ID 2.6.1.58 DE phenylalanine(histidine) transaminase. AN phenylalanine(histidine) aminotransferase. CA L-phenylalanine + pyruvate = 3-phenylpyruvate + L-alanine. CC -!- L-Histidine and L-tyrosine can act instead of L-phenylalanine; in the CC reverse reaction, L-methionine, L-serine and L-glutamine can replace CC L-alanine. //