3PLE

urate oxidase under 0.5 MPa / 5 bars pressure of equimolar mixture xenon : nitrous oxide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.170 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Pressure-response analysis of anesthetic gases xenon and nitrous oxide on urate oxidase: a crystallographic study.

Marassio, G.Prange, T.David, H.N.Sopkova-de Oliveira Santos, J.Gabison, L.Delcroix, N.Abraini, J.H.Colloc'h, N.

(2011) Faseb J. 25: 2266-2275

  • DOI: 10.1096/fj.11-183046
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The remarkably safe anesthetics xenon (Xe) and, to lesser extent, nitrous oxide (N(2)O) possess neuroprotective properties in preclinical studies. To investigate the mechanisms of pharmacological action of these gases, which are still poorly known, w ...

    The remarkably safe anesthetics xenon (Xe) and, to lesser extent, nitrous oxide (N(2)O) possess neuroprotective properties in preclinical studies. To investigate the mechanisms of pharmacological action of these gases, which are still poorly known, we performed both crystallography under a large range of gas pressure and biochemical studies on urate oxidase, a prototype of globular gas-binding proteins whose activity is modulated by inert gases. We show that Xe and N(2)O bind to, compete for, and expand the volume of a hydrophobic cavity located just behind the active site of urate oxidase and further inhibit urate oxidase enzymatic activity. By demonstrating a significant relationship between the binding and biochemical effects of Xe and N(2)O, given alone or in combination, these data from structure to function highlight the mechanisms by which chemically and metabolically inert gases can alter protein function and produce their pharmacological effects. Interestingly, the effects of a Xe:N(2)O equimolar mixture were found to be equivalent to those of Xe alone, thereby suggesting that gas mixtures containing Xe and N(2)O could be an alternative and efficient neuroprotective strategy to Xe alone, whose widespread clinical use is limited due to the cost of production and availability of this gas.


    Organizational Affiliation

    Equipe de Recherche Technologique Interne (ERTi) 1083, Centre National de la Recherche Scientifique (CNRS), Centre Cyceron, Caen, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Uricase
A
302Aspergillus flavusMutation(s): 0 
Gene Names: uaZ (uox)
EC: 1.7.3.3
Find proteins for Q00511 (Aspergillus flavus)
Go to UniProtKB:  Q00511
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

Download SDF File 
Download CCD File 
A
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
N2O
Query on N2O

Download SDF File 
Download CCD File 
A
NITROUS OXIDE
NITROGEN OXIDE
N2 O
GQPLMRYTRLFLPF-UHFFFAOYSA-N
 Ligand Interaction
XE
Query on XE

Download SDF File 
Download CCD File 
A
XENON
Xe
FHNFHKCVQCLJFQ-UHFFFAOYSA-N
 Ligand Interaction
AZA
Query on AZA

Download SDF File 
Download CCD File 
A
8-AZAXANTHINE
C4 H3 N5 O2
KVGVQTOQSNJTJI-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
ACE
Query on ACE
A
NON-POLYMERC2 H4 O

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.170 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 80.298α = 90.00
b = 96.263β = 90.00
c = 105.493γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling
HKL-2000data collection
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-04-06
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-11-08
    Type: Refinement description