1WAC

Back-priming mode of Phi6 RNA-dependent RNA polymerase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.241 
  • R-Value Observed: 0.241 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Back-Priming Mode of Phi6 RNA-Dependent RNA Polymerase

Laurila, M.R.L.Salgado, P.S.Stuart, D.I.Grimes, J.M.Bamford, D.H.

(2005) J Gen Virol 86: 521

  • DOI: 10.1099/vir.0.80492-0
  • Primary Citation of Related Structures:  
    1WAC

  • PubMed Abstract: 
  • The RNA-dependent RNA polymerase of the double-stranded RNA bacteriophage phi6 is capable of primer-independent initiation, as are many RNA polymerases. The structure of this polymerase revealed an initiation platform, composed of a loop in the C-terminal domain (QYKW, aa 629-632), that was essential for de novo initiation ...

    The RNA-dependent RNA polymerase of the double-stranded RNA bacteriophage phi6 is capable of primer-independent initiation, as are many RNA polymerases. The structure of this polymerase revealed an initiation platform, composed of a loop in the C-terminal domain (QYKW, aa 629-632), that was essential for de novo initiation. A similar element has been identified in hepatitis C virus RNA-dependent RNA polymerase. Biochemical studies have addressed the role of this platform, revealing that a mutant version can utilize a back-priming initiation mechanism, where the 3' terminus of the template adopts a hairpin-like conformation. Here, the mechanism of back-primed initiation is studied further by biochemical and structural methods.


    Organizational Affiliation

    Institute of Biotechnology and Department of Biological and Environmental Sciences, Viikki Biocenter, PO Box 56 (Viikinkaari 5), 00014 University of Helsinki, Finland.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
P2 PROTEINA, B, C662Pseudomonas virus phi6Mutation(s): 1 
Gene Names: P2
EC: 2.7.7.48
UniProt
Find proteins for P11124 (Pseudomonas phage phi6)
Explore P11124 
Go to UniProtKB:  P11124
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.241 
  • R-Value Observed: 0.241 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 76.579α = 90
b = 105.851β = 98.86
c = 157.712γ = 90
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
CNSphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-01-27
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance