3MCA

Structure of the Dom34-Hbs1 Complex and implications for its role in No-Go decay


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.74 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.247 
  • R-Value Observed: 0.249 

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Literature

Structure of the Dom34-Hbs1 complex and implications for no-go decay

Chen, L.Muhlrad, D.Hauryliuk, V.Cheng, Z.Lim, M.K.Shyp, V.Parker, R.Song, H.

(2010) Nat Struct Mol Biol 17: 1233-1240

  • DOI: 10.1038/nsmb.1922
  • Primary Citation of Related Structures:  
    3MCA

  • PubMed Abstract: 
  • No-go decay (NGD) targets mRNAs with stalls in translation elongation for endonucleolytic cleavage in a process involving the Dom34 and Hbs1 proteins. The crystal structure of a Schizosaccharomyces pombe Dom34-Hbs1 complex reveals an overall shape similar to that of eRF1-eRF3-GTP and EF-Tu-tRNA-GDPNP ...

    No-go decay (NGD) targets mRNAs with stalls in translation elongation for endonucleolytic cleavage in a process involving the Dom34 and Hbs1 proteins. The crystal structure of a Schizosaccharomyces pombe Dom34-Hbs1 complex reveals an overall shape similar to that of eRF1-eRF3-GTP and EF-Tu-tRNA-GDPNP. Similarly to eRF1 and GTP binding to eRF3, Dom34 and GTP bind to Hbs1 with strong cooperativity, and Dom34 acts as a GTP-dissociation inhibitor (GDI). A marked conformational change in Dom34 occurs upon binding to Hbs1, leading Dom34 to resemble a portion of a tRNA and to position a conserved basic region in a position expected to be near the peptidyl transferase center. These results support the idea that the Dom34-Hbs1 complex functions to terminate translation and thereby commit mRNAs to NGD. Consistent with this role, NGD at runs of arginine codons, which cause a strong block to elongation, is independent of the Dom34-Hbs1 complex.


    Organizational Affiliation

    Laboratory of Macromolecular Structure, Institute of Molecular and Cell Biology, Proteos, Singapore.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Elongation factor 1 alpha-like proteinA592Schizosaccharomyces pombeMutation(s): 0 
Find proteins for O74774 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
Explore O74774 
Go to UniProtKB:  O74774
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Protein dom34B390Schizosaccharomyces pombeMutation(s): 0 
EC: 3.1
Find proteins for Q9USL5 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
Explore Q9USL5 
Go to UniProtKB:  Q9USL5
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.74 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.247 
  • R-Value Observed: 0.249 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 76.741α = 90
b = 113.423β = 90
c = 124.742γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
REFMACrefinement
PDB_EXTRACTdata extraction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2010-03-28 
  • Released Date: 2010-10-06 
  • Deposition Author(s): Chen, L., Song, H.

Revision History  (Full details and data files)

  • Version 1.0: 2010-10-06
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance