| en | en | |
| CoA | 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] |
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