5U5H

Crystal structure of EED in complex with 6-(2-fluoro-5-methoxybenzyl)-1-isopropyl-5,6,7,8-tetrahydroimidazo[1,5-a]pyridin-3-amine 6-(2-fluoro-5-methoxybenzyl)-1-isopropyl-5,6,7,8-tetrahydroimidazo[1,5-a]pyridin-3-amine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.204 
  • R-Value Work: 0.164 
  • R-Value Observed: 0.166 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history


Literature

Structure-Guided Design of EED Binders Allosterically Inhibiting the Epigenetic Polycomb Repressive Complex 2 (PRC2) Methyltransferase.

Lingel, A.Sendzik, M.Huang, Y.Shultz, M.D.Cantwell, J.Dillon, M.P.Fu, X.Fuller, J.Gabriel, T.Gu, J.Jiang, X.Li, L.Liang, F.McKenna, M.Qi, W.Rao, W.Sheng, X.Shu, W.Sutton, J.Taft, B.Wang, L.Zeng, J.Zhang, H.Zhang, M.Zhao, K.Lindvall, M.Bussiere, D.E.

(2017) J Med Chem 60: 415-427

  • DOI: https://doi.org/10.1021/acs.jmedchem.6b01473
  • Primary Citation of Related Structures:  
    5U5H, 5U5K, 5U5T, 5U62

  • PubMed Abstract: 

    PRC2 is a multisubunit methyltransferase involved in epigenetic regulation of early embryonic development and cell growth. The catalytic subunit EZH2 methylates primarily lysine 27 of histone H3, leading to chromatin compaction and repression of tumor suppressor genes. Inhibiting this activity by small molecules targeting EZH2 was shown to result in antitumor efficacy. Here, we describe the optimization of a chemical series representing a new class of PRC2 inhibitors which acts allosterically via the trimethyllysine pocket of the noncatalytic EED subunit. Deconstruction of a larger and complex screening hit to a simple fragment-sized molecule followed by structure-guided regrowth and careful property modulation were employed to yield compounds which achieve submicromolar inhibition in functional assays and cellular activity. The resulting molecules can serve as a simplified entry point for lead optimization and can be utilized to study this new mechanism of PRC2 inhibition and the associated biology in detail.


  • Organizational Affiliation

    Novartis Institutes for BioMedical Research , 5300 Chiron Way, Emeryville, California 94608, United States.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Polycomb protein EED367Homo sapiensMutation(s): 0 
Gene Names: EED
UniProt & NIH Common Fund Data Resources
Find proteins for O75530 (Homo sapiens)
Explore O75530 
Go to UniProtKB:  O75530
PHAROS:  O75530
GTEx:  ENSG00000074266 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO75530
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
7VV
Query on 7VV

Download Ideal Coordinates CCD File 
B [auth A](6S)-6-[(2-fluoro-5-methoxyphenyl)methyl]-1-(propan-2-yl)-5,6,7,8-tetrahydroimidazo[1,5-a]pyridin-3-amine
C18 H24 F N3 O
XJHGXEWMRNPZQE-LBPRGKRZSA-N
GOL
Query on GOL

Download Ideal Coordinates CCD File 
C [auth A]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
Binding Affinity Annotations 
IDSourceBinding Affinity
7VV BindingDB:  5U5H IC50: min: 1300, max: 2900 (nM) from 2 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.204 
  • R-Value Work: 0.164 
  • R-Value Observed: 0.166 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50.57α = 90
b = 60β = 103.86
c = 66.57γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
iMOSFLMdata reduction
SCALAdata scaling
AMoREphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-01-11
    Type: Initial release
  • Version 1.1: 2017-01-18
    Changes: Database references
  • Version 1.2: 2017-01-25
    Changes: Database references
  • Version 1.3: 2024-03-06
    Changes: Data collection, Database references