1R4U

URATE OXIDASE FROM ASPERGILLUS FLAVUS COMPLEXED WITH ITS INHIBITOR OXONIC ACID


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.182 
  • R-Value Work: 0.157 

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Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history


Literature

Complexed and ligand-free high-resolution structures of urate oxidase (Uox) from Aspergillus flavus: a reassignment of the active-site binding mode.

Retailleau, P.Colloc'h, N.Vivares, D.Bonnete, F.Castro, B.El-Hajji, M.Mornon, J.P.Monard, G.Prange, T.

(2004) Acta Crystallogr D Biol Crystallogr 60: 453-462

  • DOI: 10.1107/S0907444903029718
  • Primary Citation of Related Structures:  
    1R4S, 1R4U, 1R51, 1R56

  • PubMed Abstract: 
  • High-resolution X-ray structures of the complexes of Aspergillus flavus urate oxidase (Uox) with three inhibitors, 8-azaxanthin (AZA), 9-methyl uric acid (MUA) and oxonic acid (OXC), were determined in an orthorhombic space group (I222). In addition, the ligand-free enzyme was also crystallized in a monoclinic form (P2(1)) and its structure determined ...

    High-resolution X-ray structures of the complexes of Aspergillus flavus urate oxidase (Uox) with three inhibitors, 8-azaxanthin (AZA), 9-methyl uric acid (MUA) and oxonic acid (OXC), were determined in an orthorhombic space group (I222). In addition, the ligand-free enzyme was also crystallized in a monoclinic form (P2(1)) and its structure determined. Higher accuracy in the three new enzyme-inhibitor complex structures (Uox-AZA, Uox-MUA and Uox-OXC) with respect to the previously determined structure of Uox-AZA (PDB code 1uox) leads to a reversed position of the inhibitor in the active site of the enzyme. The corrected anchoring of the substrate (uric acid) allows an improvement in the understanding of the enzymatic mechanism of urate oxidase.


    Related Citations: 
    • Crystal Structure of the Protein Drug Urate Oxidase-Inhibitor Complex at 2.05 A Resolution
      Colloc'h, N., El Hajji, M., Bachet, B., L'Hermite, G., Schiltz, M., Prange, T., Castro, B., Mornon, J.-P.
      (1997) Nat Struct Biol 4: 947

    Organizational Affiliation

    LURE, Centre Universitaire Paris-Sud, Bâtiment 209D, BP 34, 91898 Orsay CEDEX, France. retailleau@lure.u-psud.fr



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
UricaseA301Aspergillus flavusMutation(s): 1 
Gene Names: uaZuox
EC: 1.7.3.3
UniProt
Find proteins for Q00511 (Aspergillus flavus)
Explore Q00511 
Go to UniProtKB:  Q00511
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
OXC (Subject of Investigation/LOI)
Query on OXC

Download Ideal Coordinates CCD File 
B [auth A]OXONIC ACID
C4 H5 N3 O4
IRFZLMWJJPULRF-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SAC
Query on SAC
AL-PEPTIDE LINKINGC5 H9 N O4SER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.182 
  • R-Value Work: 0.157 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 79.702α = 90
b = 96.075β = 90
c = 105.589γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
BUSTER-TNTrefinement

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-03-02
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2018-02-28
    Changes: Database references, Structure summary