L-Amino acid oxidase/monooxygenase from Pseudomonas sp. AIU 813 - L-ornithine complex

Experimental Data Snapshot

  • Resolution: 2.00 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.199 

Starting Model: experimental
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Ligand Structure Quality Assessment 

This is version 1.2 of the entry. See complete history


Ligand complex structures of l-amino acid oxidase/monooxygenase from

Im, D.Matsui, D.Arakawa, T.Isobe, K.Asano, Y.Fushinobu, S.

(2018) FEBS Open Bio 8: 314-324

  • DOI: https://doi.org/10.1002/2211-5463.12387
  • Primary Citation of Related Structures:  
    5YB6, 5YB7, 5YB8

  • PubMed Abstract: 

    l-Amino acid oxidase/monooxygenase from Pseudomonas sp. AIU 813 (l-AAO/MOG) catalyzes both the oxidative deamination and oxidative decarboxylation of the α-group of l-Lys to produce a keto acid and amide, respectively. l-AAO/MOG exhibits limited specificity for l-amino acid substrates with a basic side chain. We previously determined its ligand-free crystal structure and identified a key residue for maintaining the dual activities. Here, we determined the structures of l-AAO/MOG complexed with l-Lys, l-ornithine, and l-Arg and revealed its substrate recognition. Asp238 is located at the ceiling of a long hydrophobic pocket and forms a strong interaction with the terminal, positively charged group of the substrates. A mutational analysis on the D238A mutant indicated that the interaction is critical for substrate binding but not for catalytic control between the oxidase/monooxygenase activities. The catalytic activities of the D238E mutant unexpectedly increased, while the D238F mutant exhibited altered substrate specificity to long hydrophobic substrates. In the ligand-free structure, there are two channels connecting the active site and solvent, and a short region located at the dimer interface is disordered. In the l-Lys complex structure, a loop region is displaced to plug the channels. Moreover, the disordered region in the ligand-free structure forms a short helix in the substrate complex structures and creates the second binding site for the substrate. It is assumed that the amino acid substrate enters the active site of l-AAO/MOG through this route. The atomic coordinates and structure factors (codes 5YB6, 5YB7, and 5YB8) have been deposited in the Protein Data Bank (http://wwpdb.org/). (l-amino acid oxidase), (lysine 2-monooxygenase).

  • Organizational Affiliation

    Department of Biotechnology The University of Tokyo Japan.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
L-amino acid oxidase/monooxygenase
A, B, C, D
580Pseudomonas sp. AIU 813Mutation(s): 0 
Gene Names: laaomog
Find proteins for W6JQJ6 (Pseudomonas sp. AIU 813)
Explore W6JQJ6 
Go to UniProtKB:  W6JQJ6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupW6JQJ6
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on FAD

Download Ideal Coordinates CCD File 
E [auth A],
H [auth B],
K [auth C],
N [auth D]
C27 H33 N9 O15 P2
Query on ORN

Download Ideal Coordinates CCD File 
F [auth A]
G [auth A]
I [auth B]
J [auth B]
L [auth C]
F [auth A],
G [auth A],
I [auth B],
J [auth B],
L [auth C],
M [auth C],
O [auth D],
P [auth D]
C5 H12 N2 O2
Experimental Data & Validation

Experimental Data

  • Resolution: 2.00 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.199 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 94.6α = 90
b = 132.9β = 111.5
c = 101.9γ = 90
Software Package:
Software NamePurpose
XDSdata processing
XSCALEdata scaling
PDB_EXTRACTdata extraction

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2018-02-07
    Type: Initial release
  • Version 1.1: 2018-03-21
    Changes: Database references
  • Version 1.2: 2023-11-22
    Changes: Data collection, Database references, Refinement description