3J2I

Structure of late pre-60S ribosomal subunits with nuclear export factor Arx1 bound at the peptide exit tunnel


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 11.9 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure of the pre-60S ribosomal subunit with nuclear export factor Arx1 bound at the exit tunnel.

Bradatsch, B.Leidig, C.Granneman, S.Gnadig, M.Tollervey, D.Bottcher, B.Beckmann, R.Hurt, E.

(2012) Nat.Struct.Mol.Biol. 19: 1234-1241

  • DOI: 10.1038/nsmb.2438

  • PubMed Abstract: 
  • Preribosomal particles evolve in the nucleus through transient interaction with biogenesis factors before export to the cytoplasm. Here, we report the architecture of the late pre-60S particle, purified from Saccharomyces cerevisiae, through Arx1, a ...

    Preribosomal particles evolve in the nucleus through transient interaction with biogenesis factors before export to the cytoplasm. Here, we report the architecture of the late pre-60S particle, purified from Saccharomyces cerevisiae, through Arx1, a nuclear export factor with structural homology to methionine aminopeptidases, or its binding partner Alb1. Cryo-EM reconstruction of the Arx1 particle at 11.9-Ã… resolution reveals regions of extra density on the pre-60S particle attributed to associated biogenesis factors, confirming the immature state of the nascent subunit. One of these densities could be unambiguously assigned to Arx1. Immunoelectron microscopy and UV cross-linking localize Arx1 close to the ribosomal exit tunnel, in direct contact with ES27, a highly dynamic eukaryotic rRNA expansion segment. The binding of Arx1 at the exit tunnel may position this export factor to prevent premature recruitment of ribosome-associated factors active during translation.


    Organizational Affiliation

    Biochemistry Center, Universität Heidelberg, Heidelberg, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Eukaryotic translation initiation factor 6
B
245Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: TIF6 (CDC95)
Find proteins for Q12522 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  Q12522
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Proliferation-associated protein 2G4
A
394Homo sapiensMutation(s): 0 
Gene Names: PA2G4 (EBP1)
Find proteins for Q9UQ80 (Homo sapiens)
Go to Gene View: PA2G4
Go to UniProtKB:  Q9UQ80
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 11.9 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-11-07
    Type: Initial release
  • Version 1.1: 2012-11-28
    Type: Database references
  • Version 1.2: 2012-12-19
    Type: Database references
  • Version 1.3: 2018-07-18
    Type: Data collection