Record Information |
---|
Version | 5.0 |
---|
Status | Expected but not Quantified |
---|
Creation Date | 2021-02-24 01:47:22 UTC |
---|
Update Date | 2021-09-14 15:29:55 UTC |
---|
HMDB ID | HMDB0240774 |
---|
Secondary Accession Numbers | None |
---|
Metabolite Identification |
---|
Common Name | L-Palmitoylcarnitine |
---|
Description | L-Palmitoylcarnitine or hexadecanoylcarnitine is an acylcarnitine. It is technically a long-chain acyl fatty acid derivative ester of carnitine which facilitates the transfer of long-chain fatty acids from cytoplasm into mitochondria during the oxidation of fatty acids. The general role of acylcarnitines is to transport acyl-groups, organic acids and fatty acids, from the cytoplasm into the mitochondria so that they can be broken down to produce energy. As part of this process, palmitic acid is first transported into the cell via the long-chain fatty acid transport protein 1 (FATP1). Once inside the cell it undergoes a reaction to form an acyl-CoA derivative called palmitoyl-CoA. This reaction is facilitated by the Long-chain fatty-acid CoA ligase 1 protein, which adds a CoA moiety to appropriate acyl groups. Many acyl-CoA groups will then further react with other zwitterionic compounds such as carnitine (to form acylcarnitines) and amino acids (to form acyl amides). The carnitine needed to form acylcarnitines inside the cell is transported into the cell by the organic cation/carnitine transporter 2. In forming an acylcarnitine derivative, palmitoyl-CoA reacts with L-carnitine to form palmitoylcarnitine. This reaction is catalyzed by carnitine O-palmitoyltransferase. This enzyme resides in the mitochondrial outer membrane. While this reaction takes place, the palmitoylcarnitine is moved into the mitochondrial intermembrane space. Following the reaction, the newly synthesized acylcarnitine is transported into the mitochondrial matrix by a mitochondrial carnitine/acylcarnitine carrier protein found in the mitochondrial inner membrane. Once in the matrix, palmitoylcarnitine can react with the carnitine O-palmitoyltransferase 2 enzyme found in the mitochondrial inner membrane to once again form palmitoyl-CoA and L-carnitine. Palmitoyl-CoA then enters into the mitochondrial beta-oxidation pathway to form aceytl-CoA. Acetyl-CoA can go on to enter the TCA cycle, or it can react with L-carnitine to form L-acetylcarnitine in a reaction catalyzed by Carnitine O-acetyltransferase. This reaction can occur in both directions, and L-acetylcarnitine and CoA can react to form acetyl-CoA and L-carnitine in certain circumstances. Finally, acetyl-CoA in the cytosol can be catalyzed by acetyl-CoA carboxylase 1 to form malonyl-CoA, which inhibits the action of carnitine O-palmitoyltransferase 1, thereby preventing palmitoylcarnitine from forming and thereby preventing it from being transported into the mitochondria. L-Palmitoylcarnitine has been also reported to change the activity of certain proteins and to stimulate the activity of caspases 3, 7, and 8. Interestingly, the level of this long-chain acylcarnitine increased during apoptosis. Palmitoylcarnitine was also reported to diminish the binding of phorbol esters (protein kinase C activators) and the autophosphorylation of the enzyme. Some of the physicochemical properties of palmitoylcarnitine may help to explain the need for coenzyme A-carnitine-coenzyme A acyl exchange during mitochondrial fatty acid import. The amphiphilic character of palmitoylcarnitine may also explain its proposed involvement in the pathogenesis of myocardial ischemia. L-Palmitoylcarnitine accumulates in ischemic myocardium and potentially contributes to myocardial damage through alterations in membrane molecular dynamics. This is a mechanism through which could play an important role in ischemic injury (PMID: 2540838 , 15363641 , 8706815 ). Palmitoylcarnitine is characteristically elevated in late-onset carnitine palmitoyltransferase II deficiency (OMIM: 255110 ). |
---|
Structure | [H][C@](CC([O-])=O)(C[N+](C)(C)C)OC(=O)CCCCCCCCCCCCCCC InChI=1S/C23H45NO4/c1-5-6-7-8-9-10-11-12-13-14-15-16-17-18-23(27)28-21(19-22(25)26)20-24(2,3)4/h21H,5-20H2,1-4H3/t21-/m0/s1 |
---|
Synonyms | Not Available |
---|
Chemical Formula | C23H45NO4 |
---|
Average Molecular Weight | 399.616 |
---|
Monoisotopic Molecular Weight | 399.334858933 |
---|
IUPAC Name | Not Available |
---|
Traditional Name | Not Available |
---|
CAS Registry Number | Not Available |
---|
SMILES | [H][C@](CC([O-])=O)(C[N+](C)(C)C)OC(=O)CCCCCCCCCCCCCCC |
---|
InChI Identifier | InChI=1S/C23H45NO4/c1-5-6-7-8-9-10-11-12-13-14-15-16-17-18-23(27)28-21(19-22(25)26)20-24(2,3)4/h21H,5-20H2,1-4H3/t21-/m0/s1 |
---|
InChI Key | XOMRRQXKHMYMOC-NRFANRHFSA-N |
---|
Chemical Taxonomy |
---|
Description | Belongs to the class of organic compounds known as acyl carnitines. These are organic compounds containing a fatty acid with the carboxylic acid attached to carnitine through an ester bond. |
---|
Kingdom | Organic compounds |
---|
Super Class | Lipids and lipid-like molecules |
---|
Class | Fatty Acyls |
---|
Sub Class | Fatty acid esters |
---|
Direct Parent | Acyl carnitines |
---|
Alternative Parents | |
---|
Substituents | - Acyl-carnitine
- Dicarboxylic acid or derivatives
- Tetraalkylammonium salt
- Quaternary ammonium salt
- Carboxylic acid ester
- Carboxylic acid salt
- Carboxylic acid derivative
- Carboxylic acid
- Organic nitrogen compound
- Organooxygen compound
- Organonitrogen compound
- Organic salt
- Hydrocarbon derivative
- Organic oxide
- Organopnictogen compound
- Organic oxygen compound
- Carbonyl group
- Amine
- Aliphatic acyclic compound
|
---|
Molecular Framework | Aliphatic acyclic compounds |
---|
External Descriptors | Not Available |
---|
Ontology |
---|
Physiological effect | |
---|
Disposition | |
---|
Process | |
---|
Role | |
---|
Physical Properties |
---|
State | Not Available |
---|
Experimental Molecular Properties | Property | Value | Reference |
---|
Melting Point | Not Available | Not Available | Boiling Point | Not Available | Not Available | Water Solubility | Not Available | Not Available | LogP | Not Available | Not Available |
|
---|
Experimental Chromatographic Properties | Experimental Collision Cross Sections |
---|
Predicted Molecular Properties | |
---|
Predicted Chromatographic Properties | Predicted Collision Cross SectionsPredicted Kovats Retention IndicesUnderivatized |
---|
General References | - Wasant P, Matsumoto I, Naylor E, Liammongkolkul S: Mitochondrial fatty acid oxidation disorders in Thai infants: a report of 3 cases. J Med Assoc Thai. 2002 Aug;85 Suppl 2:S710-9. [PubMed:12403251 ]
- Nalecz KA, Miecz D, Berezowski V, Cecchelli R: Carnitine: transport and physiological functions in the brain. Mol Aspects Med. 2004 Oct-Dec;25(5-6):551-67. [PubMed:15363641 ]
- Minkler PE, Kerner J, North KN, Hoppel CL: Quantitation of long-chain acylcarnitines by HPLC/fluorescence detection: application to plasma and tissue specimens from patients with carnitine palmitoyltransferase-II deficiency. Clin Chim Acta. 2005 Feb;352(1-2):81-92. [PubMed:15653102 ]
- Fingerhut R, Roschinger W, Muntau AC, Dame T, Kreischer J, Arnecke R, Superti-Furga A, Troxler H, Liebl B, Olgemoller B, Roscher AA: Hepatic carnitine palmitoyltransferase I deficiency: acylcarnitine profiles in blood spots are highly specific. Clin Chem. 2001 Oct;47(10):1763-8. [PubMed:11568084 ]
- Costa CG, Struys EA, Bootsma A, ten Brink HJ, Dorland L, Tavares de Almeida I, Duran M, Jakobs C: Quantitative analysis of plasma acylcarnitines using gas chromatography chemical ionization mass fragmentography. J Lipid Res. 1997 Jan;38(1):173-82. [PubMed:9034211 ]
- Watanabe H, Kobayashi A, Hayashi H, Yamazaki N: Effects of long-chain acyl carnitine on membrane fluidity of human erythrocytes. Biochim Biophys Acta. 1989 Apr 28;980(3):315-8. [PubMed:2540838 ]
- Goni FM, Requero MA, Alonso A: Palmitoylcarnitine, a surface-active metabolite. FEBS Lett. 1996 Jul 15;390(1):1-5. [PubMed:8706815 ]
- Huang HJ, Zhang AY, Cao HC, Lu HF, Wang BH, Xie Q, Xu W, Li LJ: Metabolomic analyses of faeces reveals malabsorption in cirrhotic patients. Dig Liver Dis. 2013 Aug;45(8):677-82. doi: 10.1016/j.dld.2013.01.001. Epub 2013 Feb 4. [PubMed:23384618 ]
- Zordoky BN, Sung MM, Ezekowitz J, Mandal R, Han B, Bjorndahl TC, Bouatra S, Anderson T, Oudit GY, Wishart DS, Dyck JR: Metabolomic fingerprint of heart failure with preserved ejection fraction. PLoS One. 2015 May 26;10(5):e0124844. doi: 10.1371/journal.pone.0124844. eCollection 2015. [PubMed:26010610 ]
- Zhang X, Zhang C, Chen L, Han X, Ji L: Human serum acylcarnitine profiles in different glucose tolerance states. Diabetes Res Clin Pract. 2014 Jun;104(3):376-82. doi: 10.1016/j.diabres.2014.04.013. Epub 2014 Apr 28. [PubMed:24837145 ]
- Sud M, Fahy E, Cotter D, Brown A, Dennis EA, Glass CK, Merrill AH Jr, Murphy RC, Raetz CR, Russell DW, Subramaniam S: LMSD: LIPID MAPS structure database. Nucleic Acids Res. 2007 Jan;35(Database issue):D527-32. doi: 10.1093/nar/gkl838. Epub 2006 Nov 10. [PubMed:17098933 ]
- FRITZ IB: Action of carnitine on long chain fatty acid oxidation by liver. Am J Physiol. 1959 Aug;197:297-304. doi: 10.1152/ajplegacy.1959.197.2.297. [PubMed:13825279 ]
- Reuter SE, Evans AM: Carnitine and acylcarnitines: pharmacokinetic, pharmacological and clinical aspects. Clin Pharmacokinet. 2012 Sep 1;51(9):553-72. doi: 10.1007/BF03261931. [PubMed:22804748 ]
- Bruce CR, Hoy AJ, Turner N, Watt MJ, Allen TL, Carpenter K, Cooney GJ, Febbraio MA, Kraegen EW: Overexpression of carnitine palmitoyltransferase-1 in skeletal muscle is sufficient to enhance fatty acid oxidation and improve high-fat diet-induced insulin resistance. Diabetes. 2009 Mar;58(3):550-8. doi: 10.2337/db08-1078. Epub 2008 Dec 10. [PubMed:19073774 ]
- Schooneman MG, Vaz FM, Houten SM, Soeters MR: Acylcarnitines: reflecting or inflicting insulin resistance? Diabetes. 2013 Jan;62(1):1-8. doi: 10.2337/db12-0466. [PubMed:23258903 ]
- Ahmad T, Kelly JP, McGarrah RW, Hellkamp AS, Fiuzat M, Testani JM, Wang TS, Verma A, Samsky MD, Donahue MP, Ilkayeva OR, Bowles DE, Patel CB, Milano CA, Rogers JG, Felker GM, O'Connor CM, Shah SH, Kraus WE: Prognostic Implications of Long-Chain Acylcarnitines in Heart Failure and Reversibility With Mechanical Circulatory Support. J Am Coll Cardiol. 2016 Jan 26;67(3):291-9. doi: 10.1016/j.jacc.2015.10.079. [PubMed:26796394 ]
- Chen Y, Li C, Liu L, Guo F, Li S, Huang L, Sun C, Feng R: Serum metabonomics of NAFLD plus T2DM based on liquid chromatography-mass spectrometry. Clin Biochem. 2016 Sep;49(13-14):962-6. doi: 10.1016/j.clinbiochem.2016.05.016. Epub 2016 May 20. [PubMed:27211699 ]
- Chen C, Hou G, Zeng C, Ren Y, Chen X, Peng C: Metabolomic profiling reveals amino acid and carnitine alterations as metabolic signatures in psoriasis. Theranostics. 2021 Jan 1;11(2):754-767. doi: 10.7150/thno.51154. eCollection 2021. [PubMed:33391503 ]
- Hunter WG, Kelly JP, McGarrah RW 3rd, Khouri MG, Craig D, Haynes C, Ilkayeva O, Stevens RD, Bain JR, Muehlbauer MJ, Newgard CB, Felker GM, Hernandez AF, Velazquez EJ, Kraus WE, Shah SH: Metabolomic Profiling Identifies Novel Circulating Biomarkers of Mitochondrial Dysfunction Differentially Elevated in Heart Failure With Preserved Versus Reduced Ejection Fraction: Evidence for Shared Metabolic Impairments in Clinical Heart Failure. J Am Heart Assoc. 2016 Jul 29;5(8). pii: JAHA.115.003190. doi: 10.1161/JAHA.115.003190. [PubMed:27473038 ]
- Zhang X, Li Y, Liang Y, Sun P, Wu X, Song J, Sun X, Hong M, Gao P, Deng D: Distinguishing Intracerebral Hemorrhage from Acute Cerebral Infarction through Metabolomics. Rev Invest Clin. 2017 Nov-Dec;69(6):319-328. doi: 10.24875/RIC.17002348. [PubMed:29265114 ]
- Brittain EL, Talati M, Fessel JP, Zhu H, Penner N, Calcutt MW, West JD, Funke M, Lewis GD, Gerszten RE, Hamid R, Pugh ME, Austin ED, Newman JH, Hemnes AR: Fatty Acid Metabolic Defects and Right Ventricular Lipotoxicity in Human Pulmonary Arterial Hypertension. Circulation. 2016 May 17;133(20):1936-44. doi: 10.1161/CIRCULATIONAHA.115.019351. Epub 2016 Mar 22. [PubMed:27006481 ]
- Kalim S, Clish CB, Wenger J, Elmariah S, Yeh RW, Deferio JJ, Pierce K, Deik A, Gerszten RE, Thadhani R, Rhee EP: A plasma long-chain acylcarnitine predicts cardiovascular mortality in incident dialysis patients. J Am Heart Assoc. 2013 Dec 5;2(6):e000542. doi: 10.1161/JAHA.113.000542. [PubMed:24308938 ]
- Ueland T, Svardal A, Oie E, Askevold ET, Nymoen SH, Bjorndal B, Dahl CP, Gullestad L, Berge RK, Aukrust P: Disturbed carnitine regulation in chronic heart failure--increased plasma levels of palmitoyl-carnitine are associated with poor prognosis. Int J Cardiol. 2013 Sep 1;167(5):1892-9. doi: 10.1016/j.ijcard.2012.04.150. Epub 2012 May 22. [PubMed:22622056 ]
- Yoon DW, Kwon HN, Jin X, Kim JK, Lee SK, Park S, Yun CH, Shin C: Untargeted metabolomics analysis of rat hippocampus subjected to sleep fragmentation. Brain Res Bull. 2019 Nov;153:74-83. doi: 10.1016/j.brainresbull.2019.08.008. Epub 2019 Aug 13. [PubMed:31419538 ]
- Qiu G, Zheng Y, Wang H, Sun J, Ma H, Xiao Y, Li Y, Yuan Y, Yang H, Li X, Min X, Zhang C, Xu C, Jiang Y, Zhang X, He M, Yang M, Hu Z, Tang H, Shen H, Hu FB, Pan A, Wu T: Plasma metabolomics identified novel metabolites associated with risk of type 2 diabetes in two prospective cohorts of Chinese adults. Int J Epidemiol. 2016 Oct;45(5):1507-1516. doi: 10.1093/ije/dyw221. Epub 2016 Sep 30. [PubMed:27694567 ]
- Mihalik SJ, Goodpaster BH, Kelley DE, Chace DH, Vockley J, Toledo FG, DeLany JP: Increased levels of plasma acylcarnitines in obesity and type 2 diabetes and identification of a marker of glucolipotoxicity. Obesity (Silver Spring). 2010 Sep;18(9):1695-700. doi: 10.1038/oby.2009.510. Epub 2010 Jan 28. [PubMed:20111019 ]
|
---|