1HU3

MIDDLE DOMAIN OF HUMAN EIF4GII


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.37 Å
  • R-Value Free: 0.295 
  • R-Value Work: 0.249 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

A conserved HEAT domain within eIF4G directs assembly of the translation initiation machinery.

Marcotrigiano, J.Lomakin, I.B.Sonenberg, N.Pestova, T.V.Hellen, C.U.Burley, S.K.

(2001) Mol Cell 7: 193-203

  • DOI: 10.1016/s1097-2765(01)00167-8
  • Primary Citation of Related Structures:  
    1HU3

  • PubMed Abstract: 
  • The X-ray structure of the phylogenetically conserved middle portion of human eukaryotic initiation factor (eIF) 4GII has been determined at 2.4 A resolution, revealing a crescent-shaped domain consisting of ten alpha helices arranged as five HEAT repeat ...

    The X-ray structure of the phylogenetically conserved middle portion of human eukaryotic initiation factor (eIF) 4GII has been determined at 2.4 A resolution, revealing a crescent-shaped domain consisting of ten alpha helices arranged as five HEAT repeats. Together with the ATP-dependent RNA helicase eIF4A, this HEAT domain suffices for 48S ribosomal complex formation with a picornaviral RNA internal ribosome entry site (IRES). Structure-based site-directed mutagenesis was used to identify two adjacent features on the surface of this essential component of the translation initiation machinery that, respectively, bind eIF4A and a picornaviral IRES. The structural and biochemical results provide mechanistic insights into both cap-dependent and cap-independent translation initiation.


    Organizational Affiliation

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



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
EIF4GII A260Homo sapiensMutation(s): 9 
Gene Names: EIF4G3
Find proteins for O43432 (Homo sapiens)
Explore O43432 
Go to UniProtKB:  O43432
NIH Common Fund Data Resources
PHAROS:  O43432
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
AL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.37 Å
  • R-Value Free: 0.295 
  • R-Value Work: 0.249 
  • Space Group: H 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 118.8α = 90
b = 118.8β = 90
c = 58.2γ = 120
Software Package:
Software NamePurpose
SOLVEphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-02-21
    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: 2021-02-03
    Changes: Database references, Derived calculations, Structure summary