Previously, it was designated EC 4.3.1.5, but that class has been redesignated as EC 4.3.1.24 (phenylalanine ammonia-lyases), EC 4.3.1.25 (tyrosine ammonia-lyases), and EC 4.3.1.26 (phenylalanine/tyrosine ammonia-lyases).
以前はEC 4.3.1.5と分類とされていたが、このクラスはEC 4.3.1.24 (phenylalanine ammonia-lyases)、EC 4.3.1.25 (tyrosine ammonia-lyases)、EC 4.3.1.26 (phenylalanine/tyrosine ammonia-lyases) に再指定された。