Mitochondrial fatty acid β-oxidation enzyme

Mitochondrial fatty acid β-oxidation enzymes constitute a group of mitochondrial matrix enzymes responsible for the stepwise catabolism of fatty acids to acetyl-CoA through repeated cycles of dehydrogenation, hydration, another dehydrogenation, and thiolytic cleavage. The main core enzymes are (1) acyl-CoA dehydrogenases (with isoforms for different chain lengths: VLCAD, LCAD, MCAD, SCAD), (2) enoyl-CoA hydratase, (3) 3-hydroxyacyl-CoA dehydrogenase, and (4) 3-ketoacyl-CoA thiolase. For long-chain fatty acids, three activities are present on the mitochondrial trifunctional protein (TFP), a multi-enzyme complex anchored to the inner mitochondrial membrane[1][2][4]. Mutations or deficiencies in these enzymes result in fatty acid oxidation disorders, which manifest clinically through hypoglycemia, cardiomyopathy, liver dysfunction, and sudden unexpected death, especially in infants[3][4]. Diagnosis and disease monitoring frequently rely on acylcarnitine profiling and enzymatic assays. This enzyme system does not refer to a single canonical drug target but rather a class of targets, and therapeutic interventions focus on dietary management and, in some cases, experimental pharmacological activation[3]. **Note:** There is something incorrect with the target as stated: "Mitochondrial fatty acid β-oxidation enzymes" refers to a system, not a single molecule. Each enzyme in the pathway (e.g., "Medium-chain acyl-CoA dehydrogenase," "Carnitine palmitoyltransferase 2," "Mitochondrial trifunctional protein") is a distinct and specific drug/metabolic target. The current query groups multiple canonical targets together[3][4].

Other names

Fatty acid β-oxidation enzymeMitochondrial β-oxidation enzymeFatty acid oxidation enzymeAcyl-CoA dehydrogenase (subclasses: VLCAD, LCAD, MCAD, SCAD)Mitochondrial trifunctional protein (TFP)Carnitine palmitoyltransferase (CPT)3-hydroxyacyl-CoA dehydrogenaseEnoyl-CoA hydrataseKetoacyl-CoA thiolase

Enzyme activation (cofactor supplementation); Induction of β-oxidation pathway gene expression; Modulation of fatty acid flux through mitochondrial pathways