Carnitineis aquaternary ammonium compoundinvolved inmetabolismin most mammals, plants, and some bacteria.In support of energy metabolism, carnitine transportslong-chain fatty acidsfrom the cytosol intomitochondriato beoxidizedfor free energy production, and also participates in removing products of metabolism from cells.Given its key metabolic roles, carnitine is concentrated in tissues likeskeletalandcardiac musclethat metabolize fatty acids as an energy source.Generally individuals, including strictvegetarians, synthesize enough L-carnitinein vivo.
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