View source for 4ueb


==Complex of D. melanogaster eIF4E with a designed 4E-binding protein (Form II)==
<StructureSection load='4ueb' size='340' side='right'caption='[[4ueb]], [[Resolution|resolution]] 2.52&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4ueb]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Drosophila_melanogaster Drosophila melanogaster] 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=4UEB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4UEB 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]] 2.52&#8491;</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=4ueb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4ueb OCA], [https://pdbe.org/4ueb PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4ueb RCSB], [https://www.ebi.ac.uk/pdbsum/4ueb PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4ueb ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/IF4E_DROME IF4E_DROME] Recognizes and binds the 7-methylguanosine-containing mRNA cap during an early step in the initiation of protein synthesis and facilitates ribosome binding by inducing the unwinding of the mRNAs secondary structures.<ref>PMID:8663200</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The eIF4E-binding proteins (4E-BPs) represent a diverse class of translation inhibitors that are often deregulated in cancer cells. 4E-BPs inhibit translation by competing with eIF4G for binding to eIF4E through an interface that consists of canonical and non-canonical eIF4E-binding motifs connected by a linker. The lack of high-resolution structures including the linkers, which contain phosphorylation sites, limits our understanding of how phosphorylation inhibits complex formation. Furthermore, the binding mechanism of the non-canonical motifs is poorly understood. Here, we present structures of human eIF4E bound to 4E-BP1 and fly eIF4E bound to Thor, 4E-T, and eIF4G. These structures reveal architectural elements that are unique to 4E-BPs and provide insight into the consequences of phosphorylation. Guided by these structures, we designed and crystallized a 4E-BP mimic that shows increased repressive activity. Our studies pave the way for the rational design of 4E-BP mimics as therapeutic tools to decrease translation during oncogenic transformation.

Molecular Architecture of 4E-BP Translational Inhibitors Bound to eIF4E.,Peter D, Igreja C, Weber R, Wohlbold L, Weiler C, Ebertsch L, Weichenrieder O, Izaurralde E Mol Cell. 2015 Feb 18. pii: S1097-2765(15)00018-0. doi:, 10.1016/j.molcel.2015.01.017. PMID:25702871<ref>PMID:25702871</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4ueb" style="background-color:#fffaf0;"></div>

==See Also==
*[[Eukaryotic initiation factor 3D structures|Eukaryotic initiation factor 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Drosophila melanogaster]]
[[Category: Large Structures]]
[[Category: Synthetic construct]]
[[Category: Peter D]]
[[Category: Weichenrieder O]]