Phenylalanine and tyrosine are used by the body to make the hormones adrenaline and thyroxine.
They are also involved in the formation of melanin, a pigment present in the skin, hair and part of the eye.
Phenylalanine and tyrosine share a common path way of degradation, which occurs in liver, and ultimately yields fumarate and (acetyl CoA). The pathway starts with oxidation of phenylalanine to tyrosine. Tyrosine is an essential amino acid, but tyrosine is not.
About two thirds of the phenylalanine consumed is converted to tyrosine by this reaction, the rest is incorporated into protein.
A mutation that prevents the conversion of phenylalanine to tyrosine results in a genetic disorder called phenylketonuria.
The adult minimum requirement for phenylalanine and tyrosine is 14 mg/kg body weight and an absolute minimum is 1.10 g.
Amino acids of phenylalanine and tyrosine
The Most Popular Post
-
The recommended daily allowance (RDA) for sodium is a critical dietary guideline aimed at promoting overall health and preventing chronic di... -
Potassium is the largest intracellular cation in the body. Ninety-eight percent is stored intracellularly. Hypokalemia, low blood potassium,...
-
In Europe, the sausages were known as Frankfurter wurst and Vienna wurst, but the wurst part - which means sausage - was dropped soon after ...
-
Food contamination by various agents can result in over 250 distinct foodborne diseases, posing a significant public health and economic cha... -
Diabetes mellitus is a prevalent disease in the Western world, affecting an estimated 4 to 5% of the population. In the European Union, arou...