1IPB

CRYSTAL STRUCTURE OF EUKARYOTIC INITIATION FACTOR 4E COMPLEXED WITH 7-METHYL GPPPA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.196 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystal structures of 7-methylguanosine 5'-triphosphate (m(7)GTP)- and P(1)-7-methylguanosine-P(3)-adenosine-5',5'-triphosphate (m(7)GpppA)-bound human full-length eukaryotic initiation factor 4E: biological importance of the C-terminal flexible region

Tomoo, K.Shen, X.Okabe, K.Nozoe, Y.Fukuhara, S.Morino, S.Ishida, T.Taniguchi, T.Hasegawa, H.Terashima, A.Sasaki, M.Katsuya, Y.Kitamura, K.Miyoshi, H.Ishikawa, M.Miura, K.

(2002) BIOCHEM.J. 362: 539-544

  • Primary Citation of Related Structures:  1IPC

  • PubMed Abstract: 
  • The crystal structures of the full-length human eukaryotic initiation factor (eIF) 4E complexed with two mRNA cap analogues [7-methylguanosine 5'-triphosphate (m(7)GTP) and P(1)-7-methylguanosine-P(3)-adenosine-5',5'-triphosphate (m(7)GpppA)] were de ...

    The crystal structures of the full-length human eukaryotic initiation factor (eIF) 4E complexed with two mRNA cap analogues [7-methylguanosine 5'-triphosphate (m(7)GTP) and P(1)-7-methylguanosine-P(3)-adenosine-5',5'-triphosphate (m(7)GpppA)] were determined at 2.0 A resolution (where 1 A=0.1 nm). The flexibility of the C-terminal loop region of eIF4E complexed with m(7)GTP was significantly reduced when complexed with m(7)GpppA, suggesting the importance of the second nucleotide in the mRNA cap structure for the biological function of eIF4E, especially the fixation and orientation of the C-terminal loop region, including the eIF4E phosphorylation residue. The present results provide the structural basis for the biological function of both N- and C-terminal mobile regions of eIF4E in translation initiation, especially the regulatory function through the switch-on/off of eIF4E-binding protein-eIF4E phosphorylation.


    Organizational Affiliation

    Department of Physical Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan. tomoo@gly.oups.ac.jp




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
EUKARYOTIC TRANSLATION INITIATION FACTOR 4E
A
217Homo sapiensGene Names: EIF4E (EIF4EL1, EIF4F)
Find proteins for P06730 (Homo sapiens)
Go to Gene View: EIF4E
Go to UniProtKB:  P06730
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GTA
Query on GTA

Download SDF File 
Download CCD File 
A
P1-7-METHYLGUANOSINE-P3-ADENOSINE-5',5'-TRIPHOSPHATE
7-METHYL-GPPPA
C21 H30 N10 O17 P3
QQOHNVHGNZYSBP-XPWFQUROSA-O
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.196 
  • Space Group: P 43
Unit Cell:
Length (Å)Angle (°)
a = 89.260α = 90.00
b = 89.260β = 90.00
c = 38.510γ = 90.00
Software Package:
Software NamePurpose
CNSphasing
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-05-08
    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: 2017-10-04
    Type: Refinement description