n. a process involved in the metabolism of amino acids in which amino groups (–NH2) are transferred from amino acids to certain ?-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.
n. an enzyme that catalyses the transfer of an amino group from an amino acid to an ?-keto acid in the process of *transamination. Examples include *aspartate aminotransferase (AST), which catalyses the transamination of glutamate and oxaloacetate to ?-ketoglutarate and aspartate, and *alanine aminotransferase (ALT), converting glutamate and pyruvate to ?-ketoglutarate and alanine.... transaminase
B6 (pyridoxine) a vitamin of the B complex from which the coenzyme *pyridoxal phosphate, involved in the transamination of amino acids, is formed. The vitamin is found in most foods and a deficiency is therefore rare. The adult RNI (see Dietary Reference Values) is 15 ?g/g dietary protein.... vitamin
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