Search Within
Applied Filters:
Showing 1-30 of 257 results for "


" within Papers
Sort by Relevance
Yasuo Ido et al.
PloS one, 10(2), e0115341-e0115341 (2015-02-04)
The aging process is perceived as resulting from a combination of intrinsic factors such as changes in intracellular signaling and extrinsic factors, most notably environmental stressors. In skin, the relationship between intrinsic changes and keratinocyte function is not clearly understood.
Georg A Sprenger
Applied microbiology and biotechnology, 75(4), 739-749 (2007-04-17)
Recombinant strains of Escherichia coli K-12 for the production of the three aromatic amino acids (L-phenylalanine, L-tryptophan, L-tyrosine) have been constructed. The largest demand is for L-phenylalanine (L-Phe), as it can be used as a building block for the low-calorie
Takayoshi Tagami et al.
Biochimica et biophysica acta, 1834(1), 329-335 (2013-03-05)
Glycoside hydrolase family 31 α-glucosidases (31AGs) show various specificities for maltooligosaccharides according to chain length. Aspergillus niger α-glucosidase (ANG) is specific for short-chain substrates with the highest k(cat)/K(m) for maltotriose, while sugar beet α-glucosidase (SBG) prefers long-chain substrates and soluble
János Bókay et al.
Orvosi hetilap, 154(18), 683-687 (2013-05-01)
Elevated maternal phenylalanine levels during pregnancy are teratogenic, and may result in embryo-foetopathy, which could lead to stillbirth, significant psychomotor handicaps and birth defects. This foetal damage is known as maternal phenylketonuria. Women of childbearing age with all forms of
Oliver C Witard et al.
The American journal of clinical nutrition, 99(1), 86-95 (2013-11-22)
The intake of whey, compared with casein and soy protein intakes, stimulates a greater acute response of muscle protein synthesis (MPS) to protein ingestion in rested and exercised muscle. We characterized the dose-response relation of postabsorptive rates of myofibrillar MPS
Rico Schwarz et al.
Journal of medicinal chemistry, 56(11), 4252-4263 (2013-05-04)
Chemical cross-linking combined with an enzymatic digestion and mass spectrometric analysis of the reaction products has evolved into an alternative strategy to structurally resolve protein complexes. We investigated conformational changes in peroxisome proliferator-activated receptor α (PPARα) upon ligand binding. Using
Marcin Horbowicz et al.
Acta biochimica Polonica, 62(2), 235-240 (2015-04-10)
Methyl jasmonate has a strong effect on secondary metabolizm in plants, by stimulating the biosynthesis a number of phenolic compounds and alkaloids. Common buckwheat (Fagopyrum esculentum Moench) is an important source of biologically active compounds. This research focuses on the
Tianwen Zhu et al.
Gene, 529(1), 80-87 (2013-08-13)
The value of genotyping to predict variant phenotypes in patients with phenylalanine hydroxylase (Pah) deficiency is a matter of debate. However, there exists no comprehensive population relationship study focused on the Han Chinese. We analyzed genotype-phenotype correlation for 186 different
Plasma concentrations of phenyllactic acid in phenylketonuria.
P C Clemens et al.
Journal of inherited metabolic disease, 13(2), 227-228 (1990-01-01)
Sandra C van Calcar et al.
Journal of the Academy of Nutrition and Dietetics, 112(8), 1201-1210 (2012-07-24)
Phenylketonuria (PKU), an inborn error in phenylalanine metabolism, requires lifelong nutrition management with a low-phenylalanine diet, which includes a phenylalanine-free amino acid-based medical formula to provide the majority of an individual's protein needs. Compliance with this diet is often difficult
Antonella Denise Losinno et al.
Autophagy, 17(2), 439-456 (2020-01-28)
Cruzipain, the major cysteine protease of the pathogenic protozoa Trypanosoma cruzi, is an important virulence factor that plays a key role in the parasite nutrition, differentiation and host cell infection. Cruzipain is synthesized as a zymogen, matured, and delivered to
Zheng Xiang et al.
Nature methods, 10(9), 885-888 (2013-08-06)
Natural proteins often rely on the disulfide bond to covalently link side chains. Here we genetically introduce a new type of covalent bond into proteins by enabling an unnatural amino acid to react with a proximal cysteine. We demonstrate the
P Klassen et al.
The American journal of clinical nutrition, 73(3), 647-652 (2001-03-10)
Plasma free amino acid patterns in health and disease have been reported. However, amino acid concentrations in adult populations in developing countries and in patients with dengue, as a model for an acute infectious viral disease endemic to the tropics
Cyril Basquin et al.
The EMBO journal, 34(16), 2147-2161 (2015-07-01)
Endocytosis controls many functions including nutrient uptake, cell division, migration and signal transduction. A clathrin- and caveolin-independent endocytosis pathway is used by important physiological cargos, including interleukin-2 receptors (IL-2R). However, this process lacks morphological and dynamic data. Our electron microscopy
S Engelborghs et al.
Neurochemical research, 28(8), 1145-1150 (2003-07-02)
To study changes in amino acid metabolism and biogenic amines in Parkinson's disease, we set up a prospective study and measured biogenic amines, their main metabolites, and 22 different amino acids, in cerebrospinal fluid of Parkinson's disease patients (n =
Terrence R Burke
Current topics in medicinal chemistry, 6(14), 1465-1471 (2006-08-22)
Hydrolytically-stable phosphotyrosyl (pTyr) mimetics can be useful tools for the study of cellular signal transduction processes. Among pTyr mimetics reported to date, phosphono(diflouromethyl)phenylalanine (F(2)Pmp) has shown particular utility when dealing with protein-tyrosine phosphatases (PTPs). The current overview presents the development
Stefanie Keil et al.
Pediatrics, 131(6), e1881-e1888 (2013-05-22)
Sapropterin dihydrochloride, the synthetic form of 6R-tetrahydrobiopterin (BH4), is an approved drug for the treatment of patients with BH4-responsive phenylketonuria (PKU). The purpose of this study was to assess genotypes and data on the long-term effects of BH4/sapropterin on metabolic
S Ishiwata et al.
The Tohoku journal of experimental medicine, 176(1), 61-68 (1995-05-01)
To evaluate the clinical usefulness of serum 1-methyladenosine, several modifications have been made in our previously established inhibition ELISA system. Horseradish peroxidase (HRP) labeled anti-mouse IgG and 3,3',5,5'-tetramethylbenzidine (TMBZ) were used as a secondary antibody and a substrate, respectively. The
Francesca Froldi et al.
The EMBO journal, 38(7) (2019-02-26)
Rewired metabolism of glutamine in cancer has been well documented, but less is known about other amino acids such as histidine. Here, we use Drosophila cancer models to show that decreasing the concentration of histidine in the diet strongly inhibits
Marte I Flydal et al.
IUBMB life, 65(4), 341-349 (2013-03-05)
Mammalian phenylalanine hydroxylase (PAH) catalyzes the rate-limiting step in the phenylalanine catabolism, consuming about 75% of the phenylalanine input from the diet and protein catabolism under physiological conditions. In humans, mutations in the PAH gene lead to phenylketonuria (PKU), and
Bart Pennings et al.
The American journal of clinical nutrition, 98(1), 121-128 (2013-05-03)
Older individuals generally experience a reduced food-chewing efficiency. As a consequence, food texture may represent an important factor that modulates dietary protein digestion and absorption kinetics and the subsequent postprandial protein balance. We assessed the effect of meat texture on
Daniela Vullo et al.
Bioorganic & medicinal chemistry letters, 17(15), 4107-4112 (2007-06-02)
An activation study of the human carbonic anhydrase (hCA, EC isozymes VII and XIV using a small library of natural/non-natural amino acids and aromatic/heterocyclic amines is reported. hCA VII was efficiently activated by L-/D-His, dopamine and serotonin (K(A)s of
Mark R Charbonneau et al.
Communications biology, 4(1), 898-898 (2021-07-24)
The development of therapeutics depends on predictions of clinical activity from pre-clinical data. We have previously described SYNB1618, an engineered bacterial therapeutic (synthetic biotic) for the treatment of Phenylketonuria (PKU), a rare genetic disease that leads to accumulation of plasma
Aquilino Lantero et al.
The Journal of neuroscience : the official journal of the Society for Neuroscience, 34(15), 5385-5395 (2014-04-11)
Transforming growth factor-β1 (TGF-β1) protects against neuroinflammatory events underlying neuropathic pain. TGF-β signaling enhancement is a phenotypic characteristic of mice lacking the TGF-β pseudoreceptor BAMBI (BMP and activin membrane-bound inhibitor), which leads to an increased synaptic release of opioid peptides
E Mönch et al.
European journal of pediatrics, 149 Suppl 1, S17-S24 (1990-01-01)
In the course of the collaborative study of children treated for PKU, urine samples from a total of 165 patients were analysed at six different times: in the newborn period before onset of therapy, after beginning of dietary management, during
Benjamin J Des Soye et al.
Cell chemical biology, 26(12), 1743-1754 (2019-11-11)
The site-specific incorporation of non-canonical amino acids (ncAAs) into proteins via amber suppression provides access to novel protein properties, structures, and functions. Historically, poor protein expression yields resulting from release factor 1 (RF1) competition has limited this technology. To address
Ran-ran Shi et al.
Cancer immunology, immunotherapy : CII, 62(11), 1723-1732 (2013-10-01)
PIWIL2, a member of PIWI/AGO family, is expressed in germline stem cells and precancerous stem cells, but not in adult somatic cells. PIWIL2 plays an important role in tumor development. It is considered as a cancer–testis antigen (CT80). It has
Vayu Maini Rekdal et al.
Science (New York, N.Y.), 364(6445) (2019-06-15)
The human gut microbiota metabolizes the Parkinson's disease medication Levodopa (l-dopa), potentially reducing drug availability and causing side effects. However, the organisms, genes, and enzymes responsible for this activity in patients and their susceptibility to inhibition by host-targeted drugs are
Peptide deactivation: Spectroscopy meets theory.
Wolfgang Domcke et al.
Nature chemistry, 5(4), 257-258 (2013-03-21)
Mark G Jones et al.
Clinica chimica acta; international journal of clinical chemistry, 361(1-2), 150-158 (2005-07-05)
Previous work by others have suggested the occurrence of one or more chemical or metabolic 'markers' for ME/CFS including specific amino acids and organic acids and a number of unidentified compounds (CFSUM1, CFSUM2). We have shown elsewhere that CFSUM1 is
Page 1 of 9
Page 1 of 9