Experimental Data Snapshot

  • Resolution: 2.50 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.197 

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This is version 1.6 of the entry. See complete history


Crystal structures of ribosome anti-association factor IF6.

Groft, C.M.Beckmann, R.Sali, A.Burley, S.K.

(2000) Nat Struct Biol 7: 1156-1164

  • DOI: https://doi.org/10.1038/82017
  • Primary Citation of Related Structures:  
    1G61, 1G62

  • PubMed Abstract: 

    Ribosome anti-association factor eIF6 (originally named according to translation initiation terminology as eukaryotic initiation factor 6) binds to the large ribosomal subunit, thereby preventing inappropriate interactions with the small subunit during initiation of protein synthesis. We have determined the X-ray structures of two IF6 homologs, Methanococcus jannaschii archaeal aIF6 and Sacchromyces cerevisiae eIF6, revealing a phylogenetically conserved 25 kDa protein consisting of five quasi identical alpha/beta subdomains arrayed about a five-fold axis of pseudosymmetry. Yeast eIF6 prevents ribosomal subunit association. Comparative protein structure modeling with other known archaeal and eukaryotic homologs demonstrated the presence of two conserved surface regions, one or both of which may bind the large ribosomal subunit.

  • Organizational Affiliation

    Laboratories of Molecular Biophysics, The Rockefeller University, 1230 York Avenue, New York, New York 10021, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
RIBOSOME ANTI-ASSOCIATION FACTOR EIF6224Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: TIF6
Find proteins for Q12522 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore Q12522 
Go to UniProtKB:  Q12522
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ12522
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.50 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.197 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 56.257α = 90
b = 56.257β = 90
c = 171.703γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-11-22
    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: 2018-01-31
    Changes: Experimental preparation
  • Version 1.4: 2018-04-04
    Changes: Data collection
  • Version 1.5: 2021-02-03
    Changes: Database references, Structure summary
  • Version 1.6: 2023-08-09
    Changes: Data collection, Database references, Derived calculations, Refinement description