In enzymology, a pyridoxamine-oxaloacetate transaminase () is an enzyme that catalyzes the chemical reaction pyridoxamine + oxaloacetate pyridoxal + L-aspartate Thus, the two substrates of this enzyme are pyridoxamine and oxaloacetate, whereas its two products are pyridoxal and L-aspartate. This enzyme belongs to the family of transferases, specifically the transaminases, which transfer nitrogenous groups. The systematic name of this enzyme class is pyridoxamine:oxaloacetate aminotransferase. This enzyme participates in vitamin B6 metabolism. References Further reading EC 2.6.1 Enzymes of unknown structure