carnitine

/kahr"ni teen'/, n. Biochem.
a dipolar compound that occurs in muscle and liver and is involved in the transport of fatty acids across the inner mitochondrial membrane.
[1920-25; < G Carnitin, equiv. to L carni- (comb. form of caro, gen. carnis meat, flesh) + -tin appar. arbitrarily chosen suffix (cf. -IN2, -INE2); so called because it was first isolated in meat extract]

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enzyme
      a water-soluble, vitamin-like compound related to the amino acids. It is an essential growth factor for mealworms and is present in striated (striped) muscle and liver tissue of higher animals. Carnitine, which can be synthesized by the higher animals, is associated with the transfer of fatty substances from the bloodstream to active sites of fatty-acid oxidation within muscle cells. It regulates the rate of oxidation of fatty acids and may afford the means by which a cell can rapidly shift its metabolic patterns (e.g., from fat synthesis to fat breakdown).

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Universalium. 2010.

Look at other dictionaries:

  • Carnitine — Systematic (IUPAC) name 3 hydroxy 4 (trimethylazaniumyl)butanoate Clinical data AHFS/Drugs.com …   Wikipedia

  • Carnitine — Structure de la carnitine Général Nom IUPAC 3 hydroxy 4 triméthylammonio butanoate …   Wikipédia en Français

  • carnitine — ● carnitine nom féminin Acide aminé dont le déficit peut provoquer une myopathie (maladie grave des muscles). carnitine [kaʀnitin] n. f. ÉTYM. Mil. XXe; du lat. caro, carnis « chair », t de liaison, et suff. ine. ❖ ♦ Chim., biol. Substance… …   Encyclopédie Universelle

  • carnitine — (= b hydroxy b trimethyl aminobutyric acid) Compound that transports long chain fatty acids across the inner mitochondrial membrane in the form of acyl carnitine. Sometimes referred to as Vitamin Bt or Vitamin B7 …   Dictionary of molecular biology

  • carnitine — A trimethylammonium (betaine) derivative of γ amino β hydroxybutyric acid, formed from Nε,Nε,Nε trimethyllysine and from γ butyrobetaine; the l isomer is a thyroid inhibitor found in muscle, liver, and meat extracts; l c. is an acyl carrier with… …   Medical dictionary

  • carnitine — karnitinas statusas T sritis chemija formulė Formulę žr. priede. priedas( ai) Grafinis formatas atitikmenys: angl. carnitine; vitamin B rus. витамин B; карнитин ryšiai: sinonimas – (R) 3 hidroksi 4 trimetilamoniobutanoatas sinonimas – vitaminas …   Chemijos terminų aiškinamasis žodynas

  • carnitine — A substance made in the muscles and liver, and also found in certain foods such as meat, poultry, fish, and some dairy products. The body needs carnitine to make energy from fat …   English dictionary of cancer terms

  • carnitine — noun Etymology: International Scientific Vocabulary, from Latin carn , caro Date: circa 1922 a quaternary ammonium compound C7H15NO3 that is present especially in vertebrate muscle and that in the levorotatory form is involved in the transfer of… …   New Collegiate Dictionary

  • carnitine — noun A betaine 3 hydroxy 4 trimethylammonio butanoate that occurs in the liver and has a function in fatty acid transport …   Wiktionary

  • carnitine — car·ni·tine …   English syllables

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