 (H3K9me3/me2 and H3K36me3/me2), discriminates between methylation states and achieves sequence selectivity for H3K9. We report structures of JMJD2A-Ni(II)-Zn(II) inhibitor complexes bound to tri-, di- and monomethyl forms of H3K9 and the trimethyl form of H3K36. The structures reveal a lysyl-binding pocket in which substrates are bound in distinct bent conformations involving the Zn-binding site. We propose a mechanism for achieving methylation state selectivity involving the orientation of the substrate methyl groups towards a ferryl intermediate. The results suggest distinct recognition mechanisms in different demethylase subfamilies and provide a starting point to develop chemical tools for drug discovery and to study and dissect the complexity of reversible histone methylation and its role in chromatin biology.


    Organizational Affiliation

    Structural Genomics Consortium, Botnar Research Center, University of Oxford, Oxford OX3 7LD, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
JmjC domain-containing histone demethylation protein 3A
A, B
381Homo sapiensMutation(s): 0 
Gene Names: KDM4A (JHDM3A, JMJD2, JMJD2A, KIAA0677)
EC: 1.14.11.-
Find proteins for O75164 (Homo sapiens)
Go to Gene View: KDM4A
Go to UniProtKB:  O75164
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
histone 3 peptide
C, D
11N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
OGA
Query on OGA

Download SDF File 
Download CCD File 
A, B
N-OXALYLGLYCINE
C4 H5 N O5
BIMZLRFONYSTPT-UHFFFAOYSA-N
 Ligand Interaction
NI
Query on NI

Download SDF File 
Download CCD File 
A, B
NICKEL (II) ION
Ni
VEQPNABPJHWNSG-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
M3L
Query on M3L
C, D
L-PEPTIDE LINKINGC9 H21 N2 O2LYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.176 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 100.943α = 90.00
b = 148.886β = 90.00
c = 56.975γ = 90.00
Software Package:
Software NamePurpose
CCP4data scaling
MOSFLMdata reduction
REFMACrefinement
CrystalCleardata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Revision History 

  • Version 1.0: 2007-03-13
    Type: Initial release
  • Version 1.1: 2007-10-15
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Advisory, Refinement description, Version format compliance