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Bioluminescence Imaging of NADPH Oxidase Activity in Different Animal Models
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Monoamine Oxidases.

Dale E Edmondson1, Claudia Binda2

  • 1Department of Biochemistry, Emory University, Atlanta, GA, USA.

Sub-Cellular Biochemistry
|February 22, 2018
PubMed
Summary

Monoamine oxidases A and B (MAO A and B) are key mitochondrial enzymes involved in neurotransmitter metabolism. Inhibiting MAO B is crucial for treating Parkinson's disease and offers neuroprotection by reducing oxidative stress.

Keywords:
Drug designFlavinInhibitorMonoamine oxidaseNeurodegenerationNeurotransmitterOxidative stress

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Area of Science:

  • Biochemistry
  • Pharmacology
  • Neuroscience

Background:

  • Monoamine oxidases A and B (MAO A and B) are mitochondrial flavoenzymes critical for neurotransmitter metabolism.
  • MAO B inhibitors like rasagiline are used in Parkinson's disease treatment.
  • MAO inhibition demonstrates neuroprotective effects by reducing oxidative stress.

Purpose of the Study:

  • To provide a comprehensive review of Monoamine oxidases A and B (MAO A and B).
  • To discuss the current understanding of MAOs as membrane drug targets.
  • To highlight the biochemical and structural characteristics of MAOs.

Main Methods:

  • Review of existing biochemical, structural, and pharmacological investigations.
  • Analysis of recombinant protein expression and characterization.
  • Examination of active site structures and ligand interactions.

Main Results:

  • MAOs are bitopic membrane proteins anchored via a C-terminal α-helix.
  • Conserved residues define the active site, with variations dictating substrate specificity.
  • Human MAO B exhibits a dynamic dual-cavity active site.

Conclusions:

  • MAOs are significant targets for therapeutic intervention, particularly in neurodegenerative diseases.
  • Understanding MAO structure-function relationships is key to developing novel inhibitors.
  • MAOs represent important membrane drug targets with ongoing research interest.