transamination

The reaction between an amino acid and an α-keto acid through which the amino group is transferred from the former to the latter; in certain cases the reaction may be between an amino acid and an aldehyde ( e.g., glutamate with glutamate semialdehyde via ornithine transaminase).

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trans·am·i·na·tion .tran(t)s-.am-ə-'nā-shən, .tranz- n a reversible oxidation-reduction reaction in which an amino group is transferred typically from an alpha-amino acid to the carbonyl carbon atom of an alpha-keto acid

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n.
a process involved in the metabolism of amino acids in which amino groups (-NH2) are transferred from amino acids to certain a-keto acids, with the production of a second keto acid and amino acid. The reaction is catalysed by enzymes (see transaminase), which require pyridoxal phosphate as a coenzyme.

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trans·am·i·na·tion (trans″am-ĭ-naґshən) the reversible transfer of an amino group from an amino acid to what was originally an α-keto acid, forming a new keto acid and a new amino acid, without the appearance of ammonia in the free state.

Medical dictionary. 2011.

Look at other dictionaries:

  • transamination — ● transamination nom féminin Transfert d un groupement aminé d un acide aminé sur un acide cétonique pour former un nouvel acide aminé et un nouvel acide cétonique …   Encyclopédie Universelle

  • transamination — [transam΄ə nā′shən, tranzam΄ə nā′shən] n. [ TRANS + AMIN(E) + ATION] the transfer of an amino group from one molecule to another, usually by the action of a transaminase …   English World dictionary

  • Transamination — There are two chemical reactions known as transamination (or aminotransfer). The first is the reaction between an amino acid and an alpha keto acid. The amino group is transferred from the former to the latter; this results in the amino acid… …   Wikipedia

  • Transamination — Exemple de réaction de transamination La réaction de transamination est catalysée par une enzyme transaminase, cette réaction réversible consiste en l échange d une fonction amine primaire entre un acide α aminé et un α cétoacide. Par… …   Wikipédia en Français

  • transamination — peramininimas statusas T sritis chemija apibrėžtis Fermentų katalizuojamas aminogrupės perkėlimas iš aminorūgšties į oksorūgštį. atitikmenys: angl. transamination rus. пераминирование; трансаминирование …   Chemijos terminų aiškinamasis žodynas

  • transamination — noun Etymology: International Scientific Vocabulary trans + amine + ation Date: 1939 a reversible oxidation reduction reaction in which an amino group is transferred typically from an alpha amino acid to the carbonyl carbon atom of an alpha keto… …   New Collegiate Dictionary

  • transamination — (trans am i na shun) The removal of amino acid s amino group by transferring it to an a keto acid acceptor …   Dictionary of microbiology

  • transamination — /trans am euh nay sheuhn, tranz /, n. Biochem., Chem. the transfer of an amino group from one compound to another. [1940 45; TRANS + AMIN(O) + ATION] * * * …   Universalium

  • transamination — noun the transfer of an amino group from an amino acid to another molecule See Also: transaminase …   Wiktionary

  • transamination — n. transfer of an amino group from one compound to another (Chemistry) …   English contemporary dictionary

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