4UC4

Crystal structure of hybrid tudor domain of human lysine demethylase KDM4B


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5612 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.197 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Reader domain specificity and lysine demethylase-4 family function.

Su, Z.Wang, F.Lee, J.H.Stephens, K.E.Papazyan, R.Voronina, E.Krautkramer, K.A.Raman, A.Thorpe, J.J.Boersma, M.D.Kuznetsov, V.I.Miller, M.D.Taverna, S.D.Phillips, G.N.Denu, J.M.

(2016) Nat Commun 7: 13387-13387

  • DOI: 10.1038/ncomms13387
  • Primary Citation of Related Structures:  5D6W, 5D6X, 5D6Y

  • PubMed Abstract: 
  • The KDM4 histone demethylases are conserved epigenetic regulators linked to development, spermatogenesis and tumorigenesis. However, how the KDM4 family targets specific chromatin regions is largely unknown. Here, an extensive histone peptide microar ...

    The KDM4 histone demethylases are conserved epigenetic regulators linked to development, spermatogenesis and tumorigenesis. However, how the KDM4 family targets specific chromatin regions is largely unknown. Here, an extensive histone peptide microarray analysis uncovers trimethyl-lysine histone-binding preferences among the closely related KDM4 double tudor domains (DTDs). KDM4A/B DTDs bind strongly to H3K23me3, a poorly understood histone modification recently shown to be enriched in meiotic chromatin of ciliates and nematodes. The 2.28 Å co-crystal structure of KDM4A-DTD in complex with H3K23me3 peptide reveals key intermolecular interactions for H3K23me3 recognition. Furthermore, analysis of the 2.56 Å KDM4B-DTD crystal structure pinpoints the underlying residues required for exclusive H3K23me3 specificity, an interaction supported by in vivo co-localization of KDM4B and H3K23me3 at heterochromatin in mammalian meiotic and newly postmeiotic spermatocytes. In vitro demethylation assays suggest H3K23me3 binding by KDM4B stimulates H3K36 demethylation. Together, these results provide a possible mechanism whereby H3K23me3-binding by KDM4B directs localized H3K36 demethylation during meiosis and spermatogenesis.


    Organizational Affiliation

    Wisconsin Institute for Discovery, Morgridge Institute for Research, University of Wisconsin-Madison, Madison, Wisconsin 53715, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Lysine-specific demethylase 4B
A, B
119Homo sapiensGene Names: KDM4B (JHDM3B, JMJD2B, KIAA0876)
EC: 1.14.11.-
Find proteins for O94953 (Homo sapiens)
Go to Gene View: KDM4B
Go to UniProtKB:  O94953
Experimental Data & Validation

Experimental Data

Unit Cell:
Length (Å)Angle (°)
a = 77.436α = 90.00
b = 77.436β = 90.00
c = 50.758γ = 120.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
PHENIXrefinement
SCALEPACKdata scaling
HKL-2000data scaling
HKL-2000data reduction
PHENIXphasing
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationCountryGrant Number
National Institutes of Health/National Institute of General Medical SciencesUnited StatesGM098248
National Institutes of Health/National Institute of General Medical SciencesUnited StatesGM059785-15/P250VA

Revision History 

  • Version 1.0: 2016-03-16
    Type: Initial release
  • Version 1.1: 2017-08-02
    Type: Database references, Derived calculations
  • Version 1.2: 2017-09-06
    Type: Author supporting evidence, Refinement description