coenzyme A

coenzyme A
coenzyme A co*en"zyme A` (k[-o]*[e^]n"z[imac]m [=a]`), (Biochem.) a coenzyme ({C21H36N7O16P3S}) that participates in the transfer of acetyl groups in biochemical reactions; -- abbreviated {CoA}. It contains adenosine, phosphate, pantothenic acid and cysteamine groups. The acetyl group to be transferred during biosynthesis is temporarily attached to the free sulhydryl of the cysteamine group to form a thioester, in which state it is called acetyl coenzyme A. The strength of a preparation of coenzyme A may be expressed by the Lippman unit; one milligram of CoA contains 413 Lippman units. [PJC]

The Collaborative International Dictionary of English. 2000.

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  • Coenzyme A — Identifiers CAS number …   Wikipedia

  • coenzyme A — A coenzyme containing pantothenic acid, adenosine 3′ phosphate 5′ pyrophosphate, and cysteamine; involved in the transfer of acyl groups, notably in transacetylations. * * * coenzyme A n a coenzyme C21H36N7O16P3S that occurs in all living cells… …   Medical dictionary

  • coenzyme A — coenzyme A. См. кофермент А. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Coenzyme A — « CoA » redirige ici. Pour les autres significations, voir COA. Coenzyme A …   Wikipédia en Français

  • coenzyme A — noun Date: 1947 a coenzyme C21H36N7O16P3S that occurs in all living cells and is essential to the metabolism of carbohydrates, fats, and some amino acids compare acetyl coenzyme A …   New Collegiate Dictionary

  • coenzyme A — a nucleotide containing pantothenic acid, which is an important coenzyme in the Krebs cycle and in the metabolism of fatty acids …   The new mediacal dictionary

  • coenzyme A — A derivative of adenosine triphosphate and pantothenic acid that can carry acyl groups (usually acetyl) as thioesters. Involved in many metabolic pathways, eg. citric acid cycle and in fatty acid oxidation …   Dictionary of molecular biology

  • coenzyme A — noun a coenzyme present in all living cells; essential to metabolism of carbohydrates and fats and some amino acids • Hypernyms: ↑coenzyme …   Useful english dictionary

  • coenzyme A — Biochem. a coenzyme, composed of a phosphorylated derivative of pantothenic acid linked to adenylic acid, that participates in the transfer of acyl groups in fatty acid metabolism and amino acid metabolism. Abbr.: CoA [1935 40] * * * …   Universalium

  • coenzyme A — /koʊɛnzaɪm ˈeɪ/ (say kohenzuym ay) noun a coenzyme containing a thiol group which activates carboxylic acids …   Australian English dictionary

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