1I4S

CRYSTAL STRUCTURE OF RNASE III ENDONUCLEASE DOMAIN FROM AQUIFEX AEOLICUS AT 2.15 ANGSTROM RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.212 
  • R-Value Observed: 0.207 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Crystallographic and modeling studies of RNase III suggest a mechanism for double-stranded RNA cleavage.

Blaszczyk, J.Tropea, J.E.Bubunenko, M.Routzahn, K.M.Waugh, D.S.Court, D.L.Ji, X.

(2001) Structure 9: 1225-1236

  • DOI: https://doi.org/10.1016/s0969-2126(01)00685-2
  • Primary Citation of Related Structures:  
    1I4S, 1JFZ

  • PubMed Abstract: 

    Aquifex aeolicus Ribonuclease III (Aa-RNase III) belongs to the family of Mg(2+)-dependent endonucleases that show specificity for double-stranded RNA (dsRNA). RNase III is conserved in all known bacteria and eukaryotes and has 1-2 copies of a 9-residue consensus sequence, known as the RNase III signature motif. The bacterial RNase III proteins are the simplest, consisting of two domains: an N-terminal endonuclease domain, followed by a double-stranded RNA binding domain (dsRBD). The three-dimensional structure of the dsRBD in Escherichia coli RNase III has been elucidated; no structural information is available for the endonuclease domain of any RNase III.


  • Organizational Affiliation

    Macromolecular Crystallography Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD 21702, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
RIBONUCLEASE III
A, B
147Aquifex aeolicusMutation(s): 0 
EC: 3.1.26.3
UniProt
Find proteins for O67082 (Aquifex aeolicus (strain VF5))
Explore O67082 
Go to UniProtKB:  O67082
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO67082
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.212 
  • R-Value Observed: 0.207 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 46.157α = 90
b = 51.188β = 90
c = 123.468γ = 90
Software Package:
Software NamePurpose
SHARPphasing
SHELXL-97refinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2001-12-19
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2023-08-30
    Changes: Data collection, Database references, Structure summary