2R3A

Methyltransferase domain of human suppressor of variegation 3-9 homolog 2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.179 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural biology of human H3K9 methyltransferases

Wu, H.Min, J.Lunin, V.V.Antoshenko, T.Dombrovski, L.Zeng, H.Allali-Hassani, A.Campagna-Slater, V.Vedadi, M.Arrowsmith, C.H.Plotnikov, A.N.Schapira, M.

(2010) PLoS One 5: e8570-e8570

  • DOI: 10.1371/journal.pone.0008570
  • Primary Citation of Related Structures:  
    3HNA, 2RFI, 2QPW, 2R3A, 2O8J, 2IGQ

  • PubMed Abstract: 
  • SET domain methyltransferases deposit methyl marks on specific histone tail lysine residues and play a major role in epigenetic regulation of gene transcription. We solved the structures of the catalytic domains of GLP, G9a, Suv39H2 and PRDM2, four o ...

    SET domain methyltransferases deposit methyl marks on specific histone tail lysine residues and play a major role in epigenetic regulation of gene transcription. We solved the structures of the catalytic domains of GLP, G9a, Suv39H2 and PRDM2, four of the eight known human H3K9 methyltransferases in their apo conformation or in complex with the methyl donating cofactor, and peptide substrates. We analyzed the structural determinants for methylation state specificity, and designed a G9a mutant able to tri-methylate H3K9. We show that the I-SET domain acts as a rigid docking platform, while induced-fit of the Post-SET domain is necessary to achieve a catalytically competent conformation. We also propose a model where long-range electrostatics bring enzyme and histone substrate together, while the presence of an arginine upstream of the target lysine is critical for binding and specificity.


    Organizational Affiliation

    Structural Genomics Consortium, University of Toronto, Toronto, Ontario, Canada.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Histone-lysine N-methyltransferase SUV39H2A300Homo sapiensMutation(s): 0 
Gene Names: SUV39H2KMT1B
EC: 2.1.1.43 (PDB Primary Data), 2.1.1.355 (UniProt)
Find proteins for Q9H5I1 (Homo sapiens)
Explore Q9H5I1 
Go to UniProtKB:  Q9H5I1
NIH Common Fund Data Resources
PHAROS  Q9H5I1
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SAM
Query on SAM

Download CCD File 
A
S-ADENOSYLMETHIONINE
C15 H22 N6 O5 S
MEFKEPWMEQBLKI-FCKMPRQPSA-N
 Ligand Interaction
SER
Query on SER

Download CCD File 
A
SERINE
C3 H7 N O3
MTCFGRXMJLQNBG-REOHCLBHSA-N
 Ligand Interaction
ZN
Query on ZN

Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.179 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 45.748α = 90
b = 63.925β = 109.33
c = 64.529γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
CrystalCleardata collection
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-09-11
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance