dopa /do·pa/ (do´pah) 3,4-dihydroxyphenylalanine, produced by oxidation of tyrosine by monophenol monooxygenase; it is the precursor of dopamine and an intermediate product in the biosynthesis of norepinephrine, epinephrine, and melanin. -dopa is the naturally occurring form; see levodopa.
DOPA
dopa
dopa [do´pah]
dopa
do·pa (d  p )n. Dihydroxyphenylalanine; an amino acid formed in the liver from tyrosine and converted to dopamine in the brain. |
DOPA
The common name for a natural chemical (3, 4-dihydroxyphenylalanine) made by the body during the process of making melanin.
Mentioned in: Albinism
dopa
[dō′pə]
an amino acid, produced by oxidation of tyrosine, that occurs naturally in plants and animals. It is a precursor of dopamine, epINEPHrine, norepinephrine, and melanin. See also dopamine hydrochloride, levodopa.
dopa [do´pah]
a compound produced by oxidation of tyrosine by tyrosinase; it is the precursor of dopamine and an intermediate product in the biosynthesis of norepinephrine, epinephrine, and melanin. The naturally occurring form is l-dopa (see levodopa), and is used to treat parkinson's disease and other forms of parkinsonism.
dopa
(dō´p
),
n an amino acid derived from tyrosine that occurs naturally in plants and animals. It is a precursor of dopamine, epinephrine, and norepinephrine.
), n an amino acid derived from tyrosine that occurs naturally in plants and animals. It is a precursor of dopamine, epinephrine, and norepinephrine.
dopa
L-3,4-dihydroxyphenylalanine. Key intermediate in two pathways; the production of melanins from tyrosine catalyzed by the copper-containing enzyme, tyrosinase, to produce dopa, or the biosynthesis of catecholamines catalyzed by the action of tyrosine. It is used in manganese poisoning. Called also L-dopa and levodopa.
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