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:
“So-called “austerity,” the stoic injunction, is the path towards universal destruction. It is the old, the fatal, competitive path. “Pull in your belt” is a slogan closely related to “gird up your loins,” or the guns-butter metaphor.”
—Wyndham Lewis (1882–1957)