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aminotransferase

[uh-mee-noh-trans-fuh-reys, -reyz, am-uh-noh-] /əˌmi noʊˈtræns fəˌreɪs, -ˌreɪz, ˌæm ə noʊ-/
noun, Biochemistry
Origin
1960-1965
1960-65; amino- + transferase
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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aminotransferase in Medicine

aminotransferase a·mi·no·trans·fer·ase (ə-mē'nō-trāns'fə-rās', -rāz', ām'ə-nō-)
n.
Any of various enzymes that catalyze the transfer of an amino group between an alpha-amino acid and usually a specific carbon on a keto acid. Also called aminopherase, transaminase.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Article for aminotransferase

any of a group of enzymes that catalyze the transfer of the amino group (NH2) of an amino acid to a carbonyl compound, commonly an a-keto acid (an acid with the general formula RCOCOOH). The liver, for example, contains specific transaminases for the transfer of an amino group from glutamic acid to a-keto acids that correspond to most of the other amino acids. Other transaminases catalyze reactions in which an amino group is transferred from glutamic acid to other compounds-e.g., to aldehydes to form amines. Transamination is one of the principal mechanisms for the formation of necessary amino acids in the metabolism of proteins. Vitamin B6 is commonly involved in the action of the transaminases.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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