Crystal Structure of the Precursor of Galactose Oxidase

Experimental Data Snapshot

  • Resolution: 1.40 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.176 

wwPDB Validation   3D Report Full Report

Ligand Structure Quality Assessment 

This is version 1.5 of the entry. See complete history


Crystal structure of the precursor of galactose oxidase: an unusual self-processing enzyme.

Firbank, S.J.Rogers, M.S.Wilmot, C.M.Dooley, D.M.Halcrow, M.A.Knowles, P.F.McPherson, M.J.Phillips, S.E.

(2001) Proc Natl Acad Sci U S A 98: 12932-12937

  • DOI: https://doi.org/10.1073/pnas.231463798
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Galactose oxidase (EC ) is a monomeric enzyme that contains a single copper ion and catalyses the stereospecific oxidation of primary alcohols to their corresponding aldehydes. The protein contains an unusual covalent thioether bond between a tyrosine, which acts as a radical center during the two-electron reaction, and a cysteine. The enzyme is produced in a precursor form lacking the thioether bond and also possessing an additional 17-aa pro-sequence at the N terminus. Previous work has shown that the aerobic addition of Cu(2+) to the precursor is sufficient to generate fully processed mature enzyme. The structure of the precursor protein has been determined to 1.4 A, revealing the location of the pro-sequence and identifying structural differences between the precursor and the mature protein. Structural alignment of the precursor and mature forms of galactose oxidase shows that five regions of main chain and some key residues of the active site differ significantly between the two forms. The precursor structure provides a starting point for modeling the chemistry of thioether bond formation and pro-sequence cleavage.

  • Organizational Affiliation

    Astbury Centre for Structural Molecular Biology, School of Biochemistry and Molecular Biology, University of Leeds, Leeds, LS2 9JT, United Kingdom.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Galactose Oxidase Precursor656Fusarium sp.Mutation(s): 0 
Find proteins for P0CS93 (Gibberella zeae)
Explore P0CS93 
Go to UniProtKB:  P0CS93
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0CS93
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.40 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.176 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.313α = 90
b = 89.516β = 90
c = 93.96γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report

Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2001-11-07
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Data collection, Derived calculations, Structure summary
  • Version 1.4: 2023-08-16
    Changes: Data collection, Database references, Refinement description, Structure summary
  • Version 1.5: 2023-11-15
    Changes: Data collection