Phenylketonuria is caused by deficiency of
Deficiency of Phenylalanine hydroxylase is the cause of PKU. The genetic mutation may be in such a way that either the enzyme is not synthesized or a non-functional enzyme is synthesized.Ref: DM Vasudevan - Textbook of Biochemistry, 7th edition, page no: 236
Tyrosine transminase
Tyrosine hydroxylase
Phenylalanine transaminase
Phenylalanine hydroxylase
Metabolism of protein and amino acid