2OOV

Crystal Structure of Hansenula polymorpha amine oxidase to 1.7 Angstroms


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.178 
  • R-Value Work: 0.147 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Exploring molecular oxygen pathways in Hansenula polymorpha copper-containing amine oxidase

Johnson, B.J.Cohen, J.Welford, R.W.Pearson, A.R.Schulten, K.Klinman, J.P.Wilmot, C.M.

(2007) J.Biol.Chem. 282: 17767-17776

  • DOI: 10.1074/jbc.M701308200
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The accessibility of large substrates to buried enzymatic active sites is dependent upon the utilization of proteinaceous channels. The necessity of these channels in the case of small substrates is questionable because diffusion through the protein ...

    The accessibility of large substrates to buried enzymatic active sites is dependent upon the utilization of proteinaceous channels. The necessity of these channels in the case of small substrates is questionable because diffusion through the protein matrix is often assumed. Copper amine oxidases contain a buried protein-derived quinone cofactor and a mononuclear copper center that catalyze the conversion of two substrates, primary amines and molecular oxygen, to aldehydes and hydrogen peroxide, respectively. The nature of molecular oxygen migration to the active site in the enzyme from Hansenula polymorpha is explored using a combination of kinetic, x-ray crystallographic, and computational approaches. A crystal structure of H. polymorpha amine oxidase in complex with xenon gas, which serves as an experimental probe for molecular oxygen binding sites, reveals buried regions of the enzyme suitable for transient molecular oxygen occupation. Calculated O(2) free energy maps using copper amine oxidase crystal structures in the absence of xenon correspond well with later experimentally observed xenon sites in these systems, and allow the visualization of O(2) migration routes of differing probabilities within the protein matrix. Site-directed mutagenesis designed to block individual routes has little effect on overall k(cat)/K(m) (O(2)), supporting multiple dynamic pathways for molecular oxygen to reach the active site.


    Organizational Affiliation

    Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, Minnesota 55455, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Peroxisomal copper amine oxidase
A, B
660Pichia angustaMutation(s): 0 
Gene Names: AMO
EC: 1.4.3.21
Find proteins for P12807 (Pichia angusta)
Go to UniProtKB:  P12807
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Peroxisomal copper amine oxidase
C, D, E, F
660Pichia angustaMutation(s): 0 
Gene Names: AMO
EC: 1.4.3.21
Find proteins for P12807 (Pichia angusta)
Go to UniProtKB:  P12807
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
C, F
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
GOL
Query on GOL

Download SDF File 
Download CCD File 
A, B, C, D, E, F
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
CU
Query on CU

Download SDF File 
Download CCD File 
A, B, C, D, E, F
COPPER (II) ION
Cu
JPVYNHNXODAKFH-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
SME
Query on SME
A, B
L-PEPTIDE LINKINGC5 H11 N O3 SMET
TPQ
Query on TPQ
A, B, C, D, E, F
L-PEPTIDE LINKINGC9 H9 N O5TYR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.178 
  • R-Value Work: 0.147 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 104.146α = 90.00
b = 223.082β = 95.77
c = 104.248γ = 90.00
Software Package:
Software NamePurpose
HKL-3000data reduction
SCALEPACKdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
HKL-3000data collection
DENZOdata reduction
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-04-10
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Non-polymer description, Version format compliance
  • Version 1.3: 2012-04-18
    Type: Derived calculations
  • Version 1.4: 2017-10-18
    Type: Refinement description