4WJS

Crystal structure of Rsa4 from Chaetomium thermophilum


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.165 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A network of assembly factors is involved in remodeling rRNA elements during preribosome maturation.

Baler, J.Paternoga, H.Holdermann, I.Thoms, M.Granneman, S.Barrio-Garcia, C.Nyarko, A.Stier, G.Clark, S.A.Schraivogel, D.Kallas, M.Beckmann, R.Tollervey, D.Barbar, E.Sinning, I.Hurt, E.

(2014) J.Cell Biol. 207: 481-498

  • DOI: 10.1083/jcb.201408111
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Eukaryotic ribosome biogenesis involves ∼200 assembly factors, but how these contribute to ribosome maturation is poorly understood. Here, we identify a network of factors on the nascent 60S subunit that actively remodels preribosome structure. At it ...

    Eukaryotic ribosome biogenesis involves ∼200 assembly factors, but how these contribute to ribosome maturation is poorly understood. Here, we identify a network of factors on the nascent 60S subunit that actively remodels preribosome structure. At its hub is Rsa4, a direct substrate of the force-generating ATPase Rea1. We show that Rsa4 is connected to the central protuberance by binding to Rpl5 and to ribosomal RNA (rRNA) helix 89 of the nascent peptidyl transferase center (PTC) through Nsa2. Importantly, Nsa2 binds to helix 89 before relocation of helix 89 to the PTC. Structure-based mutations of these factors reveal the functional importance of their interactions for ribosome assembly. Thus, Rsa4 is held tightly in the preribosome and can serve as a "distribution box," transmitting remodeling energy from Rea1 into the developing ribosome. We suggest that a relay-like factor network coupled to a mechano-enzyme is strategically positioned to relocate rRNA elements during ribosome maturation.


    Organizational Affiliation

    Biochemistry Center of Heidelberg University, INF328, D-69120 Heidelberg, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Rsa4
A
485Chaetomium thermophilum (strain DSM 1495 / CBS 144.50 / IMI 039719)Mutation(s): 0 
Find proteins for G0SC29 (Chaetomium thermophilum (strain DSM 1495 / CBS 144.50 / IMI 039719))
Go to UniProtKB:  G0SC29
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.165 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 48.155α = 67.47
b = 48.832β = 88.39
c = 58.625γ = 62.65
Software Package:
Software NamePurpose
PHENIXrefinement
SCALAdata scaling
PHASERphasing
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-11-19
    Type: Initial release
  • Version 1.1: 2014-12-03
    Type: Database references
  • Version 1.2: 2014-12-10
    Type: Database references