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Tyrosine, PKU is a inherited disorder that is characterized by failure to metabolize the amino acid phenylalanine to tyrosine.

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13y ago
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14y ago

Tyrosine becomes conditionally essential. This is because the body lacks the enzyme to convert phenylalanine to tyrosine, thereby making it "essential."

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Q: In phenylketonuria what amino acid becomes conditionally essential?
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Which amino acids are conditionally essential and why?

The conditionally essential amino acids in humans are the amino acids arginine, cysteine, glycine, glutamine, histidine, proline, serine and tyrosine. They are considered conditionally essential, which means they are not normally required in the diet, but must be supplied as a supplement to specific populations that do not synthesize it in adequate amounts. An example would be with the disease phenylketonuria (PKU). Individuals living with PKU must keep their intake of phenylalanine extremely low to prevent mental retardation and other metabolic complications. However, they cannot synthesize tyrosine from phenylalanine, so tyrosine becomes essential in the diet of PKU patients.


What are the amino acids which can't accumulate?

Phenylketonuria


If human genetic defect that results in the failure to metabolize the amino acid phenylalanine is?

Phenylketonuria (PKU) is the human genetic defect that results in the failure to metabolize the amino acid phenylalanine.


A person who has what is unable to break down the amino acid phenylalanine?

PKU(phenylketonuria)


Why do animals require protein?

Strictly, we don't. Rather, we require amino acids, which are the components that proteins are built from. Particularly, we need essential amino acids, of which there are different numbers for different animals. For humans, there are eight truly essential amino acids, two more which are truly essential only in infancy, and eight conditionally essential amino acids. Aside from these dietary requirements, animals can survive without any other protein intake. However, protein is a very convenient source of food-energy.


The disease phenylketonuria is related chiefly to abnormal metabolism of?

a certain amino acid


What is the condition known as phenylketonuria?

Phenylketonuria (PKU) is an inborn error in metabolism that prevents the body from using phenylalanine, an amino acid necessary for normal growth and development.


What are amino acids that cannot be made by metabolism called?

Amino acids that cannot be made by metabolism are called essential amino acids. These amino acids must be obtained through diet.


Where in body is amino acid pool?

both essential and non essential amino acids .


Does aspartame help people with the genetic disease phenylketonuria?

Aspartame is a sweetener that is made up of two amino acids, one of them is call phenylalanine. The digestive system of those who have the genetic disease, phenylketonuria cannot digest this amino acid. It wreaks havoc in their bodies; so it does not help but hurt. This is why there is a warning label on products with aspartame warning those with phenylketonuria that there is phenylalanine in the product.


Amino acids that must come from your diet are called?

Essential amino acids.LeucineIsoleucineValineLysineMethioninePhenylalanineThreonineTryptophanHistidine


Where are essential amino acids converted to non essential amino acids?

In the liver