5TTW

Crystal Structure of EED in Complex with UNC4859


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.74 Å
  • R-Value Free: 0.214 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.169 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Discovery of Peptidomimetic Ligands of EED as Allosteric Inhibitors of PRC2.

Barnash, K.D.The, J.Norris-Drouin, J.L.Cholensky, S.H.Worley, B.M.Li, F.Stuckey, J.I.Brown, P.J.Vedadi, M.Arrowsmith, C.H.Frye, S.V.James, L.I.

(2017) ACS Comb Sci 19: 161-172

  • DOI: 10.1021/acscombsci.6b00174
  • Primary Citation of Related Structures:  
    5TTW

  • PubMed Abstract: 
  • The function of EED within polycomb repressive complex 2 (PRC2) is mediated by a complex network of protein-protein interactions. Allosteric activation of PRC2 by binding of methylated proteins to the embryonic ectoderm development (EED) aromatic cage is essential for full catalytic activity, but details of this regulation are not fully understood ...

    The function of EED within polycomb repressive complex 2 (PRC2) is mediated by a complex network of protein-protein interactions. Allosteric activation of PRC2 by binding of methylated proteins to the embryonic ectoderm development (EED) aromatic cage is essential for full catalytic activity, but details of this regulation are not fully understood. EED's recognition of the product of PRC2 activity, histone H3 lysine 27 trimethylation (H3K27me3), stimulates PRC2 methyltransferase activity at adjacent nucleosomes leading to H3K27me3 propagation and, ultimately, gene repression. By coupling combinatorial chemistry and structure-based design, we optimized a low-affinity methylated jumonji, AT-rich interactive domain 2 (Jarid2) peptide to a smaller, more potent peptidomimetic ligand (K d = 1.14 ± 0.14 μM) of the aromatic cage of EED. Our strategy illustrates the effectiveness of applying combinatorial chemistry to achieve both ligand potency and property optimization. Furthermore, the resulting ligands, UNC5114 and UNC5115, demonstrate that targeted disruption of EED's reader function can lead to allosteric inhibition of PRC2 catalytic activity.


    Organizational Affiliation

    Center for Integrative Chemical Biology and Drug Discovery, Division of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599, United States.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Polycomb protein EEDA, C367Homo 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
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
UNC4859B, D5synthetic constructMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download Ideal Coordinates CCD File 
E [auth A], Q [auth C]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
UNX
Query on UNX

Download Ideal Coordinates CCD File 
AA [auth D] , BA [auth D] , F [auth A] , G [auth A] , H [auth A] , I [auth A] , J [auth A] , K [auth A] , 
AA [auth D], BA [auth D], F [auth A], G [auth A], H [auth A], I [auth A], J [auth A], K [auth A], L [auth A], M [auth A], N [auth A], O [auth A], P [auth A], R [auth C], S [auth C], T [auth C], U [auth C], V [auth C], W [auth C], X [auth C], Y [auth C], Z [auth C]
UNKNOWN ATOM OR ION
X
 Ligand Interaction
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
M3L
Query on M3L
B, DL-PEPTIDE LINKINGC9 H21 N2 O2LYS
NLW
Query on NLW
B, DL-PEPTIDE LINKINGC6 H14 N2 OLEU
Experimental Data & Validation

Experimental Data

Unit Cell:
Length ( Å )Angle ( ˚ )
a = 176.486α = 90
b = 56.212β = 105.33
c = 76.687γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
Aimlessdata scaling
MOLREPphasing
REFMACrefinement
PDB_EXTRACTdata extraction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-01-11
    Type: Initial release
  • Version 1.1: 2017-02-22
    Changes: Database references
  • Version 1.2: 2017-03-29
    Changes: Database references