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 1.4 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: https://doi.org/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. 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.


  • 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
MoleculeChains Sequence LengthOrganismDetailsImage
Uricase301Aspergillus flavusMutation(s): 1 
EC: 1.7.3.3
UniProt
Find proteins for Q00511 (Aspergillus flavus)
Explore Q00511 
Go to UniProtKB:  Q00511
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ00511
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
OXC
Query on OXC

Download Ideal Coordinates CCD File 
B [auth A]OXONIC ACID
C4 H5 N3 O4
IRFZLMWJJPULRF-UHFFFAOYSA-N
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
SAC
Query on SAC
A
L-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

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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
  • Version 1.4: 2023-08-23
    Changes: Data collection, Database references, Derived calculations, Refinement description