9AVH | pdb_00009avh

Crystal structure of an aryl-alcohol-oxidase from Bjerkandera adusta.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 
    0.188 (Depositor), 0.193 (DCC) 
  • R-Value Work: 
    0.143 (Depositor), 0.157 (DCC) 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.0 of the entry. See complete history


Literature

Unveiling the kinetic versatility of aryl-alcohol oxidases with different electron acceptors.

Serrano, A.Cinca-Fernando, P.Carro, J.Velazquez-Campoy, A.Martinez-Julvez, M.Martinez, A.T.Ferreira, P.

(2024) Front Bioeng Biotechnol 12: 1440598-1440598

  • DOI: https://doi.org/10.3389/fbioe.2024.1440598
  • Primary Citation of Related Structures:  
    9AVH

  • PubMed Abstract: 

    Introduction: Aryl-alcohol oxidase (AAO) shows a pronounced duality as oxidase and dehydrogenase similar to that described for other glucose-methanol-choline (GMC) oxidase/dehydrogenase superfamily proteins involved in lignocellulose decomposition. In this work, we detail the overall mechanism of AAOs from Pleurotus eryngii and Bjerkandera adusta for catalyzing the oxidation of natural aryl-alcohol substrates using either oxygen or quinones as electron acceptors and describe the crystallographic structure of AAO from B. adusta in complex with a product analogue. Methods: Kinetic studies with 4-methoxybenzyl and 3-chloro-4- methoxybenzyl alcohols, including both transient-state and steady-state analyses, along with interaction studies, provide insight into the oxidase and dehydrogenase mechanisms of these enzymes. Moreover, the resolution of the crystal structure of AAO from B. adusta allowed us to compare their overall folding and the structure of the active sites of both AAOs in relation to their activities. Results and Discussion: Although both enzymes show similar mechanistic properties, notable differences are highlighted in this study. In B. adusta , the AAO oxidase activity is limited by the reoxidation of the flavin, while in P. eryngii the slower step takes place during the reductive half-reaction, which determines the overall reaction rate. By contrast, dehydrogenase activity in both enzymes, irrespective of the alcohol participating in the reaction, is limited by the hydroquinone release from the active site. Despite these differences, both AAOs are more efficient as dehydrogenases, supporting the physiological role of this activity in lignocellulosic decay. This dual activity would allow these enzymes to adapt to different environments based on the available electron acceptors.


  • Organizational Affiliation
    • Centro de Investigaciones Biológicas Margarita Salas, CSIC, Madrid, Spain.

Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Aryl Alcohol Oxidase580Bjerkandera adustaMutation(s): 0 
EC: 1.1.3.7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
FAD (Subject of Investigation/LOI)
Query on FAD

Download Ideal Coordinates CCD File 
B [auth A]FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N
ANN (Subject of Investigation/LOI)
Query on ANN

Download Ideal Coordinates CCD File 
C [auth A]4-METHOXYBENZOIC ACID
C8 H8 O3
ZEYHEAKUIGZSGI-UHFFFAOYSA-N
SO4
Query on SO4

Download Ideal Coordinates CCD File 
I [auth A]
J [auth A]
K [auth A]
L [auth A]
M [auth A]
I [auth A],
J [auth A],
K [auth A],
L [auth A],
M [auth A],
N [auth A]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
GOL
Query on GOL

Download Ideal Coordinates CCD File 
D [auth A],
E [auth A],
F [auth A],
G [auth A],
H [auth A]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free:  0.188 (Depositor), 0.193 (DCC) 
  • R-Value Work:  0.143 (Depositor), 0.157 (DCC) 
Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 56.035α = 90
b = 82.746β = 90
c = 116.837γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
SCALAdata scaling
MOLREPphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Ministerio de Ciencia e Innovacion (MCIN)SpainTED2021-130803B-I00
Other governmentBiologia Estructural E35_23R

Revision History  (Full details and data files)

  • Version 1.0: 2025-01-22
    Type: Initial release