4-Hydroxyphenylpyruvate
4-Hydroxyphenylpyruvate is an intermediate in the metabolism of the amino acid phenylalanine. It is converted into homogentisate by the enzyme 4-hydroxyphenylpyruvate dioxygenase.
Structure and properties[edit | edit source]
4-Hydroxyphenylpyruvate is a ketone and a hydroxy acid. It is derived from a phenylalanine. It is a conjugate acid of a 4-hydroxyphenylpyruvate(1-).
Role in metabolism[edit | edit source]
In humans, 4-Hydroxyphenylpyruvate is a key intermediate in the catabolic pathway of phenylalanine and tyrosine, two of the twenty standard amino acids used to synthesize proteins. This metabolic pathway is responsible for the degradation of these amino acids into fumarate and acetoacetate, which can be used to produce energy in the form of adenosine triphosphate (ATP).
Clinical significance[edit | edit source]
Deficiency in the enzyme 4-hydroxyphenylpyruvate dioxygenase, which catalyzes the conversion of 4-Hydroxyphenylpyruvate to homogentisate, can lead to Type III tyrosinemia, a rare inherited disorder characterized by elevated levels of tyrosine in the blood and urine.
See also[edit | edit source]
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