Transaminase involved in tyrosine breakdown. Converts tyrosine to 3-(4-hydroxyphenyl)pyruvate. Can catalyze the reverse reaction, using L-glutamate in vitro. Can convert phenylalanine to phenylpyruvate and catalyze the reverse reaction in vitro. 2-oxoglutarate + L-tyrosine = 3-(4-hydroxyphenyl)pyruvate + L-glutamate Amino-acid degradation; L-phenylalanine degradation; acetoacetate and fumarate from L-phenylalanine: step 2/6. Belongs to the class-I pyridoxal-phosphate-dependent aminotransferase family. Truncated N-terminus.