Gosset 3-ketoacyl-CoA thiolase, mitochondrial Overview
3-ketoacyl-CoA thiolase, mitochondrial (ACAA2), is a key mitochondrial enzyme that catalyzes the final step of the beta-oxidation pathway, cleaving 3-oxoacyl-CoA into acetyl-CoA and a shortened fatty acyl-CoA, thereby playing an essential role in converting fatty acids to energy. It belongs to the thiolase family and is required for efficient breakdown of medium- to long-chain fatty acids inside mitochondria; its deficiency leads to characteristic inborn errors of metabolism with impaired energy production. ACAA2 also participates (minor) in ketone body metabolism and may influence apoptosis and cellular lipid homeostasis. The enzyme is not currently the direct target of pharmacological interventions, but its activity is central to mitochondrial energy homeostasis and fatty acid metabolism.
Mechanism of Action
Not directly targeted, but compounds that manipulate beta-oxidation or alter lipid metabolism may secondarily impact 3-ketoacyl-CoA thiolase function.
Biological Functions
Disease Associations
Safety Considerations
- Genetic deficiency leads to accumulation of medium-chain fatty acids and hypoglycemia
- Targeting this enzyme risks impairing energy production from lipids, with potential for severe metabolic decompensation, especially during fasting or illness
Interacting Drugs
Associated Biomarkers
| Biomarker |
|---|
| Enzyme activity in fibroblasts or blood |
| Acylcarnitine profile abnormalities in plasma/urine (elevated medium-chain compounds) |