3J8B

Model of the human eIF3 PCI-MPN octamer docked into the 43S-HCV IRES EM map


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 9.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


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
  • Primary Citation of Related Structures:  
    4U1C, 4U1D, 4U1E, 4U1F, 3J8B, 3J8C

  • 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 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 ...

    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.


    Related Citations: 
    • Hepatitis-C-virus-like internal ribosome entry sites displace eIF3 to gain access to the 40S subunit.
      Hashem, Y., des Georges, A., Dhote, V., Langlois, R., Liao, H.Y., Grassucci, R.A., Pestova, T.V., Hellen, C.U., Frank, J.
      (2013) Nature 503: 539

    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
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Eukaryotic translation initiation factor 3 subunit AA529Homo sapiensMutation(s): 0 
Gene Names: EIF3AEIF3S10KIAA0139
Find proteins for Q14152 (Homo sapiens)
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PHAROS:  Q14152
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Eukaryotic translation initiation factor 3 subunit CB [auth C]547Homo sapiensMutation(s): 0 
Gene Names: EIF3CEIF3S8
Find proteins for Q99613 (Homo sapiens)
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PHAROS:  Q99613
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Eukaryotic translation initiation factor 3 subunit EC [auth E]422Homo sapiensMutation(s): 0 
Gene Names: EIF3EEIF3S6INT6
Find proteins for P60228 (Homo sapiens)
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PHAROS:  P60228
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Eukaryotic translation initiation factor 3 subunit FD [auth F]327Homo sapiensMutation(s): 0 
Gene Names: EIF3FEIF3S5
EC: 3.4.19.12
Find proteins for O00303 (Homo sapiens)
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PHAROS:  O00303
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Eukaryotic translation initiation factor 3 subunit HE [auth H]343Homo sapiensMutation(s): 0 
Gene Names: EIF3HEIF3S3
Find proteins for O15372 (Homo sapiens)
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PHAROS:  O15372
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
Eukaryotic translation initiation factor 3 subunit KF [auth K]208Homo sapiensMutation(s): 0 
Gene Names: EIF3KEIF3S12ARG134HSPC029MSTP001PTD001
Find proteins for Q9UBQ5 (Homo sapiens)
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PHAROS:  Q9UBQ5
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
Eukaryotic translation initiation factor 3 subunit LG [auth L]540Homo sapiensMutation(s): 0 
Gene Names: EIF3LEIF3EIPEIF3S6IPHSPC021HSPC025MSTP005
Find proteins for Q9Y262 (Homo sapiens)
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
Eukaryotic translation initiation factor 3 subunit MH [auth M]364Homo sapiensMutation(s): 0 
Gene Names: EIF3MHFLB5PCID1GA17PNAS-125
Find proteins for Q7L2H7 (Homo sapiens)
Explore Q7L2H7 
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PHAROS:  Q7L2H7
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 9.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2014-10-08 
  • Released Date: 2014-10-22 
  • Deposition Author(s): Erzberger, J.P., Ban, N.
  • This entry supersedes: 3J7J

Revision History  (Full details and data files)

  • Version 1.0: 2014-10-22
    Type: Initial release
  • Version 1.1: 2018-07-18
    Changes: Data collection