Answered: Individuals with phenylketonuria cannot…

Individuals with phenylketonuria cannot convert phenylalanine to tyrosine. Why don’t these individuals exhibit a deficiency of tyrosine?

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter10: From Proteins To Phenotypes

Section10.4: Phenylketonuria: A Mutation That Affects An Enzyme

Problem 1GR

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Concept explainers

Nitrogen metabolism

Nitrogen metabolism is the synthesis, utilization or uptake, breakdown, and excretion of nitrogenous compounds in the body. The nitrogen metabolism encompasses nitrogen fixation, biosynthesis, and the breakdown of amino acids, purines, and pyrimidine. Since nitrogen-containing compounds are required for various life processes, nitrogen is an important element of life.

Question

Individuals with phenylketonuria cannot convert phenylalanine
to tyrosine. Why don’t these individuals exhibit a deficiency of
tyrosine?

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