1YYW

Crystal structure of RNase III from Aquifex aeolicus complexed with double stranded RNA at 2.8-Angstrom Resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.314 
  • R-Value Work: 0.243 
  • R-Value Observed: 0.246 

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This is version 1.2 of the entry. See complete history


Literature

Intermediate states of ribonuclease III in complex with double-stranded RNA

Gan, J.Tropea, J.E.Austin, B.P.Court, D.L.Waugh, D.S.Ji, X.

(2005) Structure 13: 1435-1442

  • DOI: 10.1016/j.str.2005.06.014
  • Primary Citation of Related Structures:  
    1YYK, 1YYO, 1YYW, 1YZ9

  • PubMed Abstract: 
  • Bacterial ribonuclease III (RNase III) can affect RNA structure and gene expression in either of two ways: as a processing enzyme that cleaves double-stranded (ds) RNA, or as a binding protein that binds but does not cleave dsRNA. We previously proposed a model of the catalytic complex of RNase III with dsRNA based on three crystal structures, including the endonuclease domain of RNase III with and without bound metal ions and a dsRNA binding protein complexed with dsRNA ...

    Bacterial ribonuclease III (RNase III) can affect RNA structure and gene expression in either of two ways: as a processing enzyme that cleaves double-stranded (ds) RNA, or as a binding protein that binds but does not cleave dsRNA. We previously proposed a model of the catalytic complex of RNase III with dsRNA based on three crystal structures, including the endonuclease domain of RNase III with and without bound metal ions and a dsRNA binding protein complexed with dsRNA. We also reported a noncatalytic assembly observed in the crystal structure of an RNase III mutant, which binds but does not cleave dsRNA, complexed with dsRNA. We hypothesize that the RNase III*dsRNA complex can exist in two functional forms, a catalytic complex and a noncatalytic assembly, and that in between the two forms there may be intermediate states. Here, we present four crystal structures of RNase III complexed with dsRNA, representing possible intermediates.


    Organizational Affiliation

    Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, Maryland 21702, USA.



Macromolecules

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Ribonuclease IIII [auth A],
J [auth B],
K [auth C],
L [auth D]
221Aquifex aeolicusMutation(s): 0 
Gene Names: rnc
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
Protein Feature View
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  • Reference Sequence

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Entity ID: 1
MoleculeChainsLengthOrganismImage
5'-R(*AP*AP*AP*UP*AP*UP*AP*UP*AP*UP*UP*U)-3'12N/A
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.314 
  • R-Value Work: 0.243 
  • R-Value Observed: 0.246 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 86.428α = 90
b = 95.906β = 90
c = 166.004γ = 90
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-11-22
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance