3II2

Structure of ORF157 from Acidianus Filamentous Virus 1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.170 
  • R-Value Observed: 0.173 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

ORF157 from the archaeal virus Acidianus filamentous virus 1 defines a new class of nuclease

Goulet, A.Pina, M.Redder, P.Prangishvili, D.Vera, L.Lichiere, J.Leulliot, N.van Tilbeurgh, H.Ortiz-Lombardia, M.Campanacci, V.Cambillau, C.

(2010) J Virol 84: 5025-5031

  • DOI: 10.1128/JVI.01664-09
  • Primary Citation of Related Structures:  
    3II2, 3II3, 3ILD, 3ILE

  • PubMed Abstract: 
  • Acidianus filamentous virus 1 (AFV1) (Lipothrixviridae) is an enveloped filamentous virus that was characterized from a crenarchaeal host. It infects Acidianus species that thrive in the acidic hot springs (>85 degrees C and pH <3) of Yellowstone National Park, WY ...

    Acidianus filamentous virus 1 (AFV1) (Lipothrixviridae) is an enveloped filamentous virus that was characterized from a crenarchaeal host. It infects Acidianus species that thrive in the acidic hot springs (>85 degrees C and pH <3) of Yellowstone National Park, WY. The AFV1 20.8-kb, linear, double-stranded DNA genome encodes 40 putative open reading frames whose sequences generally show little similarity to other genes in the sequence databases. Because three-dimensional structures are more conserved than sequences and hence are more effective at revealing function, we set out to determine protein structures from putative AFV1 open reading frames (ORF). The crystal structure of ORF157 reveals an alpha+beta protein with a novel fold that remotely resembles the nucleotidyltransferase topology. In vitro, AFV1-157 displays a nuclease activity on linear double-stranded DNA. Alanine substitution mutations demonstrated that E86 is essential to catalysis. AFV1-157 represents a novel class of nuclease, but its exact role in vivo remains to be determined.


    Organizational Affiliation

    Architecture et Fonction des Macromolcéules Biologiques, CNRS and Universités d'Aix-Marseille I & II, Marseille, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Putative uncharacterized proteinA157Acidianus filamentous virus 1Mutation(s): 0 
Gene Names: AFV1 orf157
UniProt
Find proteins for Q70LE6 (Acidianus filamentous virus 1 (isolate United States/Yellowstone))
Explore Q70LE6 
Go to UniProtKB:  Q70LE6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ70LE6
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.170 
  • R-Value Observed: 0.173 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 65.637α = 90
b = 65.637β = 90
c = 85.568γ = 120
Software Package:
Software NamePurpose
ADSCdata collection
SHELXSphasing
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
PHENIXrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-03-23
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2014-02-05
    Changes: Database references