4US8

Aldehyde Oxidoreductase from Desulfovibrio gigas (MOP), soaked with benzaldehyde


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.49 Å
  • R-Value Free: 0.122 
  • R-Value Work: 0.091 
  • R-Value Observed: 0.093 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.4 of the entry. See complete history


Literature

Aromatic Aldehydes at the Active Site of Aldehyde Oxidoreductase from Desulfovibrio Gigas: Reactivity and Molecular Details of the Enzyme-Substrate and Enzyme-Product Interaction.

Correia, H.D.Marangon, J.Brondino, C.D.Moura, J.J.G.Romao, M.J.Gonzalez, P.J.Santos-Silva, T.

(2015) J Biol Inorg Chem 20: 219

  • DOI: https://doi.org/10.1007/s00775-014-1196-4
  • Primary Citation of Related Structures:  
    4US8, 4US9, 4USA

  • PubMed Abstract: 

    Desulfovibrio gigas aldehyde oxidoreductase (DgAOR) is a mononuclear molybdenum-containing enzyme from the xanthine oxidase (XO) family, a group of enzymes capable of catalyzing the oxidative hydroxylation of aldehydes and heterocyclic compounds. The kinetic studies reported in this work showed that DgAOR catalyzes the oxidative hydroxylation of aromatic aldehydes, but not heterocyclic compounds. NMR spectroscopy studies using (13)C-labeled benzaldehyde confirmed that DgAOR catalyzes the conversion of aldehydes to the respective carboxylic acids. Steady-state kinetics in solution showed that high concentrations of the aromatic aldehydes produce substrate inhibition and in the case of 3-phenyl propionaldehyde a suicide substrate behavior. Hydroxyl-substituted aromatic aldehydes present none of these behaviors but the kinetic parameters are largely affected by the position of the OH group. High-resolution crystallographic structures obtained from single crystals of active-DgAOR soaked with benzaldehyde showed that the side chains of Phe425 and Tyr535 are important for the stabilization of the substrate in the active site. On the other hand, the X-ray data of DgAOR soaked with trans-cinnamaldehyde showed a cinnamic acid molecule in the substrate channel. The X-ray data of DgAOR soaked with 3-phenyl propionaldehyde showed clearly how high substrate concentrations inactivate the enzyme by binding covalently at the surface of the enzyme and blocking the substrate channel. The different reactivity of DgAOR versus aldehyde oxidase and XO towards aromatic aldehydes and N-heterocyclic compounds is explained on the basis of the present kinetic and structural data.


  • Organizational Affiliation

    UCIBIO@REQUIMTE, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516, Caparica, Portugal.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ALDEHYDE OXIDOREDUCTASE907Megalodesulfovibrio gigasMutation(s): 0 
EC: 1.2.99.7
UniProt
Find proteins for Q46509 (Megalodesulfovibrio gigas)
Explore Q46509 
Go to UniProtKB:  Q46509
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ46509
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 8 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
PCD
Query on PCD

Download Ideal Coordinates CCD File 
M [auth A](MOLYBDOPTERIN-CYTOSINE DINUCLEOTIDE-S,S)-DIOXO-AQUA-MOLYBDENUM(V)
C19 H26 Mo N8 O16 P2 S2
YEBYDVFRFUQMER-MQPNXHJTSA-L
FES
Query on FES

Download Ideal Coordinates CCD File 
B [auth A],
C [auth A]
FE2/S2 (INORGANIC) CLUSTER
Fe2 S2
NIXDOXVAJZFRNF-UHFFFAOYSA-N
PGE
Query on PGE

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D [auth A]TRIETHYLENE GLYCOL
C6 H14 O4
ZIBGPFATKBEMQZ-UHFFFAOYSA-N
HBX
Query on HBX

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N [auth A],
O [auth A],
P [auth A],
Q [auth A]
benzaldehyde
C7 H6 O
HUMNYLRZRPPJDN-UHFFFAOYSA-N
BCT
Query on BCT

Download Ideal Coordinates CCD File 
F [auth A]BICARBONATE ION
C H O3
BVKZGUZCCUSVTD-UHFFFAOYSA-M
IPA
Query on IPA

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E [auth A]ISOPROPYL ALCOHOL
C3 H8 O
KFZMGEQAYNKOFK-UHFFFAOYSA-N
CL
Query on CL

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K [auth A],
L [auth A]
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
MG
Query on MG

Download Ideal Coordinates CCD File 
G [auth A],
H [auth A],
I [auth A],
J [auth A]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
CSO
Query on CSO
A
L-PEPTIDE LINKINGC3 H7 N O3 SCYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.49 Å
  • R-Value Free: 0.122 
  • R-Value Work: 0.091 
  • R-Value Observed: 0.093 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 143.229α = 90
b = 143.229β = 90
c = 162.25γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-10-08
    Type: Initial release
  • Version 1.1: 2015-03-04
    Changes: Database references
  • Version 1.2: 2019-01-30
    Changes: Data collection, Experimental preparation
  • Version 1.3: 2019-02-06
    Changes: Data collection, Experimental preparation
  • Version 1.4: 2024-01-10
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description