4U1C

Crystal structure of the eIF3a/eIF3c PCI-domain heterodimer


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.260 
  • R-Value Observed: 0.264 

wwPDB Validation 3D Report Full Report



Literature

Molecular Architecture of the 40SeIF1eIF3 Translation Initiation Complex.

Erzberger, J.P.Stengel, F.Pellarin, R.Zhang, S.Schaefer, T.Aylett, C.H.Cimermancic, P.Boehringer, D.Sali, A.Aebersold, R.Ban, N.

(2014) Cell 158: 1123-1135

  • DOI: 10.1016/j.cell.2014.07.044
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Eukaryotic translation initiation requires the recruitment of the large, multiprotein eIF3 complex to the 40S ribosomal subunit. We present X-ray structures of all major components of the minimal, six-subunit Saccharomyces cerevisiae eIF3 core. These ...

    Eukaryotic translation initiation requires the recruitment of the large, multiprotein eIF3 complex to the 40S ribosomal subunit. We present X-ray structures of all major components of the minimal, six-subunit Saccharomyces cerevisiae eIF3 core. These structures, together with electron microscopy reconstructions, cross-linking coupled to mass spectrometry, and integrative structure modeling, allowed us to position and orient all eIF3 components on the 40S⋅eIF1 complex, revealing an extended, modular arrangement of eIF3 subunits. Yeast eIF3 engages 40S in a clamp-like manner, fully encircling 40S to position key initiation factors on opposite ends of the mRNA channel, providing a platform for the recruitment, assembly, and regulation of the translation initiation machinery. The structures of eIF3 components reported here also have implications for understanding the architecture of the mammalian 43S preinitiation complex and the complex of eIF3, 40S, and the hepatitis C internal ribosomal entry site RNA.


    Organizational Affiliation

    Department of Biology, Institute of Molecular Biology and Biophysics, ETH Zurich, Otto-Stern-Weg 5, 8093 Zurich, Switzerland. Electronic address: ban@mol.biol.ethz.ch.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Eukaryotic translation initiation factor 3 subunit C
C
567Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: NIP1YMR309CYM9924.01CYM9952.11C
Find proteins for P32497 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P32497

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Eukaryotic translation initiation factor 3 subunit A
A
274Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPG1TIF32YBR079CYBR0734
Find proteins for P38249 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P38249
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.260 
  • R-Value Observed: 0.264 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 155.55α = 90
b = 155.55β = 90
c = 91.22γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-09-10
    Type: Initial release