transaminasemedical dictionary

<enzyme>

<cell biology> A subclass of enzymes that catalyse the transfer of an amino group from a donor (generally an amino acid) to an acceptor (generally 2 keto acid) in a cyclic process using pyridoxal phosphate as cofactor, for example aspartate amino transferase catalyses the reaction: aspartate + ketoglutarate = oxaloacetate + glutamate.

(11 Mar 2008)