Biological Assembly 1  

 3D View: Structure | Electron Density

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 54.00 kDa 
• Atom Count: 4269 
• Modelled Residue Count: 485 
• Deposited Residue Count: 485 
• Unique protein chains: 1

4WJS

Crystal structure of Rsa4 from Chaetomium thermophilum

• DOI: 10.2210/pdb4WJS/pdb

• Classification: BIOSYNTHETIC PROTEIN
• Organism(s): Chaetomium thermophilum
• Expression System: Saccharomyces cerevisiae
• Mutation(s): No 


• Deposited: 2014-10-01 Released: 2014-11-19 
• Deposition Author(s): Holdermann, I., Bassler, J., Hurt, E., Sinning, I.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.211 
• R-Value Work: 0.165 
• R-Value Observed: 0.168 

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

• PubMed: 25404745 
• DOI: 10.1083/jcb.201408111
• Primary Citation of Related Structures:  
  2MVF, 4WJS, 4WJU, 4WJV


• 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 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.

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Organizational Affiliation: 

Biochemistry Center of Heidelberg University, INF328, D-69120 Heidelberg, Germany [e-mail] [e-mail] [e-mail].

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Rsa4	A	485	Chaetomium thermophilum	Mutation(s): 0  Gene Names: CTHT_0055700
Find proteins for G0SC29 (Chaetomium thermophilum (strain DSM 1495 / CBS 144.50 / IMI 039719)) Explore G0SC29  Go to UniProtKB:  G0SC29

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.211 
• R-Value Work: 0.165 
• R-Value Observed: 0.168 
• Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 48.155	α = 67.47
b = 48.832	β = 88.39
c = 58.625	γ = 62.65

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
SCALA	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2014-10-01 
• Released Date: 2014-11-19 
Deposition Author(s): Holdermann, I., Bassler, J., Hurt, E., Sinning, I.

Revision History  

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