1EJH

EIF4E/EIF4G PEPTIDE/7-METHYL-GDP

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.218 

wwPDB Validation   3D Report Full Report


This is version 1.4 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

  • DOI: 10.1016/s1097-2765(01)80003-4
  • Primary Citation of Related Structures:  
    1EJ4, 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 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 ...

    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: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
EUKARYOTIC INITIATION FACTOR 4E A, B, C, D190Mus musculusMutation(s): 0 
Gene Names: Eif4e
Find proteins for P63073 (Mus musculus)
Explore P63073 
Go to UniProtKB:  P63073
NIH Common Fund Data Resources
IMPC:  MGI:95305
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
EUKARYOTIC INITIATION FACTOR 4GII E, F, G, H16N/AMutation(s): 0 
Find proteins for Q13541 (Homo sapiens)
Explore Q13541 
Go to UniProtKB:  Q13541
NIH Common Fund Data Resources
PHAROS:  Q13541
GTEx:  ENSG00000187840
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
M7G
Query on M7G
Download Ideal Coordinates CCD File 
A, B, C, D
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: 2.20 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.218 
  • Space Group: P 31
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 140.6α = 90
b = 140.6β = 90
c = 39.4γ = 120
Software Package:
Software NamePurpose
AMoREphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-03-10
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-01-31
    Changes: Experimental preparation
  • Version 1.4: 2021-02-03
    Changes: Database references, Derived calculations, Structure summary