3BK8

Urate oxidase aza-xanthine complex in cyanide

• PDB DOI: https://doi.org/10.2210/pdb3BK8/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Aspergillus flavus
• Expression System: Saccharomyces cerevisiae
• Mutation(s): No 


• Deposited: 2007-12-06 Released: 2008-08-12 
• Deposition Author(s): Gabison, L., Prange, T., Colloc'h, N., El Hajji, M., Castro, B., Chiadmi, M.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.230 
• R-Value Work: 0.200 
• R-Value Observed: 0.200 

Literature

Structural analysis of urate oxidase in complex with its natural substrate inhibited by cyanide: Mechanistic implications

Gabison, L., Prange, T., Colloc'h, N., El Hajji, M., Castro, B., Chiadmi, M.

(2008) BMC Struct Biol 8: 32-32

• PubMed: 18638417 
• DOI: https://doi.org/10.1186/1472-6807-8-32
• Primary Citation of Related Structures:  
  3BJP, 3BK8


• PubMed Abstract: 
  

  Urate oxidase (EC 1.7.3.3 or UOX) catalyzes the conversion of uric acid and gaseous molecular oxygen to 5-hydroxyisourate and hydrogen peroxide, in the absence of cofactor or particular metal cation. The functional enzyme is a homo-tetramer with four active sites located at dimeric interfaces.

---

Organizational Affiliation: 

LCRB, UMR CNRS 8015, Université Paris Descartes, 4 avenue de l'Observatoire, 75270 Paris cedex 06, France. [e-mail]

Biological Assembly 1  

Global Symmetry: Dihedral - D2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 34.33 kDa 
• Atom Count: 2,671 
• Modelled Residue Count: 295 
• Deposited Residue Count: 301 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Uricase	A	301	Aspergillus flavus	Mutation(s): 0  EC: 1.7.3.3
UniProt
Find proteins for Q00511 (Aspergillus flavus) Explore Q00511  Go to UniProtKB:  Q00511

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
AZA	C [auth A]	8-AZAXANTHINE C4 H3 N5 O2 KVGVQTOQSNJTJI-UHFFFAOYSA-N
NA	B [auth A]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.230 
• R-Value Work: 0.200 
• R-Value Observed: 0.200 
• Space Group: I 2 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 79.718	α = 90
b = 95.105	β = 90
c = 103.957	γ = 90

Software Package:

Software Name	Purpose
SHELX	model building
SHELXL-97	refinement
MAR345dtb	data collection
MAR345	data collection
MOSFLM	data reduction
FFT	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2008-08-12 
Deposition Author(s): Gabison, L., Prange, T., Colloc'h, N., El Hajji, M., Castro, B., Chiadmi, M.

Revision History  

• Version 1.0: 2008-08-12
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2017-10-25
  Changes: Refinement description
• Version 1.3: 2023-11-01
  Changes: Data collection, Database references, Derived calculations, Refinement description