7PBG

4-ethylphenol oxidase from Gulosibacter chungangensis: native structure


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.182 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Discovery, Biocatalytic Exploration and Structural Analysis of a 4-Ethylphenol Oxidase from Gulosibacter chungangensis.

Alvigini, L.Gran-Scheuch, A.Guo, Y.Trajkovic, M.Saifuddin, M.Fraaije, M.W.Mattevi, A.

(2021) Chembiochem 22: 3225-3233

  • DOI: https://doi.org/10.1002/cbic.202100457
  • Primary Citation of Related Structures:  
    7PBG, 7PBI

  • PubMed Abstract: 

    The vanillyl-alcohol oxidase (VAO) family is a rich source of biocatalysts for the oxidative bioconversion of phenolic compounds. Through genome mining and sequence comparisons, we found that several family members lack a generally conserved catalytic aspartate. This finding led us to study a VAO-homolog featuring a glutamate residue in place of the common aspartate. This 4-ethylphenol oxidase from Gulosibacter chungangensis (Gc4EO) shares 42 % sequence identity with VAO from Penicillium simplicissimum, contains the same 8α-N 3 -histidyl-bound FAD and uses oxygen as electron acceptor. However, Gc4EO features a distinct substrate scope and product specificity as it is primarily effective in the dehydrogenation of para-substituted phenols with little generation of hydroxylated products. The three-dimensional structure shows that the characteristic glutamate side chain creates a closely packed environment that may limit water accessibility and thereby protect from hydroxylation. With its high thermal stability, well defined structural properties and high expression yields, Gc4EO may become a catalyst of choice for the specific dehydrogenation of phenolic compounds bearing small substituents.


  • Organizational Affiliation

    Department of Biology and Biotechnology "Lazzaro Spallanzani", University of Pavia, Via Ferrata 9, 27100, Pavia, Italy.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
FAD-binding oxidoreductase
A, B
529Gulosibacter chungangensisMutation(s): 0 
Gene Names: F8O05_00770
UniProt
Find proteins for A0A7J5BGR1 (Gulosibacter chungangensis)
Explore A0A7J5BGR1 
Go to UniProtKB:  A0A7J5BGR1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A7J5BGR1
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.182 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 151.134α = 90
b = 96.08β = 115.65
c = 87.636γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
Aimlessdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
European Union (EU)Bio Based Industries Joint Undertaking under the European Union's Horizon 2020 research and innovation program under Grant Agreement No. 837890 (SMARTBOX)

Revision History  (Full details and data files)

  • Version 1.0: 2021-09-29
    Type: Initial release
  • Version 1.1: 2021-11-24
    Changes: Database references
  • Version 1.2: 2024-01-31
    Changes: Data collection, Refinement description