Crystal structure of the Thermoplasma acidophilum Pelota protein

Experimental Data Snapshot

  • Resolution: 2.90 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.214 

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Structural and functional insights into dom34, a key component of no-go mRNA decay

Lee, H.H.Kim, Y.S.Kim, K.H.Heo, I.Kim, S.K.Kim, O.Kim, H.K.Yoon, J.Y.Kim, H.S.Kim, D.J.Lee, S.J.Yoon, H.J.Kim, S.J.Lee, B.G.Song, H.K.Kim, V.N.Park, C.M.Suh, S.W.

(2007) Mol Cell 27: 938-950

  • DOI: https://doi.org/10.1016/j.molcel.2007.07.019
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The yeast protein Dom34 is a key component of no-go decay, by which mRNAs with translational stalls are endonucleolytically cleaved and subsequently degraded. However, the identity of the endoribonuclease is unknown. Homologs of Dom34, called Pelota, are broadly conserved in eukaryotes and archaea. To gain insights into the structure and function of Dom34/Pelota, we have determined the structure of Pelota from Thermoplasma acidophilum (Ta Pelota) and investigated the ribonuclease activity of Dom34/Pelota. The structure of Ta Pelota is tripartite, and its domain 1 has the RNA-binding Sm fold. We have discovered that Ta Pelota has a ribonuclease activity and that its domain 1 is sufficient for the catalytic activity. We also demonstrate that domain 1 of Dom34 has an endoribonuclease activity against defined RNA substrates containing a stem loop, which supports a direct catalytic role of yeast Dom34 in no-go mRNA decay.

  • Organizational Affiliation

    Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 151-747, Korea.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cell division protein pelota related protein347Thermoplasma acidophilumMutation(s): 0 
Find proteins for Q9HJ74 (Thermoplasma acidophilum (strain ATCC 25905 / DSM 1728 / JCM 9062 / NBRC 15155 / AMRC-C165))
Explore Q9HJ74 
Go to UniProtKB:  Q9HJ74
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9HJ74
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.90 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.214 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 98.064α = 90
b = 98.064β = 90
c = 150.096γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-10-09
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2024-03-13
    Changes: Data collection, Database references