Medical MCQ-PKU is a congenital amino acid metabolic disorder. In the following rare variants of PKU, dihydrobiopterin synthesis is affected. The enzyme deficient is

PKU is a congenital amino acid metabolic disorder. In the following rare variants of PKU, dihydrobiopterin synthesis is affected. The enzyme deficient is

Histidine decarboxylase

Phenylalanine hydroxylase

Dihydropterin reductase

Tyrosine deficiency

Question Category:

Biochemistry

Correct Answer:

Dihydropterin reductase

Description:

In Type 2 and 3 of PKU, there is deficiency of enzyme dihydrobiopterin reductase. Hence there is deficiency of dihydrobiopterin.Ref: DM Vasudevan - Textbook of Biochemistry, 7th edition, page no: 236

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