View source for 5ttw


==Crystal Structure of EED in Complex with UNC4859==
<StructureSection load='5ttw' size='340' side='right'caption='[[5ttw]], [[Resolution|resolution]] 1.74&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[5ttw]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5TTW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5TTW FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.74&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=M3L:N-TRIMETHYLLYSINE'>M3L</scene>, <scene name='pdbligand=NLW:L-LEUCINAMIDE'>NLW</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=UNX:UNKNOWN+ATOM+OR+ION'>UNX</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=5ttw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5ttw OCA], [https://pdbe.org/5ttw PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5ttw RCSB], [https://www.ebi.ac.uk/pdbsum/5ttw PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5ttw ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/EED_HUMAN EED_HUMAN] Polycomb group (PcG) protein. Component of the PRC2/EED-EZH2 complex, which methylates 'Lys-9' and 'Lys-27' of histone H3, leading to transcriptional repression of the affected target gene. Also recognizes 'Lys-26' trimethylated histone H1 with the effect of inhibiting PRC2 complex methyltransferase activity on nucleosomal histone H3 'Lys-27', whereas H3 'Lys-27' recognition has the opposite effect, enabling the propagation of this repressive mark. The PRC2/EED-EZH2 complex may also serve as a recruiting platform for DNA methyltransferases, thereby linking two epigenetic repression systems. Genes repressed by the PRC2/EED-EZH2 complex include HOXC8, HOXA9, MYT1 and CDKN2A.<ref>PMID:9584199</ref> <ref>PMID:10581039</ref> <ref>PMID:14532106</ref> <ref>PMID:15385962</ref> <ref>PMID:15231737</ref> <ref>PMID:15225548</ref> <ref>PMID:16357870</ref> <ref>PMID:18285464</ref> <ref>PMID:20974918</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
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 (Kd = 1.14 +/- 0.14 muM) 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.

Discovery of Peptidomimetic Ligands of EED as Allosteric Inhibitors of PRC2.,Barnash KD, The J, Norris-Drouin JL, Cholensky SH, Worley BM, Li F, Stuckey JI, Brown PJ, Vedadi M, Arrowsmith CH, Frye SV, James LI ACS Comb Sci. 2017 Feb 22. doi: 10.1021/acscombsci.6b00174. PMID:28165227<ref>PMID:28165227</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 5ttw" style="background-color:#fffaf0;"></div>

==See Also==
*[[Polycomb complex proteins 3D structures|Polycomb complex proteins 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Synthetic construct]]
[[Category: Arrowsmith CH]]
[[Category: Barnash KD]]
[[Category: Bountra C]]
[[Category: Brown PJ]]
[[Category: Edwards AM]]
[[Category: Frye SV]]
[[Category: James LI]]
[[Category: The J]]