4ATS

Structure of the ORF273 protein from the Acidianus two-tailed virus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.85 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.268 
  • R-Value Observed: 0.272 

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This is version 1.1 of the entry. See complete history


Literature

Crystal Structure of Atv(Orf273), a New Fold for a Thermo-and Acido-Stable Protein from the Acidianus Two-Tailed Virus.

Felisberto-Rodrigues, C.Blangy, S.Goulet, A.Vestergaard, G.Cambillau, C.Garrett, R.A.Ortiz-Lombardia, M.

(2012) PLoS One 7: 45847

  • DOI: 10.1371/journal.pone.0045847
  • Primary Citation of Related Structures:  
    4ART, 4ATS

  • PubMed Abstract: 
  • Acidianus two-tailed virus (ATV) infects crenarchaea of the genus Acidianus living in terrestrial thermal springs at extremely high temperatures and low pH. ATV is a member of the Bicaudaviridae virus family and undergoes extra-cellular development of two tails, a process that is unique in the viral world ...

    Acidianus two-tailed virus (ATV) infects crenarchaea of the genus Acidianus living in terrestrial thermal springs at extremely high temperatures and low pH. ATV is a member of the Bicaudaviridae virus family and undergoes extra-cellular development of two tails, a process that is unique in the viral world. To understand this intriguing phenomenon, we have undertaken structural studies of ATV virion proteins and here we present the crystal structure of one of these proteins, ATV(ORF273). ATV(ORF273) forms tetramers in solution and a molecular envelope is provided for the tetramer, computed from small-angle X-ray scattering (SAXS) data. The crystal structure has properties typical of hyperthermostable proteins, including a relatively high number of salt bridges. However, the protein also exhibits flexible loops and surface pockets. Remarkably, ATV(ORF273) displays a new α + β protein fold, consistent with the absence of homologues of this protein in public sequence databases.


    Organizational Affiliation

    CNRS, Aix-Marseille Université, AFMB, UMR 7257, Campus de Luminy, Marseille, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
STRUCTURAL PROTEIN ORF273A293Acidianus two-tailed virusMutation(s): 0 
UniProt
Find proteins for Q3V4T6 (Acidianus two-tailed virus)
Explore Q3V4T6 
Go to UniProtKB:  Q3V4T6
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.85 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.268 
  • R-Value Observed: 0.272 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 101.013α = 90
b = 101.013β = 90
c = 52.982γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
XDSdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-10-24
    Type: Initial release
  • Version 1.1: 2019-05-29
    Changes: Data collection, Experimental preparation, Other