5T48

Crystal structure of the D. melanogaster eIF4E-eIF4G complex without lateral contact


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.19 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.210 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history


Literature

The Structures of eIF4E-eIF4G Complexes Reveal an Extended Interface to Regulate Translation Initiation.

Gruner, S.Peter, D.Weber, R.Wohlbold, L.Chung, M.Y.Weichenrieder, O.Valkov, E.Igreja, C.Izaurralde, E.

(2016) Mol Cell 64: 467-479

  • DOI: https://doi.org/10.1016/j.molcel.2016.09.020
  • Primary Citation of Related Structures:  
    5T46, 5T47, 5T48

  • PubMed Abstract: 

    Eukaryotic initiation factor 4G (eIF4G) plays a central role in translation initiation through its interactions with the cap-binding protein eIF4E. This interaction is a major drug target for repressing translation and is naturally regulated by 4E-binding proteins (4E-BPs). 4E-BPs and eIF4G compete for binding to the eIF4E dorsal surface via a shared canonical 4E-binding motif, but also contain auxiliary eIF4E-binding sequences, which were assumed to contact non-overlapping eIF4E surfaces. However, it is unknown how metazoan eIF4G auxiliary sequences bind eIF4E. Here, we describe crystal structures of human and Drosophila melanogaster eIF4E-eIF4G complexes, which unexpectedly reveal that the eIF4G auxiliary sequences bind to the lateral surface of eIF4E, using a similar mode to that of 4E-BPs. Our studies provide a molecular model of the eIF4E-eIF4G complex, shed light on the competition mechanism of 4E-BPs, and enable the rational design of selective eIF4G inhibitors to dampen dysregulated translation in disease.


  • Organizational Affiliation

    Department of Biochemistry, Max Planck Institute for Developmental Biology, Spemannstrasse 35, 72076 Tübingen, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Eukaryotic translation initiation factor 4E184Drosophila melanogasterMutation(s): 0 
Gene Names: eIF-4EEif4eEIF4FCG4035
UniProt
Find proteins for P48598 (Drosophila melanogaster)
Explore P48598 
Go to UniProtKB:  P48598
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP48598
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Eukaryotic translation initiation factor 4G, isoform A64Drosophila melanogasterMutation(s): 0 
Gene Names: eIF4GeIF-4GeIF4G-RACG10811Dmel_CG10811
UniProt
Find proteins for O61380 (Drosophila melanogaster)
Explore O61380 
Go to UniProtKB:  O61380
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO61380
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
MGP
Query on MGP

Download Ideal Coordinates CCD File 
C [auth A]7-METHYL-GUANOSINE-5'-TRIPHOSPHATE
C11 H19 N5 O14 P3
DKVRNHPCAOHRSI-KQYNXXCUSA-O
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.19 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.210 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 45.622α = 90
b = 66.196β = 90
c = 75.618γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-10-26
    Type: Initial release
  • Version 1.1: 2016-11-02
    Changes: Database references
  • Version 1.2: 2016-11-16
    Changes: Database references
  • Version 1.3: 2024-01-17
    Changes: Data collection, Database references, Refinement description