3FIM

Crystal structure of aryl-alcohol-oxidase from Pleurotus eryingii


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.55 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.173 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Novel structural features in the GMC family of oxidoreductases revealed by the crystal structure of fungal aryl-alcohol oxidase

Fernandez, I.S.Ruiz-Duenas, F.J.Santillana, E.Ferreira, P.Martinez, M.J.Martinez, A.T.Romero, A.

(2009) Acta Crystallogr.,Sect.D 65: 1196-1205

  • DOI: 10.1107/S0907444909035860
  • Also Cited By: 5OC1

  • PubMed Abstract: 
  • Lignin biodegradation, a key step in carbon recycling in land ecosystems, is carried out by white-rot fungi through an H(2)O(2)-dependent process defined as enzymatic combustion. Pleurotus eryngii is a selective lignin-degrading fungus that produces ...

    Lignin biodegradation, a key step in carbon recycling in land ecosystems, is carried out by white-rot fungi through an H(2)O(2)-dependent process defined as enzymatic combustion. Pleurotus eryngii is a selective lignin-degrading fungus that produces H(2)O(2) during redox cycling of p-anisylic compounds involving the secreted flavoenzyme aryl-alcohol oxidase (AAO). Here, the 2.4 A resolution X-ray crystal structure of this oxidoreductase, which catalyzes dehydrogenation reactions on various primary polyunsaturated alcohols, yielding the corresponding aldehydes, is reported. The AAO crystal structure was solved by single-wavelength anomalous diffraction of a selenomethionine derivative obtained by Escherichia coli expression and in vitro folding. This monomeric enzyme is composed of two domains, the overall folding of which places it into the GMC (glucose-methanol-choline oxidase) oxidoreductase family, and a noncovalently bound FAD cofactor. However, two additional structural elements exist in the surroundings of its active site that modulate the access of substrates; these are absent in the structure of the model GMC oxidoreductase glucose oxidase. The folding of these novel elements gives rise to a funnel-like hydrophobic channel that connects the solvent region to the buried active-site cavity of AAO. This putative active-site cavity is located in front of the re side of the FAD isoalloxazine ring and near two histidines (His502 and His546) that could contribute to alcohol activation as catalytic bases. Moreover, three aromatic side chains from two phenylalanines (Phe397 and Phe502) and one tyrosine (Tyr92) at the inner region of the channel form an aromatic gate that may regulate the access of the enzyme substrates to the active site as well as contribute to the recognition of the alcohols that can effectively be oxidized by AAO.


    Organizational Affiliation

    Centro de Investigaciones Biológicas, CSIC, E-28040 Madrid, Spain.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Aryl-alcohol oxidase
B
566Pleurotus eryngiiGene Names: aao
EC: 1.1.3.7
Find proteins for O94219 (Pleurotus eryngii)
Go to UniProtKB:  O94219
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FAD
Query on FAD

Download SDF File 
Download CCD File 
B
FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.55 Å
  • R-Value Free: 0.206 
  • R-Value Work: 0.173 
  • Space Group: P 64 2 2
Unit Cell:
Length (Å)Angle (°)
a = 180.226α = 90.00
b = 180.226β = 90.00
c = 160.407γ = 120.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
SHELXSphasing
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2008-12-12 
  • Released Date: 2009-11-03 
  • Deposition Author(s): Fernandez, I.S.

Revision History 

  • Version 1.0: 2009-11-03
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance