In enzymology, an aminolevulinate transaminase () is an enzyme that catalyzes the chemical reaction 5-aminolevulinate + pyruvate 4,5-dioxopentanoate + L-alanine Thus, the two substrates of this enzyme are 5-aminolevulinate and pyruvate, whereas its two products are 4,5-dioxopentanoate and L-alanine. This enzyme belongs to the family of transferases, specifically the transaminases, which transfer nitrogenous groups. The systematic name of this enzyme class is 5-aminolevulinate:pyruvate aminotransferase. Other names in common use include . This enzyme participates in porphyrin and chlorophyll metabolism. It employs one cofactor, pyridoxal phosphate. References EC 2.6.1 Pyridoxal phosphate enzymes Enzymes of unknown structure