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 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history. 

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

  • 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 si ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Elongation factor 1 alpha-like protein
A
592Schizosaccharomyces pombe (strain 972 / ATCC 24843)Mutation(s): 0 
Gene Names: hbs1
Find proteins for O74774 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
Go to UniProtKB:  O74774
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Protein dom34
B
390Schizosaccharomyces pombe (strain 972 / ATCC 24843)Mutation(s): 0 
Gene Names: dom34
EC: 3.1.-.-
Find proteins for Q9USL5 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
Go to UniProtKB:  Q9USL5
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.74 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.247 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 76.741α = 90.00
b = 113.423β = 90.00
c = 124.742γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
PDB_EXTRACTdata extraction
SCALAdata scaling

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

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

Revision History 

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