3WJ9

Crystal structure of the eukaryotic initiation factor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.506 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.238 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Crystal structure of the eukaryotic translation initiation factor 2A from Schizosaccharomyces pombe

Kashiwagi, K.Ito, T.Yokoyama, S.

(2014) J.Struct.Funct.Genom. --: --

  • DOI: 10.1007/s10969-014-9177-y

  • PubMed Abstract: 
  • The eukaryotic translation initiation factor 2A (eIF2A) was identified as a factor that stimulates the binding of methionylated initiator tRNA (Met-tRNA i (Met) ) to the 40S ribosomal subunit, but its physiological role remains poorly defined. Recent ...

    The eukaryotic translation initiation factor 2A (eIF2A) was identified as a factor that stimulates the binding of methionylated initiator tRNA (Met-tRNA i (Met) ) to the 40S ribosomal subunit, but its physiological role remains poorly defined. Recently, eIF2A was shown to be involved in unconventional translation initiation from CUG codons and in viral protein synthesis under stress conditions where eIF2 is inactivated. We determined the crystal structure of the WD-repeat domain of Schizosaccharomyces pombe eIF2A at 2.5 Å resolution. The structure adopts a novel nine-bladed β-propeller fold. In contrast to the usual β-propeller proteins, the central channel of the molecule has the narrower opening on the bottom of the protein and the wider opening on the top. Highly conserved residues are concentrated in the positively-charged top face, suggesting the importance of this face for interactions with nucleic acids or other initiation factors.


    Organizational Affiliation

    Department of Biophysics and Biochemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Eukaryotic translation initiation factor 2A
A, B
412Schizosaccharomyces pombe (strain 972 / ATCC 24843)Mutation(s): 0 
Find proteins for O74965 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
Go to UniProtKB:  O74965
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.506 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.238 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 93.443α = 90.00
b = 93.443β = 90.00
c = 269.387γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling
HKL-2000data collection
PHENIXrefinement
PHASERphasing
SHARPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-03-12
    Type: Initial release