biopterin


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bi·op·ter·in

(bī-op'ter-in),
A pterin found in yeast, the fruit fly, and in normal human urine. The reduced form of biopterin serves as a coenzyme for a number of enzyme-catalyzed reactions.

biopterin

An enzyme cofactor which is an oxidised degradation product of tetrahydrobiopterin, and involved in oxidation-reduction reactions.

biopterin

(bī-ŏp′tĕr-ĭn)
2-amino-4-hydroxy-6-(1,2-hydroxypropyl) pteridine, important in metabolizing phenylalanine. A deficiency of biopterin is a rare cause of phenylketonuria.
References in periodicals archive ?
Quantitative regulation of intracellular endothelial nitric-oxide synthase (eNOS) coupling by both tetrahydrobiopterin-eNOS stoichiometry and biopterin redox status: Insights from cells with tet-regulated GTP cyclohydrolase I expression.
Human monocytes/macrophages lack the enzyme 6-pyruvoyltetra-hydro biopterin synthase, which converts N[H.
Critical role for tetrahydrobiopterin recycling by dihydrofolate reductase in regulation of endothelial nitric-oxide synthase coupling: Relative importance of the de novo biopterin synthesis versus salvage pathways.
Reduced infectivity of a Leishmania donovani biopterin transporter genetic mutant and its use as an attenuated strain for vaccination.
show that in the chronic fatigue/chronic Lyme disease patient, biopterin (BH4) levels are low compared with normal controls.
Richardson MA, Read LL, Reilly MA, et al Analysis of plasma biopterin levels in psychiatric disorders suggests a common BH4 deficit in schizophrenia and schizoaffective disorder.
Ari Sutu Vitaminler, aminoasitler, sekerler ve biopterin ilerir.
Urinary excretion of biopterin and neopterin in psychiatric disorders.
Effective methylation in the liver is also important and may be achieved by supplementing with B vitamins, particularly folate, as this may have an effect on the rate of biopterin synthesis.
5), which may be due to the observation that (R)-NMSal deleted the allostery of tyrosine hydroxylase to biopterin and limited catecholamine synthesis (10).
Folate deficiency, biopterin and monoamine metabolism in depression.