where is phenylalanine hydroxylase found in the body
Phenylalanine hydroxylase In humans, this enzyme is expressed both in the liver and the kidney, and there is some indication that it may be differentially regulated in these tissues.[25] PAH is unusual among the aromatic amino acid hydroxylases for its involvement in catabolism; tyrosine and tryptophan hydroxylases, on the other hand, are primarily expressed in the central nervous system and catalyze rate-limiting steps in neurotransmitter/hormone biosynthesis.[13]
Small intestine Absorption of the majority of nutrients takes place in the jejunum, with the following notable exceptions:
Dopamine Dopamine is synthesized in a restricted set of cell types, mainly neurons and cells in the medulla of the adrenal glands.[13] The primary and minor metabolic pathways respectively are:
Swallowing 5) Closure of the nasopharynx