carnitine O-octanoyltransferase activity
Definition
Target type: molecularfunction
Catalysis of the reaction: (R)-carnitine + octanoyl-CoA = (S)-octanoylcarnitine + CoA. [EC:2.3.1.137, RHEA:17177]
Carnitine O-octanoyltransferase activity is an enzymatic process that catalyzes the transfer of an octanoyl group from a donor molecule, such as acyl-CoA, to carnitine. This reaction results in the formation of octanoylcarnitine, which is a crucial intermediate in the transport of long-chain fatty acids across the mitochondrial membrane. Specifically, octanoylcarnitine is transported into the mitochondrial matrix via the carnitine shuttle system, where it undergoes further oxidation in the beta-oxidation pathway. The carnitine O-octanoyltransferase enzyme plays a critical role in the metabolism of fatty acids, particularly those with eight carbon atoms. It ensures the efficient transfer of octanoyl groups from the cytosol into the mitochondria, facilitating the production of energy through the breakdown of fatty acids. This enzyme activity is also essential for the regulation of fatty acid metabolism, contributing to the maintenance of energy homeostasis and lipid balance within the cell.'
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Proteins (2)
| Protein | Definition | Taxonomy |
|---|---|---|
| Carnitine O-acetyltransferase | A carnitine O-acetyltransferase that is encoded in the genome of human. [PRO:DNx, UniProtKB:P43155] | Homo sapiens (human) |
| Carnitine O-palmitoyltransferase 2, mitochondrial | A carnitine O-palmitoyltransferase 2, mitochondrial that is encoded in the genome of human. [PRO:DNx, UniProtKB:P23786] | Homo sapiens (human) |
Compounds (10)
| Compound | Definition | Classes | Roles |
|---|---|---|---|
| 4-hydroxyphenylglyoxylic acid | 4-hydroxyphenylglyoxylate : Conjugate base of 4-hydroxyphenylglyoxylic acid. 4-hydroxyphenylglyoxylic acid: RN given refers to parent cpd | phenols | |
| amiodarone | amiodarone : A member of the class of 1-benzofurans that is 1-benzofuran substituted by a butyl group at position 2 and a 4-[2-(diethylamino)ethoxy]-3,5-diiodobenzoyl group at position 3. It is a cardiovascular drug used for the treatment of cardiac dysrhythmias. Amiodarone: An antianginal and class III antiarrhythmic drug. It increases the duration of ventricular and atrial muscle action by inhibiting POTASSIUM CHANNELS and VOLTAGE-GATED SODIUM CHANNELS. There is a resulting decrease in heart rate and in vascular resistance. | 1-benzofurans; aromatic ketone; organoiodine compound; tertiary amino compound | cardiovascular drug |
| perhexiline | Perhexiline: 2-(2,2-Dicyclohexylethyl)piperidine. Coronary vasodilator used especially for angina of effort. It may cause neuropathy and hepatitis. | piperidines | cardiovascular drug |
| pioglitazone | pioglitazone : A member of the class of thiazolidenediones that is 1,3-thiazolidine-2,4-dione substituted by a benzyl group at position 5 which in turn is substituted by a 2-(5-ethylpyridin-2-yl)ethoxy group at position 4 of the phenyl ring. It exhibits hypoglycemic activity. Pioglitazone: A thiazolidinedione and PPAR GAMMA agonist that is used in the treatment of TYPE 2 DIABETES MELLITUS. | aromatic ether; pyridines; thiazolidinediones | antidepressant; cardioprotective agent; EC 2.7.1.33 (pantothenate kinase) inhibitor; EC 6.2.1.3 (long-chain-fatty-acid--CoA ligase) inhibitor; ferroptosis inhibitor; geroprotector; hypoglycemic agent; insulin-sensitizing drug; PPARgamma agonist; xenobiotic |
| levocarnitine | (R)-carnitine : The (R)-enantiomer of carnitine. | carnitine | antilipemic drug; nootropic agent; nutraceutical; Saccharomyces cerevisiae metabolite; water-soluble vitamin (role) |
| trimetazidine | Trimetazidine: A vasodilator used in angina of effort or ischemic heart disease. | aromatic amine | |
| 4-hydroxyphenylglycine, (s)-isomer | L-4-hydroxyphenylglycine : The L-enantiomer of 4-hydroxyphenylglycine. | 4-hydroxyphenylglycine | |
| rosiglitazone | aminopyridine; thiazolidinediones | EC 6.2.1.3 (long-chain-fatty-acid--CoA ligase) inhibitor; ferroptosis inhibitor; insulin-sensitizing drug | |
| emeriamine | emeriamine: derived from fungal metabolite emericedin; structure given in first source | ||
| 4-trimethylammonio-3-((tetradecylcarbamoyl)amino)butyrate |