Catalyzes the Glu:glyoxylate aminotransferase (GGT), Ala:glyoxylate aminotransferase (AGT), Ala:2-oxoglutarate aminotransferase (AKT) and Glu:pyruvate aminotransferase (GPT) reactions in peroxisomes. 2-oxoglutarate + L-alanine = L-glutamate + pyruvate glyoxylate + L-alanine = glycine + pyruvate 2-oxoglutarate + glycine = glyoxylate + L-glutamate Photosynthesis; C4 acid pathway. Amino-acid degradation; L-alanine degradation via transaminase pathway; pyruvate from L-alanine: step 1/1. Homodimer. Expressed at low levels in seedlings, leaves, flowers, roots, and green siliques. The N-terminus is blocked. Belongs to the class-I pyridoxal-phosphate-dependent aminotransferase family. Alanine aminotransferase subfamily.