1AP8

TRANSLATION INITIATION FACTOR EIF4E IN COMPLEX WITH M7GDP, NMR, 20 STRUCTURES


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 60 
  • Conformers Submitted: 20 
  • Selection Criteria: NO VIOLATION ABOVE 0.5 ANGSTROMS AND 5 DEGREE DIHEDRAL ANGLE 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of translation factor eIF4E bound to m7GDP and interaction with 4E-binding protein.

Matsuo, H.Li, H.McGuire, A.M.Fletcher, C.M.Gingras, A.C.Sonenberg, N.Wagner, G.

(1997) Nat.Struct.Mol.Biol. 4: 717-724


  • PubMed Abstract: 
  • eIF4E, the mRNA cap binding protein, is a master switch that controls eukaryotic translation. To be active, it must bind eIF4G and form the eIF4F complex, which also contains eIF4A. Translation is downregulated by association of eIF4E with 4E-BP, whi ...

    eIF4E, the mRNA cap binding protein, is a master switch that controls eukaryotic translation. To be active, it must bind eIF4G and form the eIF4F complex, which also contains eIF4A. Translation is downregulated by association of eIF4E with 4E-BP, which occupies the eIF4G binding site. Signalling events acting on 4E-BP cause it to dissociate from eIF4E, and eIF4E is then free to bind eIF4G to form the active eIF4F complex. We have solved the structure of the yeast eIF4E/m7Gpp complex in a CHAPS micelle. We determined the position of the second nucleotide in a complex with m7GpppA, and identified the 4E-BP binding site. eIF4E has a curved eight-stranded antiparallel beta-sheet, decorated with three helices on the convex face and three smaller helices inserted in connecting loops. The m7G of the cap is intercalated into a stack of tryptophans in the concave face. The 4E-BP binding site is located in a region encompassing one edge of the beta-sheet, the adjacent helix a2 and several regions of non-regular secondary structure. It is adjacent to, but does not overlap the cap-binding site.


    Organizational Affiliation

    Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachussetts 02115, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TRANSLATION INITIATION FACTOR EIF4E
A
213Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: CDC33 (TIF45)
Find proteins for P07260 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P07260
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: SOLUTION NMR
  • Conformers Calculated: 60 
  • Conformers Submitted: 20 
  • Selection Criteria: NO VIOLATION ABOVE 0.5 ANGSTROMS AND 5 DEGREE DIHEDRAL ANGLE 
  • Olderado: 1AP8 Olderado
Software Package:
Software NamePurpose
X-PLORphasing
X-PLORrefinement
X-PLORmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-01-28
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance