Essential Biochemistry - Protein Metabolism (Section 11 - No. 23)
What is the cause of phenylketonuria (PKU)?
Deficiency of tyrosinase
Deficiency of phenylalanine hydroxylase
Excess production of melanin
Deficiency of tryptophan hydroxylase
Explanation
PKU is caused by a deficiency of phenylalanine hydroxylase, which leads to the accumulation of phenylalanine.
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