Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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Global Symmetry: Dihedral - D3  (3D View)
Global Stoichiometry: Homo 6-mer - A6 

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

Macromolecule Content

• Total Structure Weight: 21366.14 
• Atom Count: 1497 
• Residue Count: 201 
• Unique protein chains: 1

2ET1

Oxalate oxidase in complex with substrate analogue glycolate

• DOI: 10.2210/pdb2ET1/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Hordeum vulgare


• Deposited: 2005-10-27 Released: 2005-11-22 
• Deposition Author(s): Rose, R.-S., Opaleye, O., Woo, E.-J., Pickersgill, R.W.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.6 Å
• R-Value Free: 0.206 
• R-Value Work: 0.177 

Literature

Structural and spectroscopic studies shed light on the mechanism of oxalate oxidase

Opaleye, O., Rose, R.-S., Whittaker, M.M., Woo, E.-J., Whittaker, J.W., Pickersgill, R.W.

(2006) J.Biol.Chem. 281: 6428-6433

• PubMed: 16291738 
• DOI: 10.1074/jbc.M510256200
• Primary Citation of Related Structures:  
  2ETE, 2ET7


• PubMed Abstract: 
  

Oxalate oxidase (EC 1.2.3.4) catalyzes the conversion of oxalate and dioxygen to hydrogen peroxide and carbon dioxide. In this study, glycolate was used as a structural analogue of oxalate to investigate substrate binding in the crystalline enzyme. The observed monodentate binding of glycolate to the active site manganese ion of oxalate oxidase is consistent with a mechanism involving C-C bond cleavage driven by superoxide anion attack on a monodentate coordinated substrate. In this mechanism, the metal serves two functions: to organize the substrates (oxalate and dioxygen) and to transiently reduce dioxygen. The observed structure further implies important roles for specific active site residues (two asparagines and one glutamine) in correctly orientating the substrates and reaction intermediates for catalysis. Combined spectroscopic, biochemical, and structural analyses of mutants confirms the importance of the asparagine residues in organizing a functional active site complex.

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Organizational Affiliation: 

School of Biological and Chemical Sciences, Queen Mary, University of London, Mile End Road, London E1 4NS, United Kingdom.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Oxalate oxidase 1	A	201	Hordeum vulgare	Mutation(s): 0  EC: 1.2.3.4
Find proteins for P45850 (Hordeum vulgare) Go to UniProtKB:  P45850

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
MN	A	MANGANESE (II) ION Mn WAEMQWOKJMHJLA-UHFFFAOYSA-N
GLV	A	GLYOXYLIC ACID GLYOXALATE, GLYOXYLATE C2 H2 O3 HHLFWLYXYJOTON-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.6 Å
• R-Value Free: 0.206 
• R-Value Work: 0.177 
• Space Group: H 3 2

Unit Cell:

Length (Å)	Angle (°)
a = 96.302	α = 90.00
b = 96.302	β = 90.00
c = 108.133	γ = 120.00

Software Package:

Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
ADSC	data collection

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2005-10-27 
• Released Date: 2005-11-22 
• Deposition Author(s): Rose, R.-S., Opaleye, O., Woo, E.-J., Pickersgill, R.W.

Revision History 

• Version 1.0: 2005-11-22
  Type: Initial release
• Version 1.1: 2008-05-01
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Derived calculations, Version format compliance
• Version 1.3: 2017-10-18
  Type: Refinement description