Results 31 to 40 of about 248,375 (292)

Phenylalanine-pyruvate aminotransferase activity in chicks subjected to phenylalanine imbalance or phenylalanine toxicity

Poultry Science, 2009
Two experiments were done to determine the influence of Phe imbalance and excess on Phe-pyruvate aminotransferase (PAT) activity in the chick. Five replicates of 3 chicks (experiment 1) or 2 chicks (experiment 2) of a commercial brown egg layer strain were fed a semipurified diet for 1 wk and then received experimental diets for 10 d.
J, Lu, R E, Austic
openaire   +2 more sources

Phenylalanine hydroxylase activity and expression in chicks subjected to phenylalanine imbalance or phenylalanine toxicity

Poultry Science, 2009
Experiments were performed to investigate the activity of hepatic Phe hydroxylase (PAH) and plasma amino acid concentrations under conditions of Phe imbalance or toxicity in chicks fed on experimental diets from 7 to 14 or 16 d of age. In experiment 1, Phe imbalance was created by adding 10% of a mixture of indispensable amino acids lacking Phe (IAA ...
F M, Lartey, R E, Austic
openaire   +2 more sources

Aromatic Dipeptide Homologue-Based Hydrogels for Photocontrolled Drug Release

Nanomaterials, 2022
Peptide-based hydrogels are considered of special importance due to their biocompatibility and biodegradability. They have a wide range of applications in the biomedical field, such as drug delivery, tissue engineering, wound healing, cell culture media,
Chloé Guilbaud-Chéreau, Bhimareddy Dinesh, Laurène Wagner, Olivier Chaloin, Cécilia Ménard-Moyon, Alberto Bianco   +5 more
doaj   +1 more source

Identification of the Allosteric Site for Phenylalanine in Rat Phenylalanine Hydroxylase [PDF]

Journal of Biological Chemistry, 2016
Liver phenylalanine hydroxylase (PheH) is an allosteric enzyme that requires activation by phenylalanine for full activity. The location of the allosteric site for phenylalanine has not been established. NMR spectroscopy of the isolated regulatory domain (RDPheH(25-117) is the regulatory domain of PheH lacking residues 1-24) of the rat enzyme in the ...
Shengnan, Zhang, Paul F, Fitzpatrick
openaire   +2 more sources

Nitrogen Economy and Nitrogen Environmental Interactions in Conifers

Agronomy, 2016
Efficient acquisition, assimilation and economy of nitrogen are of special importance in trees that must cope with seasonal periods of growth and dormancy over many years.
Rafael A. Cañas, Fernando de la Torre, Maria Belén Pascual, Concepción Avila, Francisco M. Cánovas   +4 more
doaj   +1 more source

Combining metabolite doping and metabolic engineering to improve 2-phenylethanol production by engineered cyanobacteria

Frontiers in Bioengineering and Biotechnology, 2022
2-Phenylethanol (2-PE) is a rose-scented aromatic compound, with broad application in cosmetic, pharmaceutical, food and beverage industries. Many plants naturally synthesize 2-PE via Shikimate Pathway, but its extraction is expensive and low-yielding ...
Giulia Usai, Giulia Usai, Alessandro Cordara, Angela Re, Maria Francesca Polli, Maria Francesca Polli, Giuseppe Mannino, Cinzia Margherita Bertea, Debora Fino, Candido Fabrizio Pirri, Candido Fabrizio Pirri, Barbara Menin   +11 more
doaj   +1 more source

Phenylalanine modulates casein synthesis in bovine mammary epithelial cells by influencing amino acid transport and protein synthesis pathways

Frontiers in Nutrition
The efficiency of phenylalanine (Phe) utilization for milk protein synthesis in dairy cows is limited, and its uptake and metabolic mechanisms in the mammary tissue remaining unclear. This study investigated the effects of Phe availability (0.07, 0.14, 0.
Yuanyuan Xing, Yuanyuan Xing, Yuanyuan Xing, Yixuan Luo, Yixuan Luo, Mei Sun, Mei Sun, Jing Yang, Jing Yang, Shaoxiong Lin, Shaoxiong Lin, Xiaojia Mu, Xiaojia Mu, Xiaoyu Niu, Xiaoyu Niu, Dabiao Li, Dabiao Li, Dabiao Li, Yuanyuan Liu   +18 more
doaj   +1 more source

The Response Strategy of Maize, Pea and Broad Bean Plants to Different Osmotic Potential Stress [PDF]

Journal of Stress Physiology & Biochemistry, 2013
This investigation was conducted to study the tolerance strategy of maize, broad bean and pea plants to salinity stress with exogenous applications of proline or phenylalanine on seed germination and seedlings growth. From the results obtained, it can be
Hamdia M. Abd El-Samad, M.A.K. Shadadd
doaj  

Immune activation and inflammation in patients with cardiovascular disease are associated with elevated phenylalanine-to-tyrosine ratios

Pteridines, 2013
Higher serum neopterin concentrations and kynurenine-to-tryptophan (Kyn/Trp) ratios are associated with increased mortality in patients with coronary artery disease (CAD). Preferentially, Th1-type cytokine interferon-γ stimulates tryptophan breakdown and
Mangge Harald, Schnedl Wolfgang J., Schröcksnadel Sebastian, Geisler Simon, Murr Christian, Fuchs Dietmar   +5 more
doaj   +1 more source

Distinct Metabolites for Photoreactive l-Phenylalanine Derivatives in Klebsiella sp. CK6 Isolated from Rhizosphere of a Wild Dipterocarp Sapling

Molecules, 2013
Photoaffinity labeling is a reliable analytical method for biological functional analysis. Three major photophores—aryl azide, benzophenone and trifluoromethyldiazirine—are utilized in analysis.
Yasumaru Hatanaka, Yasuyuki Hashidoko, Irnayuli R. Sitepu, Yasuko Sakihama, Dongyeop Kim, Reika Isoda, Takashi Murotani, Masashi Okamoto, Haruka Ikemoto, Yasuyuki Muto, Munenori Sakurai, Yuta Murai, Wataru Hisano, Lei Wang, Makoto Hashimoto   +14 more
doaj   +1 more source