Related Enzymes
Phenylalanine hydroxylase is closely related to two other enzymes:
- tryptophan hydroxylase (EC number 1.14.16.4), which controls levels of serotonin in the brain and the gastrointestinal tract
- tyrosine hydroxylase (EC number 1.14.16.2), which controls levels of dopamine, epinephrine, and norepinephrine in the brain and the adrenal medulla.
The three enzymes are homologous, that is, are thought to have evolved from the same ancient hydroxylase.
Read more about this topic: Phenylalanine Hydroxylase
Famous quotes containing the word related:
“The question of place and climate is most closely related to the question of nutrition. Nobody is free to live everywhere; and whoever has to solve great problems that challenge all his strength actually has a very restricted choice in this matter. The influence of climate on our metabolism, its retardation, its acceleration, goes so far that a mistaken choice of place and climate can not only estrange a man from his task but can actually keep it from him: he never gets to see it.”
—Friedrich Nietzsche (1844–1900)