1TSF

Crystal Structure of the Archaeal homolog of Human RNase P Protein Rpp29 from Archaeoglobus fulgidus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.250 

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This is version 1.2 of the entry. See complete history

Literature

Crystal structure of archaeal ribonuclease P protein aRpp29 from Archaeoglobus fulgidus.

Sidote, D.J.Heideker, J.Hoffman, D.W.

(2004) Biochemistry 43: 14128-14138

  • DOI: 10.1021/bi048578z
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The crystal structure of ribonuclease P protein aRpp29 from the sulfate-reducing hyperthermophile Archaeoglobus fulgidus was determined at 1.7 A resolution using X-ray diffraction methods. The central feature of this archaeal protein is a sheet of si ...

    The crystal structure of ribonuclease P protein aRpp29 from the sulfate-reducing hyperthermophile Archaeoglobus fulgidus was determined at 1.7 A resolution using X-ray diffraction methods. The central feature of this archaeal protein is a sheet of six antiparallel beta-strands twisted around a conserved hydrophobic core. Residues near the N- and C-termini form helical structures that are oriented in an antiparallel manner. A comparison of conserved amino acids indicates that archaeal aRpp29 is homologous to human ribonuclease P protein Rpp29. The aRpp29 protein is structurally similar to bacterial transcription factors Hfq and NusG, as well as the Sm and Sm-like RNA-associated proteins from eukarya. The crystal structure of A. fulgidus aRpp29 differs from the previously reported solution structure, where NMR data did not detect the helices and indicated that approximately 40% of the residues are relatively flexible or disordered. Circular dichroism data indicate that the protein has less helical content than the amount observed in the crystal, suggesting that in solution the helical regions are unfolded or in equilibrium between folded and unfolded forms; this hypothesis is consistent with amide proton exchange rate data. Surface residues that are conserved from archaea to humans and are likely to interact with the ribonuclease P RNA or other protein subunits are identified in the structure. The model of the aRpp29 protein defined by this work provides an essential step toward eventually understanding the overall architecture of ribonuclease P.


    Organizational Affiliation

    Department of Chemistry and Biochemistry, Institute for Cellular and Molecular Biology, University of Texas, Austin, Texas 78712, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ribonuclease P protein component 1
A
102Archaeoglobus fulgidus (strain ATCC 49558 / VC-16 / DSM 4304 / JCM 9628 / NBRC 100126)Mutation(s): 0 
Gene Names: rnp1
EC: 3.1.26.5
Find proteins for O28362 (Archaeoglobus fulgidus (strain ATCC 49558 / VC-16 / DSM 4304 / JCM 9628 / NBRC 100126))
Go to UniProtKB:  O28362
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.250 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 39.565α = 90.00
b = 43.790β = 90.00
c = 49.235γ = 90.00
Software Package:
Software NamePurpose
CNSphasing
SCALEPACKdata scaling
CNSrefinement
DENZOdata reduction

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-10-12
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance