1EJ4

COCRYSTAL STRUCTURE OF EIF4E/4E-BP1 PEPTIDE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.219 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Cap-dependent translation initiation in eukaryotes is regulated by a molecular mimic of eIF4G.

Marcotrigiano, J.Gingras, A.C.Sonenberg, N.Burley, S.K.

(1999) Mol.Cell 3: 707-716

  • Primary Citation of Related Structures:  1EJH

  • PubMed Abstract: 
  • eIF4G uses a conserved Tyr-X-X-X-X-Leu-phi segment (where X is variable and phi is hydrophobic) to recognize eIF4E during cap-dependent translation initiation in eukaryotes. High-resolution X-ray crystallography and complementary biophysical methods ...

    eIF4G uses a conserved Tyr-X-X-X-X-Leu-phi segment (where X is variable and phi is hydrophobic) to recognize eIF4E during cap-dependent translation initiation in eukaryotes. High-resolution X-ray crystallography and complementary biophysical methods have revealed that this eIF4E recognition motif undergoes a disorder-to-order transition, adopting an L-shaped, extended chain/alpha-helical conformation when it interacts with a phylogenetically invariant portion of the convex surface of eIF4E. Inhibitors of translation initiation known as eIF4E-binding proteins (4E-BPs) contain similar eIF4E recognition motifs. These molecules are molecular mimics of eIF4G, which act by occupying the same binding site on the convex dorsum of eIF4E and blocking assembly of the translation machinery. The implications of our results for translation initiation are discussed in detail, and a molecular mechanism for relief of translation inhibition following phosphorylation of the 4E-BPs is proposed.


    Organizational Affiliation

    Laboratories of Molecular Biophysics, Rockefeller University, New York, New York 10021, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
EUKARYOTIC INITIATION FACTOR 4E
A
190Mus musculusGene Names: Eif4e
Find proteins for P63073 (Mus musculus)
Go to UniProtKB:  P63073
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
EUKARYOTIC TRANSLATION INITIATION FACTOR 4E BINDING PROTEIN 1
B
14Homo sapiensGene Names: EIF4EBP1
Find proteins for Q13541 (Homo sapiens)
Go to Gene View: EIF4EBP1
Go to UniProtKB:  Q13541
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
M7G
Query on M7G

Download SDF File 
Download CCD File 
A
7N-METHYL-8-HYDROGUANOSINE-5'-DIPHOSPHATE
C11 H19 N5 O11 P2
QQODJOAVWUWVHJ-KQYNXXCUSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.219 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 81.900α = 90.00
b = 45.200β = 101.80
c = 62.100γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
AMoREphasing
SCALEPACKdata scaling
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-03-15
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2018-01-31
    Type: Experimental preparation