2X7N

Mechanism of eIF6s anti-association activity


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 11.8 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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This is version 1.3 of the entry. See complete history


Literature

Mechanism of Eif6-Mediated Inhibition of Ribosomal Subunit Joining.

Gartmann, M.Blau, M.Armache, J.-P.Mielke, T.Topf, M.Beckmann, R.

(2010) J Biol Chem 285: 14848

  • DOI: https://doi.org/10.1074/jbc.C109.096057
  • Primary Citation of Related Structures:  
    2X7N

  • PubMed Abstract: 

    During the process of ribosomal assembly, the essential eukaryotic translation initiation factor 6 (eIF6) is known to act as a ribosomal anti-association factor. However, a molecular understanding of the anti-association activity of eIF6 is still missing. Here we present the cryo-electron microscopy reconstruction of a complex of the large ribosomal subunit with eukaryotic eIF6 from Saccharomyces cerevisiae. The structure reveals that the eIF6 binding site involves mainly rpL23 (L14p in Escherichia coli). Based on our structural data, we propose that the mechanism of the anti-association activity of eIF6 is based on steric hindrance of intersubunit bridge formation around the dynamic bridge B6.


  • Organizational Affiliation

    Department of Biochemistry, Gene Center and Center for Integrated Protein Science (CiPSM), Ludwig-Maximilians-Universität München, Feodor-Lynen-Strasse 25, 81377 Munich, Germany.


Macromolecules

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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
EUKARYOTIC TRANSLATION INITIATION FACTOR 6224Saccharomyces cerevisiaeMutation(s): 0 
UniProt
Find proteins for Q12522 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Go to UniProtKB:  Q12522
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UniProt GroupQ12522
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
60S RIBOSOMAL PROTEIN L23132Saccharomyces cerevisiaeMutation(s): 0 
UniProt
Find proteins for P0CX41 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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UniProt GroupP0CX41
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
60S RIBOSOMAL PROTEIN L24-A56Saccharomyces cerevisiaeMutation(s): 0 
UniProt
Find proteins for P04449 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Go to UniProtKB:  P04449
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UniProt GroupP04449
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Entity ID: 1
MoleculeChains LengthOrganismImage
SARCIN-RICIN LOOP28Saccharomyces cerevisiae
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 11.8 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONSPIDER

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-03-31
    Type: Initial release
  • Version 1.1: 2013-07-17
    Changes: Derived calculations, Other, Version format compliance
  • Version 1.2: 2017-08-30
    Changes: Data collection, Structure summary
  • Version 1.3: 2018-10-03
    Changes: Data collection, Derived calculations