3SVM

Human MPP8 - human DNMT3AK47me2 peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.31 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.257 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

MPP8 mediates the interactions between DNA methyltransferase Dnmt3a and H3K9 methyltransferase GLP/G9a.

Chang, Y.Sun, L.Kokura, K.Horton, J.R.Fukuda, M.Espejo, A.Izumi, V.Koomen, J.M.Bedford, M.T.Zhang, X.Shinkai, Y.Fang, J.Cheng, X.

(2011) Nat Commun 2: 533-533

  • DOI: 10.1038/ncomms1549
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • DNA CpG methylation and histone H3 lysine 9 (H3K9) methylation are two major repressive epigenetic modifications, and these methylations are positively correlated with one another in chromatin. Here we show that G9a or G9a-like protein (GLP) dimethyl ...

    DNA CpG methylation and histone H3 lysine 9 (H3K9) methylation are two major repressive epigenetic modifications, and these methylations are positively correlated with one another in chromatin. Here we show that G9a or G9a-like protein (GLP) dimethylate the amino-terminal lysine 44 (K44) of mouse Dnmt3a (equivalent to K47 of human DNMT3A) in vitro and in cells overexpressing G9a or GLP. The chromodomain of MPP8 recognizes the dimethylated Dnmt3aK44me2. MPP8 also interacts with self-methylated GLP in a methylation-dependent manner. The MPP8 chromodomain forms a dimer in solution and in crystals, suggesting that a dimeric MPP8 molecule could bridge the methylated Dnmt3a and GLP, resulting in a silencing complex of Dnmt3a-MPP8-GLP/G9a on chromatin templates. Together, these findings provide a molecular explanation, at least in part, for the co-occurrence of DNA methylation and H3K9 methylation in chromatin.


    Organizational Affiliation

    Department of Biochemistry, Emory University School of Medicine, Atlanta, Georgia 30322, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
M-phase phosphoprotein 8
A
62Homo sapiensMutation(s): 0 
Gene Names: MPHOSPH8 (MPP8)
Find proteins for Q99549 (Homo sapiens)
Go to Gene View: MPHOSPH8
Go to UniProtKB:  Q99549
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
DNA (cytosine-5)-methyltransferase 3A
P
15Homo sapiensMutation(s): 0 
Gene Names: DNMT3A
EC: 2.1.1.37
Find proteins for Q9Y6K1 (Homo sapiens)
Go to Gene View: DNMT3A
Go to UniProtKB:  Q9Y6K1
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MLY
Query on MLY
P
L-PEPTIDE LINKINGC8 H18 N2 O2LYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.31 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.257 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 41.090α = 90.00
b = 43.900β = 90.00
c = 90.280γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-11-30
    Type: Initial release