transaminase

transaminase
/trans am"euh nays', -nayz', tranz-/, n. Biochem.
any of a class of enzymes, occurring in most plant and animal tissue, that cause transamination.
[1940-45; TRANSAMIN(ATION) + -ASE]

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enzyme
also called  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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Universalium. 2010.

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Look at other dictionaries:

  • transaminase — [ trɑ̃zaminaz ] n. f. • 1964; de trans , amine et ase ♦ Biochim. Enzyme qui transporte le groupement moléculaire NH2 d un corps à un autre. Élévation du taux de transaminases dans le sang lors d une hépatite. ● transaminase nom féminin Enzyme qui …   Encyclopédie Universelle

  • transaminase — |z| s. f. [Bioquímica] Enzima cuja função é transportar os radicais aminados (NH2) de um ácido aminado para outro ácido aminado …   Dicionário da Língua Portuguesa

  • transaminase — [transam′ə nās΄, tranzam′ə nās΄, tranz am′ənāz΄] n. [< TRANSAMINATION + ASE] any of a group of enzymes that cause transamination …   English World dictionary

  • Transaminase — In biochemistry, a transaminase or an aminotransferase is an enzyme that catalyzes a type of reaction between an amino acid and an α keto acid. Specifically, this reaction (transamination) involves removing the amino group from the amino acid,… …   Wikipedia

  • Transaminase — Dieser Artikel oder Abschnitt ist nicht hinreichend mit Belegen (Literatur, Webseiten oder Einzelnachweisen) versehen. Die fraglichen Angaben werden daher möglicherweise demnächst gelöscht. Hilf Wikipedia, indem du die Angaben recherchierst und… …   Deutsch Wikipedia

  • Transaminase — Une transaminase ou aminotransférase est une enzyme qui catalyse un type de réaction entre un acide aminé et un acide α cétonique. Sommaire 1 Biochimie 2 Intérêt médical 2.1 Au niveau hépatique …   Wikipédia en Français

  • transaminase — noun a class of transferases that catalyze transamination (that transfer an amino group from an amino acid to another compound) • Syn: ↑aminotransferase, ↑aminopherase • Hypernyms: ↑transferase • Hyponyms: ↑glutamic oxalacetic transaminase, ↑ …   Useful english dictionary

  • transaminase — aminotransferazė statusas T sritis chemija apibrėžtis Fermentas, katalizuojantis peramininimo reakcijas. atitikmenys: angl. aminotransferase; transaminase rus. аминотрансфераза; трансаминаза ryšiai: sinonimas – transaminazė …   Chemijos terminų aiškinamasis žodynas

  • Transaminase clinical usage — Two of the better known enzymes in the transaminase class are serum glutamic oxaloacetic transaminase (SGOT) and serum glutamic pyruvic transaminase (SGPT). Both SGOT and SGPT are normally found primarily in liver and heart cells, are released… …   Medical dictionary

  • Transaminase nomenclature — The names and abbreviations applied to the transaminases are quite confusing since (just as a starter) a transaminase is an aminotransferase, SGOT is known alternatively as aspartate aminotransferase (AST), and SGPT also goes as alanine… …   Medical dictionary

  • Transaminase biochemistry — The transaminases are enzymes that catalyze chemical reactions in the body in which an amino group is transferred from a donor molecule to a recipient molecule. Hence, the name “transferase” can be applied to the transaminases because these… …   Medical dictionary

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