IUBMB Enzyme Nomenclature


Accepted name: carnitine O-palmitoyltransferase

Reaction: palmitoyl-CoA + L-carnitine = CoA + L-palmitoylcarnitine

Other name(s): CPT (ambiguous); CPTo; outer malonyl-CoA inhibitable carnitine palmitoyltransferase; CPTi; CPT I (outer membrane carnitine palmitoyl transferase); carnitine palmitoyltransferase I; carnitine palmitoyltransferase II; CPT-A; CPT-B; acylcarnitine transferase; carnitine palmitoyltransferase; carnitine palmitoyltransferase-A; L-carnitine palmitoyltransferase; palmitoylcarnitine transferase

Systematic name: palmitoyl-CoA:L-carnitine O-palmitoyltransferase

Comments: Broad specificity to acyl group, over the range C8 to C18; optimal activity with palmitoyl-CoA. cf. EC carnitine O-acetyltransferase and EC carnitine O-octanoyltransferase.

Links to other databases: BRENDA, EXPASY, GTD, KEGG, Metacyc, PDB, CAS registry number: 9068-41-1


1. Derrick, J.P., Tubbs, P.K. and Ramsay, R.R. Purification and properties of an easily solubilized L-carnitine palmitoyltransferase from beef-liver mitochondria. Biochem. Soc. Trans. 14 (1986) 698.

2. Healy, M.J., Kerner, J. and Bieber, L.L. Enzymes of carnitine acylation. Is overt carnitine palmitoyltransferase of liver peroxisomal carnitine octanoyltransferase? Biochem. J. 249 (1988) 231-237. [PMID: 3342008]

3. Miyazawa, S., Ozasa, H., Osumi, T. and Hashimoto, T. Purification and properties of carnitine octanoyltransferase and carnitine palmitoyltransferase from rat liver. J. Biochem. (Tokyo) 94 (1983) 529-542. [PMID: 6630173]

[EC created 1972]

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