Results 71 to 80 of about 178,348 (314)

High Protein Diet and Phenylalanine Hydroxylase Activities in Rats

open access: yesPteridines, 1989
The effects of a diet of 85% casein on the activities of the phenylalanine hydroxylases of rat liver and kidney have been compared. Whereas only the tetrahydrobiopterin-dependent activity of rat hepatic phenylalanine hydroxylase is significantly ...
Carty Michael P.   +2 more
doaj   +1 more source

ZZE-Configuration of chromophore ß-153 in C-phycocyanin from Mastigocladus laminosus [PDF]

open access: yes, 1987
The photochemistry of C-phycocyanin has been studied after denaturation in the dark. It shows an irreversible reaction which has characteristics of a Ζ,Ζ,Ε- to Z,Z,Z-isomerization of dihydrobilins. Its amplitude depends on the reaction conditions, with
Bode, W.   +7 more
core   +1 more source

Phenylalanine Binding Is Linked to Dimerization of the Regulatory Domain of Phenylalanine Hydroxylase

open access: yesBiochemistry, 2014
Analytical ultracentrifugation has been used to analyze the oligomeric structure of the isolated regulatory domain of phenylalanine hydroxylase. The protein exhibits a monomer–dimer equilibrium with a dissociation constant of ∼46 μM; this value is ...
Shengnan Zhang   +2 more
semanticscholar   +1 more source

Modulating Neurotoxic Effects of Prenatal Chlorpyrifos Exposure Through Probiotic and Vitamin D Gestational Supplementation: Unexpected Effects on Neurodevelopment and Sociability

open access: yesFood Frontiers, EarlyView.
This study investigates whether gestational probiotic and vitamin D supplementation can mitigate CPF effects in Wistar rats. While supplementation did not reverse CPF‐induced deficits, it induced notable neurodevelopmental changes in control animals, underscoring the need for further research on prenatal supplementation safety.
Mario Coca   +8 more
wiley   +1 more source

A method for phenylalanine self-monitoring using phenylalanine ammonia-lyase and a pre-existing portable ammonia detection system

open access: yesMolecular Genetics and Metabolism Reports, 2023
Phenylketonuria is an inborn error of phenylalanine metabolism caused by a phenylalanine hydroxylase deficiency. To prevent the occurrence of neurological symptoms and maternal complications resulting from phenylketonuria, patients must adhere to a ...
Yoichi Wada   +5 more
doaj   +1 more source

Ethanol triggers grape gene expression leading to anthocyanin accumulation during berry ripening [PDF]

open access: yes, 2002
Recent studies have shown that low doses of ethanol stimulate the maturation of some fruits. The present work showed that spraying Cabernet Sauvignon grapes, with 5% ethanol at veraison enhances the anthocyanin accumulation.
Chervin, Christian   +9 more
core   +3 more sources

Host–microbiota interaction drives 5‐hydroxyindole‐3‐acetic acid production to promote linear growth in infant mice

open access: yesiMetaOmics, EarlyView.
This study discovered that Lactiplantibacillus plantarum Hi188 promoted linear growth in postweaning mice. Transcriptomic analysis, untargeted metabolomics, and in vitro experiments showed that the elevated levels of 5‐hydroxyindole‐3‐acetic acid (5‐HIAA) activated the hepatic aryl hydrocarbon receptor (AhR) and subsequently promoted insulin‐like ...
Yongmei Yang   +7 more
wiley   +1 more source

THE IMPORTANCE OF DIET THERAPY IN THE TREATMENT OF PHENYLKETONURIA: A CASE REPORT

open access: yesElektronički Zbornik Radova Veleučilišta u Šibeniku, 2022
Phenylketonuria is the most common inborn error of amino acid metabolism. It is caused by the impossibility of converting the essential amino acid phenylalanine into tyrosine, most often due to insufficient production or a complete lack of the enzyme ...
Nikolina Gaćina, Jerko Vučak
doaj   +1 more source

Activation of Phenylalanine Hydroxylase by Phenylalanine Does Not Require Binding in the Active Site

open access: yesBiochemistry, 2014
Phenylalanine hydroxylase (PheH), a liver enzyme that catalyzes the hydroxylation of excess phenylalanine in the diet to tyrosine, is activated by phenylalanine. The lack of activity at low levels of phenylalanine has been attributed to the N-terminus of
K. Roberts   +3 more
semanticscholar   +1 more source

New insights into applications of base editor in hereditary disorders

open access: yesInterdisciplinary Medicine, EarlyView.
Abstract Hereditary disorders are a group of diseases caused by genetic mutations or chromosomal variations. Although the incidence of each genetic disorder is relatively low, patients affected by the disease generally experience a range of severe symptoms, including blindness, disability, and even premature death. In addition, the available treatments
Maoping Cai   +8 more
wiley   +1 more source

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