1UON

REOVIRUS POLYMERASE LAMBDA-3 LOCALIZED BY ELECTRON CRYOMICROSCOPY OF VIRIONS AT 7.6-A RESOLUTION


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 7.60 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 2.0 of the entry. See complete history


Literature

Reovirus Polymerase Lambda3 Localized by Cryo-Electron Microscopy of Virions at a Resolution of 7.6 A

Zhang, X.Walker, S.B.Chipman, P.R.Nibert, M.L.Baker, T.S.

(2003) Nat Struct Biol 10: 1011

  • DOI: 10.1038/nsb1009
  • Primary Citation of Related Structures:  
    1UON

  • PubMed Abstract: 
  • Reovirus is an icosahedral, double-stranded (ds) RNA virus that uses viral polymerases packaged within the viral core to transcribe its ten distinct plus-strand RNAs. To localize these polymerases, the structure of the reovirion was refined to a resolution of 7 ...

    Reovirus is an icosahedral, double-stranded (ds) RNA virus that uses viral polymerases packaged within the viral core to transcribe its ten distinct plus-strand RNAs. To localize these polymerases, the structure of the reovirion was refined to a resolution of 7.6 A by cryo-electron microscopy (cryo-EM) and three-dimensional (3D) image reconstruction. X-ray crystal models of reovirus proteins, including polymerase lambda 3, were then fitted into the density map. Each copy of lambda 3 was found anchored to the inner surface of the icosahedral core shell, making major contacts with three molecules of shell protein lambda 1 and overlapping, but not centering on, a five-fold axis. The overlap explains why only one copy of lambda 3 is bound per vertex. lambda 3 is furthermore oriented with its transcript exit channel facing a small channel through the lambda 1 shell, suggesting how the nascent RNA is passed into the large external cavity of the pentameric capping enzyme complex formed by protein lambda 2.


    Organizational Affiliation

    Department of Biological Sciences, Purdue University, West Lafayette, Indiana 47907, USA.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
MINOR CORE PROTEIN LAMBDA 3A1267Reovirus sp.Mutation(s): 0 
EC: 2.7.7.48
UniProt
Find proteins for Q8V1A3 (Reovirus sp)
Explore Q8V1A3 
Go to UniProtKB:  Q8V1A3
Protein Feature View
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  • Reference Sequence
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 2
    MoleculeChainsLengthOrganismImage
    5'-R(*GP*GP*GP*GP*GP*)-3'B5synthetic construct
    Protein Feature View
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    • Reference Sequence
    • Find similar nucleic acids by:  Sequence   |   Structure
    • Entity ID: 3
      MoleculeChainsLengthOrganismImage
      5'-R(*UP*AP*GP*CP*CP*CP*CP*CP*)-3'C8synthetic construct
      Protein Feature View
      Expand
      • Reference Sequence
      Small Molecules
      Ligands 2 Unique
      IDChainsName / Formula / InChI Key2D Diagram3D Interactions
      CH1
      Query on CH1

      Download Ideal Coordinates CCD File 
      D [auth A], E [auth A], F [auth A]3'-DEOXY-CYTIDINE-5'-TRIPHOSPHATE
      C9 H16 N3 O13 P3
      CHKFLBOLYREYDO-SHYZEUOFSA-N
       Ligand Interaction
      MN
      Query on MN

      Download Ideal Coordinates CCD File 
      G [auth A], H [auth A]MANGANESE (II) ION
      Mn
      WAEMQWOKJMHJLA-UHFFFAOYSA-N
       Ligand Interaction
      Experimental Data & Validation

      Experimental Data

      • Method: ELECTRON MICROSCOPY
      • Resolution: 7.60 Å
      • Aggregation State: PARTICLE 
      • Reconstruction Method: SINGLE PARTICLE 

      Structure Validation

      View Full Validation Report



      Entry History 

      Deposition Data

      Revision History  (Full details and data files)

      • Version 1.0: 2003-11-13
        Type: Initial release
      • Version 1.1: 2011-05-08
        Changes: Version format compliance
      • Version 1.2: 2011-07-13
        Changes: Version format compliance
      • Version 2.0: 2018-10-03
        Changes: Atomic model, Data collection, Derived calculations, Source and taxonomy