6YVJ

EED in complex with a triazolopyrimidine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.84 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.182 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 2.1 of the entry. See complete history


Literature

Free energy perturbation in the design of EED ligands as inhibitors of polycomb repressive complex 2 (PRC2) methyltransferase.

O' Donovan, D.H.Gregson, C.Packer, M.J.Greenwood, R.Pike, K.G.Kawatkar, S.Bloecher, A.Robinson, J.Read, J.Code, E.Hsu, J.H.Shen, M.Woods, H.Barton, P.Fillery, S.Williamson, B.Rawlins, P.B.Bagal, S.K.

(2021) Bioorg Med Chem Lett 39: 127904-127904

  • DOI: https://doi.org/10.1016/j.bmcl.2021.127904
  • Primary Citation of Related Structures:  
    6YVI, 6YVJ

  • PubMed Abstract: 

    Free Energy Perturbation (FEP) calculations can provide high-confidence predictions of the interaction strength between a ligand and its protein target. We sought to explore a series of triazolopyrimidines which bind to the EED subunit of the PRC2 complex as potential anticancer therapeutics, using FEP calculations to inform compound design. Combining FEP predictions with a late-stage functionalisation (LSF) inspired synthetic approach allowed us to rapidly evaluate structural modifications in a previously unexplored region of the EED binding site. This approach generated a series of novel triazolopyrimidine EED ligands with improved physicochemical properties and which inhibit PRC2 methyltransferase activity in a cancer-relevant G401 cell line.


  • Organizational Affiliation

    Oncology R&D, AstraZeneca, Cambridge CB4 0WG, United Kingdom. Electronic address: daniel.odonovan@astrazeneca.com.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Polycomb protein EED
A, B
366Homo 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
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
L9W
Query on L9W

Download Ideal Coordinates CCD File 
C [auth A]N-(2,3-dihydro-1-benzofuran-4-ylmethyl)-8-(4-methylsulfonylphenyl)-[1,2,4]triazolo[4,3-c]pyrimidin-5-amine
C21 H19 N5 O3 S
GDDMEOORUYUIJL-UHFFFAOYSA-N
EJR (Subject of Investigation/LOI)
Query on EJR

Download Ideal Coordinates CCD File 
E [auth B]N-[(5-fluoranyl-2,3-dihydro-1-benzofuran-4-yl)methyl]-8-(2-methylpyridin-3-yl)-[1,2,4]triazolo[4,3-c]pyrimidin-5-amine
C20 H17 F N6 O
XLIBABIFOBYHSV-UHFFFAOYSA-N
GOL
Query on GOL

Download Ideal Coordinates CCD File 
D [auth B]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.84 Å
  • R-Value Free: 0.199 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.182 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 87.02α = 90
b = 89.87β = 90
c = 99.14γ = 90
Software Package:
Software NamePurpose
Aimlessdata scaling
BUSTERrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
AMoREphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

  • Released Date: 2021-05-12 
  • Deposition Author(s): Read, J.A.

Revision History  (Full details and data files)

  • Version 1.0: 2021-05-12
    Type: Initial release
  • Version 2.0: 2021-07-14
    Changes: Database references, Derived calculations, Non-polymer description, Refinement description, Structure summary
  • Version 2.1: 2024-01-24
    Changes: Data collection, Database references, Refinement description