4UEC

Complex of D. melanogaster eIF4E with eIF4G and cap analog

Summary for 4UEC

• Entry DOI: 10.2210/pdb4uec/pdb
• Related: 4UE8 4UE9 4UEA 4UEB 4UED
• Descriptor: EUKARYOTIC TRANSLATION INITIATION FACTOR 4E, EUKARYOTIC TRANSLATION INITIATION FACTOR 4G, ISOFORM A, 7N-METHYL-8-HYDROGUANOSINE-5'-TRIPHOSPHATE, ... (4 entities in total)
• Functional Keywords: translation, gene regulation, cap binding protein, 4e binding protein, translation initiation
• Biological source: DROSOPHILA MELANOGASTER (FRUIT FLY); More
• Total number of polymer chains: 3
• Total formula weight: 52447.49

Authors

Peter, D.,Weichenrieder, O. (deposition date: 2014-12-16, release date: 2015-02-25, Last modification date: 2023-12-20)

Primary citation

Peter, D.,Igreja, C.,Weber, R.,Wohlbold, L.,Weiler, C.,Ebertsch, L.,Weichenrieder, O.,Izaurralde, E.
Molecular Architecture of 4E-BP Translational Inhibitors Bound to Eif4E.
Mol.Cell, 57:1074-, 2015

PubMed Abstract: 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.

PubMed: 25702871
DOI: 10.1016/J.MOLCEL.2015.01.017

Experimental method

X-RAY DIFFRACTION (2.4 Å)