Alanine-oxo-acid transaminase () is an enzyme characterised in Brucella abortus and some plants that catalyzes a general chemical reaction that converts L-alanine and an α-keto acid into pyruvic acid and an L-amino acid:
L-alanine + a 2-oxo acid pyruvic acid + an L-amino acid
For example, reaction with α-ketoglutaric acid gives L-aspartic acid:
This enzyme is a transferase, specifically a transaminase, which transfer nitrogenous groups. The systematic name of this enzyme class is L-alanine:2-oxo-acid aminotransferase. Other names in common use include L-alanine-alpha-keto acid aminotransferase, leucine-alanine transaminase, alanine-keto acid aminotransferase, and alanine-oxo acid aminotransferase. It uses pyridoxal phosphate as a cofactor.
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