3P26

Crystal structure of S. cerevisiae Hbs1 protein (apo-form), a translational GTPase involved in RNA quality control pathways and interacting with Dom34/Pelota


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.216 
  • R-Value Observed: 0.219 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Dissection of Dom34-Hbs1 reveals independent functions in two RNA quality control pathways.

van den Elzen, A.M.Henri, J.Lazar, N.Gas, M.E.Durand, D.Lacroute, F.Nicaise, M.van Tilbeurgh, H.Seraphin, B.Graille, M.

(2010) Nat Struct Mol Biol 17: 1446-1452

  • DOI: 10.1038/nsmb.1963
  • Primary Citation of Related Structures:  
    3P26, 3P27

  • PubMed Abstract: 
  • Eukaryotic cells have several quality control pathways that rely on translation to detect and degrade defective RNAs. Dom34 and Hbs1 are two proteins that are related to translation termination factors and are involved in no-go decay (NGD) and nonfunctional 18S ribosomal RNA (rRNA) decay (18S NRD) pathways that eliminate RNAs that cause strong ribosomal stalls ...

    Eukaryotic cells have several quality control pathways that rely on translation to detect and degrade defective RNAs. Dom34 and Hbs1 are two proteins that are related to translation termination factors and are involved in no-go decay (NGD) and nonfunctional 18S ribosomal RNA (rRNA) decay (18S NRD) pathways that eliminate RNAs that cause strong ribosomal stalls. Here we present the structure of Hbs1 with and without GDP and a low-resolution model of the Dom34-Hbs1 complex. This complex mimics complexes of the elongation factor and transfer RNA or of the translation termination factors eRF1 and eRF3, supporting the idea that it binds to the ribosomal A-site. We show that nucleotide binding by Hbs1 is essential for NGD and 18S NRD. Mutations in Hbs1 that disrupted the interaction between Dom34 and Hbs1 strongly impaired NGD but had almost no effect on 18S NRD. Hence, NGD and 18S NRD could be genetically uncoupled, suggesting that mRNA and rRNA in a stalled translation complex may not always be degraded simultaneously.


    Organizational Affiliation

    Equipe Labellisée La Ligue, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGMBC), Illkirch, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Elongation factor 1 alpha-like proteinA, B483Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: HBS1YKR084CYKR404
UniProt
Find proteins for P32769 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P32769 
Go to UniProtKB:  P32769
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.216 
  • R-Value Observed: 0.219 
  • Space Group: P 42 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 110.631α = 90
b = 110.631β = 90
c = 188.115γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
MOLREPphasing
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-11-17
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2012-03-14
    Changes: Structure summary