Catalyzes the reversible conversion of aspartate and 2-oxoglutarate to glutamate and oxaloacetate (By similarity). Genetic evidence shows that this protein is involved in L-lysine catabolism. It may have 2-aminoadipate:2-oxoglutarate aminotransferase activity (PubMed:29769716). 2-oxoglutarate + L-aspartate = L-glutamate + oxaloacetate 2-oxoglutarate + L-2-aminoadipate = 2-oxoadipate + L-glutamate Homodimer. Belongs to the class-I pyridoxal-phosphate-dependent aminotransferase family.