5T0M

A histone H3K9M mutation traps histone methyltransferase Clr4 to prevent heterochromatin spreading

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

  • Deposited: 2016-08-16 Released: 2016-10-05 
  • Deposition Author(s): Xu, K., Tong, L.
  • Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS), National Institutes of Health/Office of the Director, National Institutes of Health/National Center for Research Resources (NIH/NCRR)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.186 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

A histone H3K9M mutation traps histone methyltransferase Clr4 to prevent heterochromatin spreading.

Shan, C.M.Wang, J.Xu, K.Chen, H.Yue, J.X.Andrews, S.Moresco, J.J.Yates, J.R.Nagy, P.L.Tong, L.Jia, S.

(2016) Elife 5

  • DOI: 10.7554/eLife.17903
  • Primary Citation of Related Structures:  
    5T0K, 5T0M

  • PubMed Abstract: 
  • Histone lysine-to-methionine (K-to-M) mutations are associated with multiple cancers, and they function in a dominant fashion to block the methylation of corresponding lysines on wild type histones. However, their mechanisms of function are controver ...

    Histone lysine-to-methionine (K-to-M) mutations are associated with multiple cancers, and they function in a dominant fashion to block the methylation of corresponding lysines on wild type histones. However, their mechanisms of function are controversial. Here we show that in fission yeast, introducing the K9M mutation into one of the three histone H3 genes dominantly blocks H3K9 methylation on wild type H3 across the genome. In addition, H3K9M enhances the interaction of histone H3 tail with the H3K9 methyltransferase Clr4 in a SAM (S-adenosyl-methionine)-dependent manner, and Clr4 is trapped at nucleation sites to prevent its spreading and the formation of large heterochromatin domains. We further determined the crystal structure of an H3K9M peptide in complex with human H3K9 methyltransferase G9a and SAM, which reveales that the methionine side chain had enhanced van der Waals interactions with G9a. Therefore, our results provide a detailed mechanism by which H3K9M regulates H3K9 methylation.


    Organizational Affiliation

    Department of Biological Sciences, Columbia University, New York, United States.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Histone-lysine N-methyltransferase EHMT2AB281Homo sapiensMutation(s): 0 
Gene Names: EHMT2BAT8C6orf30G9AKMT1CNG36
EC: 2.1.1 (PDB Primary Data), 2.1.1.43 (PDB Primary Data)
Find proteins for Q96KQ7 (Homo sapiens)
Explore Q96KQ7 
Go to UniProtKB:  Q96KQ7
NIH Common Fund Data Resources
PHAROS  Q96KQ7
Protein Feature View
Expand
  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
THR-LYS-GLN-THR-ALA-ARG-NLE-SER-THR-GLYCP15Homo sapiensMutation(s): 0 
Gene Names: 
Find proteins for P68431 (Homo sapiens)
Explore P68431 
Go to UniProtKB:  P68431
NIH Common Fund Data Resources
PHAROS  P68431
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
NLE
Query on NLE
C,PL-PEPTIDE LINKINGC6 H13 N O2LEU
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
SAHIC50:  2000   nM  BindingDB
SAHKi:  570   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.186 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 56.623α = 90
b = 78.284β = 91.16
c = 71.803γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data scaling
HKL-2000data reduction
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2016-08-16 
  • Released Date: 2016-10-05 
  • Deposition Author(s): Xu, K., Tong, L.

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01-GM085145
National Institutes of Health/Office of the DirectorUnited StatesS10-OD012018
National Institutes of Health/National Center for Research Resources (NIH/NCRR)United StatesP41-RR011823
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesP41-GM103533

Revision History 

  • Version 1.0: 2016-10-05
    Type: Initial release
  • Version 1.1: 2017-09-20
    Changes: Author supporting evidence, Derived calculations
  • Version 1.2: 2019-12-04
    Changes: Author supporting evidence