4ZOX

Crystal structure of the Saccharomyces cerevisiae Sqt1 bound to the N-terminus of the ribosomal protein L10


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.181 
  • R-Value Work: 0.146 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Co-translational capturing of nascent ribosomal proteins by their dedicated chaperones.

Pausch, P.Singh, U.Ahmed, Y.L.Pillet, B.Murat, G.Altegoer, F.Stier, G.Thoms, M.Hurt, E.Sinning, I.Bange, G.Kressler, D.

(2015) Nat Commun 6: 7494-7494

  • DOI: 10.1038/ncomms8494
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Exponentially growing yeast cells produce every minute >160,000 ribosomal proteins. Owing to their difficult physicochemical properties, the synthesis of assembly-competent ribosomal proteins represents a major challenge. Recent evidence highlights t ...

    Exponentially growing yeast cells produce every minute >160,000 ribosomal proteins. Owing to their difficult physicochemical properties, the synthesis of assembly-competent ribosomal proteins represents a major challenge. Recent evidence highlights that dedicated chaperone proteins recognize the N-terminal regions of ribosomal proteins and promote their soluble expression and delivery to the assembly site. Here we explore the intuitive possibility that ribosomal proteins are captured by dedicated chaperones in a co-translational manner. Affinity purification of four chaperones (Rrb1, Syo1, Sqt1 and Yar1) selectively enriched the mRNAs encoding their specific ribosomal protein clients (Rpl3, Rpl5, Rpl10 and Rps3). X-ray crystallography reveals how the N-terminal, rRNA-binding residues of Rpl10 are shielded by Sqt1's WD-repeat β-propeller, providing mechanistic insight into the incorporation of Rpl10 into pre-60S subunits. Co-translational capturing of nascent ribosomal proteins by dedicated chaperones constitutes an elegant mechanism to prevent unspecific interactions and aggregation of ribosomal proteins on their road to incorporation.


    Organizational Affiliation

    Unit of Biochemistry, Department of Biology, University of Fribourg, Chemin du Musée 10, Fribourg CH-1700, Switzerland.,LOEWE Center for Synthetic Microbiology (SYNMIKRO) and Department of Chemistry, Philipps-University Marburg, Hans-Meerwein-Straße, Marburg D-35043, Germany.,Heidelberg University Biochemistry Center (BZH), Im Neuenheimer Feld 328, Heidelberg D-61920, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ribosome assembly protein SQT1
A
381Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: SQT1
Find proteins for P35184 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P35184
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
60S ribosomal protein L10
B
28Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: RPL10 (GRC5, QSR1)
Find proteins for P41805 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to Gene View: RPL10
Go to UniProtKB:  P41805
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.181 
  • R-Value Work: 0.146 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 74.273α = 90.00
b = 89.252β = 100.28
c = 53.559γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
SCALAdata scaling
PHENIXrefinement
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-07-01
    Type: Initial release
  • Version 1.1: 2015-07-08
    Type: Database references