6HYD

Rea1 Wild type ADP state (tail part)


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.90 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

The CryoEM structure of the Saccharomyces cerevisiae ribosome maturation factor Rea1.

Sosnowski, P.Urnavicius, L.Boland, A.Fagiewicz, R.Busselez, J.Papai, G.Schmidt, H.

(2018) Elife 7

  • DOI: 10.7554/eLife.39163
  • Primary Citation of Related Structures:  
    6I27, 6I26, 6HYD, 6HYP

  • PubMed Abstract: 
  • The biogenesis of 60S ribosomal subunits is initiated in the nucleus where rRNAs and proteins form pre-60S particles. These pre-60S particles mature by transiently interacting with various assembly factors. The ~5000 amino-acid AAA+ ATPase Rea1 (or Midasin) generates force to mechanically remove assembly factors from pre-60S particles, which promotes their export to the cytosol ...

    The biogenesis of 60S ribosomal subunits is initiated in the nucleus where rRNAs and proteins form pre-60S particles. These pre-60S particles mature by transiently interacting with various assembly factors. The ~5000 amino-acid AAA+ ATPase Rea1 (or Midasin) generates force to mechanically remove assembly factors from pre-60S particles, which promotes their export to the cytosol. Here we present three Rea1 cryoEM structures. We visualise the Rea1 engine, a hexameric ring of AAA+ domains, and identify an α-helical bundle of AAA2 as a major ATPase activity regulator. The α-helical bundle interferes with nucleotide-induced conformational changes that create a docking site for the substrate binding MIDAS domain on the AAA +ring. Furthermore, we reveal the architecture of the Rea1 linker, which is involved in force generation and extends from the AAA+ ring. The data presented here provide insights into the mechanism of one of the most complex ribosome maturation factors.


    Organizational Affiliation

    Université de Strasbourg, Illkirch, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Midasin,Midasin,MidasinA1676Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: MDN1REA1YLR106CL2901L8004.13
UniProt
Find proteins for Q12019 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore Q12019 
Go to UniProtKB:  Q12019
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.90 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
French National Research AgencyFranceATIP-Avenir

Revision History  (Full details and data files)

  • Version 1.0: 2018-12-12
    Type: Initial release
  • Version 1.1: 2019-07-24
    Changes: Data collection, Source and taxonomy
  • Version 1.2: 2019-12-11
    Changes: Other
  • Version 1.3: 2020-09-30
    Changes: Database references