6EN7

Crystal structure of the ribosome assembly factor Nsa1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.403 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.178 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Visualizing the Assembly Pathway of Nucleolar Pre-60S Ribosomes.

Kater, L.Thoms, M.Barrio-Garcia, C.Cheng, J.Ismail, S.Ahmed, Y.L.Bange, G.Kressler, D.Berninghausen, O.Sinning, I.Hurt, E.Beckmann, R.

(2017) Cell 171: 1599-1610.e14

  • DOI: 10.1016/j.cell.2017.11.039
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Eukaryotic 60S ribosomal subunits are comprised of three rRNAs and ∼50 ribosomal proteins. The initial steps of their formation take place in the nucleolus, but, owing to a lack of structural information, this process is poorly understood. Using cryo ...

    Eukaryotic 60S ribosomal subunits are comprised of three rRNAs and ∼50 ribosomal proteins. The initial steps of their formation take place in the nucleolus, but, owing to a lack of structural information, this process is poorly understood. Using cryo-EM, we solved structures of early 60S biogenesis intermediates at 3.3 Å to 4.5 Å resolution, thereby providing insights into their sequential folding and assembly pathway. Besides revealing distinct immature rRNA conformations, we map 25 assembly factors in six different assembly states. Notably, the Nsa1-Rrp1-Rpf1-Mak16 module stabilizes the solvent side of the 60S subunit, and the Erb1-Ytm1-Nop7 complex organizes and connects through Erb1's meandering N-terminal extension, eight assembly factors, three ribosomal proteins, and three 25S rRNA domains. Our structural snapshots reveal the order of integration and compaction of the six major 60S domains within early nucleolar 60S particles developing stepwise from the solvent side around the exit tunnel to the central protuberance.


    Organizational Affiliation

    Gene Center Munich and Center of Integrated Protein Science-Munich (CiPS-M), Department of Biochemistry, Feodor-Lynen-Str. 25, University of Munich, 81377 Munich, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ribosome biogenesis protein NSA1
A
463Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: NSA1
Find proteins for P53136 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P53136
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.403 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.178 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 54.723α = 90.00
b = 81.100β = 90.00
c = 87.574γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
PHENIXrefinement
SCALAdata scaling
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-12-27
    Type: Initial release