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Updated: Jul 7, 2026
11:03
Measurement of Fatty Acid β-Oxidation in a Suspension of Freshly Isolated Mouse Hepatocytes
Published on: September 9, 2021
Structure and function of plant acyl-CoA oxidases
Susan Arent1, Valerie E Pye, Anette Henriksen
1Biostructure Group, Carlsberg Laboratory, Gamle Carlsberg Vej 10, DK-2500 Valby, Denmark.
Plant Physiology and Biochemistry : PPB
|February 15, 2008
Summary
Acyl-CoA oxidases and dehydrogenases initiate fatty acid beta-oxidation in peroxisomes and mitochondria, respectively. Enzyme structure and sequence comparisons reveal mechanisms controlling electron transfer and substrate specificity in lipid metabolism.
Area of Science:
- Biochemistry
- Molecular Biology
- Plant Physiology
Background:
- Fatty acid beta-oxidation is crucial for energy production and biosynthesis.
- This pathway occurs in both peroxisomes and mitochondria, utilizing distinct enzymes.
- Acyl-CoA oxidases and acyl-CoA dehydrogenases initiate this process in peroxisomes and mitochondria, respectively.
Purpose of the Study:
- To compare the structure and function of acyl-CoA oxidases and acyl-CoA dehydrogenases.
- To elucidate the mechanisms governing electron transfer and oxygen reactivity in these enzymes.
- To understand how these enzymes discriminate between different substrates.
Main Methods:
- Comparative analysis of enzyme structures and sequences.
- Bioinformatic approaches to study reaction mechanisms.
- Analysis of substrate-binding pockets and active site architecture.
Main Results:
- Distinct structural features dictate the distinct roles of peroxisomal and mitochondrial enzymes.
- Mechanistic insights into electron transfer pathways and oxygen utilization were identified.
- Key structural determinants for substrate specificity were highlighted.
Conclusions:
- Enzyme structure-function relationships explain the compartmentalization of fatty acid oxidation.
- Understanding these enzymes is vital for comprehending lipid metabolism and plant hormone synthesis.
- Comparative enzymology provides a framework for dissecting metabolic pathways.
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