lysozyme (1sec) and UV lasr excited fluorescence

Experimental Data Snapshot

  • Resolution: 1.50 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.196 

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This is version 1.2 of the entry. See complete history


Uv Laser-Excited Fluorescence as a Tool for the Visualization of Protein Crystals Mounted in Loops.

Vernede, X.Lavault, B.Ohana, J.Nurizzo, D.Joly, J.Jacquamet, L.Felisaz, F.Cipriani, F.Bourgeois, D.

(2006) Acta Crystallogr D Biol Crystallogr 62: 253

  • DOI: https://doi.org/10.1107/S0907444905041429
  • Primary Citation of Related Structures:  
    2C8O, 2C8P, 2C8Q, 2C8R

  • PubMed Abstract: 

    Structural proteomics has promoted the rapid development of automated protein structure determination using X-ray crystallography. Robotics are now routinely used along the pipeline from genes to protein structures. However, a bottleneck still remains. At synchrotron beamlines, the success rate of automated sample alignment along the X-ray beam is limited by difficulties in visualization of protein crystals, especially when they are small and embedded in mother liquor. Despite considerable improvement in optical microscopes, the use of visible light transmitted or reflected by the sample may result in poor or misleading contrast. Here, the endogenous fluorescence from aromatic amino acids has been used to identify even tiny or weakly fluorescent crystals with a high success rate. The use of a compact laser at 266 nm in combination with non-fluorescent sample holders provides an efficient solution to collect high-contrast fluorescence images in a few milliseconds and using standard camera optics. The best image quality was obtained with direct illumination through a viewing system coaxial with the UV beam. Crystallographic data suggest that the employed UV exposures do not generate detectable structural damage.

  • Organizational Affiliation

    LCCP, UMR 5075, IBS-CEA/CNRS/UJF, Grenoble, France.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
LYSOZYME C129Gallus gallusMutation(s): 0 
Find proteins for P00698 (Gallus gallus)
Explore P00698 
Go to UniProtKB:  P00698
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00698
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.50 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.196 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 78.73α = 90
b = 78.73β = 90
c = 36.916γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-03-08
    Type: Initial release
  • Version 1.1: 2014-11-12
    Changes: Derived calculations, Non-polymer description, Other, Source and taxonomy, Version format compliance
  • Version 1.2: 2023-12-13
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description