5TUZ

Structure of human GLP SET-domain (EHMT1) in complex with inhibitor MS0124


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.161 
  • R-Value Observed: 0.163 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.4 of the entry. See complete history


Literature

Discovery of Potent and Selective Inhibitors for G9a-Like Protein (GLP) Lysine Methyltransferase.

Xiong, Y.Li, F.Babault, N.Dong, A.Zeng, H.Wu, H.Chen, X.Arrowsmith, C.H.Brown, P.J.Liu, J.Vedadi, M.Jin, J.

(2017) J Med Chem 60: 1876-1891

  • DOI: https://doi.org/10.1021/acs.jmedchem.6b01645
  • Primary Citation of Related Structures:  
    5TTF, 5TTG, 5TUY, 5TUZ

  • PubMed Abstract: 

    G9a-like protein (GLP) and G9a are highly homologous protein lysine methyltransferases (PKMTs) sharing approximately 80% sequence identity in their catalytic domains. GLP and G9a form a heterodimer complex and catalyze mono- and dimethylation of histone H3 lysine 9 and nonhistone substrates. Although they are closely related, GLP and G9a possess distinct physiological and pathophysiological functions. Thus, GLP or G9a selective small-molecule inhibitors are useful tools to dissect their distinct biological functions. We previously reported potent and selective G9a/GLP dual inhibitors including UNC0638 and UNC0642. Here we report the discovery of potent and selective GLP inhibitors including 4 (MS0124) and 18 (MS012), which are >30-fold and 140-fold selective for GLP over G9a and other methyltransferases, respectively. The cocrystal structures of GLP and G9a in the complex with either 4 or 18 displayed virtually identical binding modes and interactions, highlighting the challenges in structure-based design of selective inhibitors for either enzyme.


  • Organizational Affiliation

    Department of Pharmacological Sciences and Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai , New York, New York 10029, United States.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Histone-lysine N-methyltransferase EHMT1
A, B
261Homo sapiensMutation(s): 0 
Gene Names: EHMT1EUHMTASE1GLPKIAA1876KMT1D
EC: 2.1.1 (PDB Primary Data), 2.1.1.43 (PDB Primary Data), 2.1.1.367 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for Q9H9B1 (Homo sapiens)
Explore Q9H9B1 
Go to UniProtKB:  Q9H9B1
PHAROS:  Q9H9B1
GTEx:  ENSG00000181090 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9H9B1
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
SAM
Query on SAM

Download Ideal Coordinates CCD File 
C [auth A],
J [auth B]
S-ADENOSYLMETHIONINE
C15 H22 N6 O5 S
MEFKEPWMEQBLKI-FCKMPRQPSA-N
7L6
Query on 7L6

Download Ideal Coordinates CCD File 
H [auth A],
O [auth B]
6,7-dimethoxy-N-(1-methylpiperidin-4-yl)-2-(morpholin-4-yl)quinazolin-4-amine
C20 H29 N5 O3
MEVMMQQJOXBSAX-UHFFFAOYSA-N
ZN
Query on ZN

Download Ideal Coordinates CCD File 
D [auth A]
E [auth A]
F [auth A]
G [auth A]
K [auth B]
D [auth A],
E [auth A],
F [auth A],
G [auth A],
K [auth B],
L [auth B],
M [auth B],
N [auth B]
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
EDO
Query on EDO

Download Ideal Coordinates CCD File 
I [auth A],
P [auth B]
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
Binding Affinity Annotations 
IDSourceBinding Affinity
7L6 BindingDB:  5TUZ Kd: 40 (nM) from 1 assay(s)
IC50: 13 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.161 
  • R-Value Observed: 0.163 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 74.94α = 90
b = 95.78β = 90
c = 102.36γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
SCALAdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01GM103893

Revision History  (Full details and data files)

  • Version 1.0: 2017-02-22
    Type: Initial release
  • Version 1.1: 2017-03-22
    Changes: Database references
  • Version 1.2: 2017-09-27
    Changes: Author supporting evidence
  • Version 1.3: 2020-01-01
    Changes: Author supporting evidence
  • Version 1.4: 2023-10-04
    Changes: Data collection, Database references, Derived calculations, Refinement description