5I2T

Domain characterization of the WD protein Pwp2 and their relevance in ribosome biogenesis


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.543 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.213 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Pwp2 mediates UTP-B assembly via two structurally independent domains.

Boissier, F.Schmidt, C.M.Linnemann, J.Fribourg, S.Perez-Fernandez, J.

(2017) Sci Rep 7: 3169-3169

  • DOI: 10.1038/s41598-017-03034-y

  • PubMed Abstract: 
  • The SSU processome constitutes a large ribonucleoprotein complex involved in the early steps of ribosome biogenesis. UTP-B is one of the first multi-subunit protein complexes that associates with the pre-ribosomal RNA to form the SSU processome. To u ...

    The SSU processome constitutes a large ribonucleoprotein complex involved in the early steps of ribosome biogenesis. UTP-B is one of the first multi-subunit protein complexes that associates with the pre-ribosomal RNA to form the SSU processome. To understand the molecular basis of the hierarchical assembly of the SSU-processome, we have undergone a structural and functional analysis of the UTP-B subunit Pwp2p. We show that Pwp2p is required for the proper assembly of UTP-B and for a productive association of UTP-B with pre-rRNA. These two functions are mediated by two distinct structural domains. The N-terminal domain of Pwp2p folds into a tandem WD-repeat (tWD) that associates with Utp21p, Utp18p, and Utp6p to form a core complex. The CTDs of Pwp2p and Utp21p mediate the assembly of the heterodimer Utp12p:Utp13p that is required for the stable incorporation of the UTP-B complex in the SSU processome. Finally, we provide evidence suggesting a role of UTP-B as a platform for the binding of assembly factors during the maturation of 20S rRNA precursors.


    Organizational Affiliation

    Université de Bordeaux, INSERM U1212, CNRS 5320, Bordeaux, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Periodic tryptophan protein 2
A
742Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: PWP2 (UTP1)
Find proteins for P25635 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to Gene View: PWP2
Go to UniProtKB:  P25635
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.543 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.213 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 70.830α = 90.00
b = 76.040β = 90.00
c = 191.350γ = 90.00
Software Package:
Software NamePurpose
BALBESphasing
PHENIXrefinement
XDSdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-06-21
    Type: Initial release