Carnitine palmitoyltransferase 1 facilitates fatty acid oxidation in a non cell autonomous manner: Cell Reports Fatty Acid Transport an overview ScienceDirect Topics L carnitine is primarily synthesized in the liver from the amino acids lysine and methionine through a series of four enzymatic reactions, with the liver and kidneys converting the precursor butyrobetaine into active Frontiers Fatty acid oxidation in immune function Carnitines as Mitochondrial Modulators of Oocyte and Embryo Bioenergetics