2-oxoglutarate + an aromatic L-alpha-amino acid = an aromatic oxo-acid + L-glutamate Amino-acid biosynthesis; L-phenylalanine biosynthesis; L-phenylalanine from phenylpyruvate (ArAT route): step 1/1. Amino-acid biosynthesis; L-tyrosine biosynthesis; L-tyrosine from (4-hydroxyphenyl)pyruvate: step 1/1. Homodimer. Belongs to the class-I pyridoxal-phosphate-dependent aminotransferase family.