Feruloyl Esterase Domain of XYNY from Clostridium thermocellum before exposure to 266nm UV laser

Experimental Data Snapshot

  • Resolution: 1.90 Å
  • R-Value Free: 0.177 
  • R-Value Work: 0.157 
  • R-Value Observed: 0.159 

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In-house UV radiation-damage-induced phasing of selenomethionine-labeled protein structures.

Pereira, P.J.Royant, A.Panjikar, S.de Sanctis, D.

(2013) J Struct Biol 181: 89-94

  • DOI: https://doi.org/10.1016/j.jsb.2012.11.003
  • Primary Citation of Related Structures:  
    4BAG, 4BAI, 4BAJ, 4H35

  • PubMed Abstract: 

    Selenomethionine labeling is the most common technique used in protein crystallography to derivatize recombinant proteins for experimental phasing using anomalous scattering at tunable synchrotron beamlines. Recently, it has been shown that UV radiation depletes electron density of selenium atoms of selenomethionine residues and that UV radiation-damage-induced phasing (equivalent to single isomorphous replacement) protocol can be applied to calculate experimental phases. Here we present the straightforward integration of a UV source with an in-house diffractometer. We show how this setup can extend the capabilities of a sealed tube X-ray generator and be used for experimental phasing of selenium-labeled proteins.

  • Organizational Affiliation

    IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, Rua do Campo Alegre 823, 4150-180 Porto, Portugal.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Endo-1,4-beta-xylanase Y
A, B
297Acetivibrio thermocellusMutation(s): 0 
Gene Names: xynY
Find proteins for P51584 (Acetivibrio thermocellus)
Explore P51584 
Go to UniProtKB:  P51584
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP51584
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.90 Å
  • R-Value Free: 0.177 
  • R-Value Work: 0.157 
  • R-Value Observed: 0.159 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 65.37α = 90
b = 108.4β = 90
c = 112.86γ = 90
Software Package:
Software NamePurpose
CrysalisProdata collection
XDSdata reduction
XSCALEdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-12-12
    Type: Initial release
  • Version 1.1: 2013-02-20
    Changes: Database references
  • Version 1.2: 2017-11-15
    Changes: Refinement description