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Showing 1-30 of 47 results for "N7502" within Papers
Tiziana Bachetti et al.
Journal of molecular and cellular cardiology, 37(2), 515-523 (2004-07-28)
Objective. - Arginase is a nitric oxide synthase-alternative pathway for l-arginine breakdown leading to biosynthesis of urea and l-ornithine. Arginase pathway is inducible by inflammatory molecules-such as cytokines and bacterial endotoxin-in macrophages and smooth muscle cells. The presence of an
Manjeet Deshmukh et al.
Journal of medicinal chemistry, 53(3), 1038-1047 (2010-01-13)
The objective of the present study was to identify a camptothecin (CPT) prodrug with optimal release and cytotoxicity properties for immobilization on a passively targeted microparticle delivery system. A series of alpha-amino acid ester prodrugs of CPT were synthesized, characterized
Varongsiri Kemsawasd et al.
Applied microbiology and biotechnology, 99(23), 10191-10207 (2015-08-11)
In this study, the influence of twenty different single (i.e. 19 amino acids and ammonium sulphate) and two multiple nitrogen sources (N-sources) on growth and fermentation (i.e. glucose consumption and ethanol production) performance of Saccharomyces cerevisiae and of four wine-related
Hany M El-Bassossy et al.
Vascular pharmacology, 57(5-6), 194-200 (2012-01-28)
Increased arginase activity has been reported in a variety of disease conditions characterized by vascular dysfunction. In the present study, the potentially protective effect of arginase inhibition against the hypertension associated with diabetes has been investigated. Diabetes was induced by
E V Sycheva et al.
Mikrobiologiia, 76(6), 805-812 (2008-02-27)
Overproduction of noncanonical amino acids norvaline and norleucine by Escherichia coli with inactivated acetohydroxy acid synthases was demonstrated. The cultivation conditions for the overproduction of noncanonical amino acids were studied. The effect of the restoration of acetohydroxy acid synthase activity
Kazuki Ogata et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 19(37), 12356-12375 (2013-08-03)
The NCN-pincer Pd-complex-bound norvalines Boc-D/L-[PdCl(dpb)]Nva-OMe (1) were synthesized in multigram quantities. The molecular structure and absolute configuration of 1 were unequivocally determined by single-crystal X-ray structure analysis. The robustness of 1 under acidic/basic conditions provides a wide range of N-/C-terminus
W Sosroseno et al.
Oral microbiology and immunology, 21(3), 145-150 (2006-04-22)
The aim of the present study was to determine whether or not lipopolysaccharide from Actinobacillus actinomycetemcomitans could stimulate arginase activity in a murine macrophage cell line (RAW264.7 cells). RAW264.7 cells were treated with A. actinomycetemcomitans-lipopolysaccharide or lipopolysaccharide from Escherichia coli
P Krumpochova et al.
Journal of pharmaceutical and biomedical analysis, 114, 398-407 (2015-06-27)
The analysis of amino acids has become a central task in many aspects. While amino acid analysis has traditionally mainly been carried out using either gas chromatography (GC) in combination with flame ionization detection or liquid chromatography (LC) with either
Hamada AbdElgawad et al.
Plant science : an international journal of experimental plant biology, 231, 1-10 (2015-01-13)
Increasing atmospheric CO2 will affect plant growth, including mitigation of stress impact. Such effects vary considerably between species-groups. Grasses (Lolium perenne, Poa pratensis) and legumes (Medicago lupulina, Lotus corniculatus) were subjected to drought, elevated temperature and elevated CO2. Drought inhibited
Giorgia Mandili et al.
Journal of hepatology, 62(3), 573-580 (2014-10-16)
Ischemia-reperfusion (IR) of liver results in hepatocytes (HP) and sinusoidal endothelial cells (LSEC) irreversible damage. Ischemic preconditioning protects IR damage upon adenosine A2a receptor (A2aR) stimulation. Understanding the phenotypic changes that underlie hepatocellular damage and protection is critical to optimize
Thekla Cordes et al.
Methods in molecular biology (Clifton, N.J.), 1978, 219-241 (2019-05-24)
Metabolism plays a central role in virtually all diseases, including diabetes, cancer, and neurodegeneration. Detailed analysis is required to identify the specific metabolic pathways dysregulated in the context of a given disease or biological perturbation. Measurement of metabolite concentrations can
Esther W Lim et al.
Methods in molecular biology (Clifton, N.J.), 2088, 51-71 (2020-01-02)
Oxidation-reduction (redox) reactions are ubiquitous in biology and typically occur in specific subcellular compartments. In cells, the electron transfer between molecules and organelles is commonly facilitated by pyridine nucleotides such as nicotinamide adenine dinucleotide phosphate (NADPH) and nicotinamide adenine dinucleotide
Jaclyn Bailey et al.
The FEBS journal, 278(17), 3140-3151 (2011-07-14)
Bovine glutamate dehydrogenase is potently inhibited by zinc and the major impact is on V(max) suggesting a V-type effect on catalysis or product release. Zinc inhibition decreases as glutamate concentrations decrease suggesting a role for subunit interactions. With the monocarboxylic
Luke Hunter et al.
Organic & biomolecular chemistry, 3(5), 732-734 (2005-02-26)
The dopa-sulfinylnorvaline component of ustiloxins A and B has been prepared using an Evans salen-Al-catalysed aldol reaction with a 6-mercaptoisovanillin derivative, followed by incorporation of the norvaline group and asymmetric oxidation of the resulting sulfide to give the corresponding sulfoxide.
Pingping Ren et al.
The journal of physical chemistry. B, 115(12), 2814-2823 (2011-03-12)
DL-Norvaline (NVA) is an important pharmaceutical intermediate and undergoes two polymorphic transitions between 140 and 300 K. To understand molecular dynamics of NVA accompanied with these transitions, we conducted a comprehensive study on its molecular motions at multiple time scales
Carl Henrik Görbitz
The journal of physical chemistry. B, 115(10), 2447-2453 (2011-02-22)
The amino acid DL-norvaline undergoes two solid-solid phase transitions between room temperature and -180 °C. Single-crystal X-ray diffraction studies show that the first of these transitions, taking place around -80 °C, is completely reversible with respect to crystal quality, whereas
Ramasamy Sankaranarayanan et al.
Journal of molecular biology, 375(4), 1052-1063 (2007-12-08)
Mycobacterium tuberculosis ornithine carbamoyltransferase (Mtb OTC) catalyzes the sixth step in arginine biosynthesis; it produces citrulline from carbamoyl phosphate (CP) and ornithine (ORN). Here, we report the crystal structures of Mtb OTC in orthorhombic (form I) and hexagonal (form II)
Sarah A Wacker et al.
Protein science : a publication of the Protein Society, 19(10), 1820-1829 (2010-07-29)
Bovine glutamate dehydrogenase (GDH) is allosterically regulated and requires substrate-induced subunit interactions for maximum catalytic activity. Steady-state and presteady-state kinetics indicate that the rate-limiting step depends on the nature of the substrate and are likely associated with conformational fluctuations necessary
Yi Min et al.
Journal of pharmaceutical and biomedical analysis, 114, 247-253 (2015-06-16)
Superficially porous particles (SPPs) demonstrate superior efficiency than totally porous particles in chiral separations. In order to obtain high efficiency and fast separation, sub-2 μm SPPs with high surface area are synthesized, and with teicoplanin bonded, such materials are successfully
Xin Chen et al.
Nucleic acids research, 39(1), 235-247 (2010-09-02)
To prevent potential errors in protein synthesis, some aminoacyl-transfer RNA (tRNA) synthetases have evolved editing mechanisms to hydrolyze misactivated amino acids (pre-transfer editing) or misacylated tRNAs (post-transfer editing). Class Ia leucyl-tRNA synthetase (LeuRS) may misactivate various natural and non-protein amino
Correlations between olfactory discrimination, olfactory receptor neuron responses and chemotopy of amino acids in fishes.
Tine Valentincic et al.
Chemical senses, 30 Suppl 1, i312-i314 (2005-03-02)
Nevena Cvetesic et al.
The Journal of biological chemistry, 287(30), 25381-25394 (2012-06-01)
Comprehensive steady-state and transient kinetic studies of the synthetic and editing activities of Escherichia coli leucyl-tRNA synthetase (LeuRS) demonstrate that the enzyme depends almost entirely on post-transfer editing to endow the cell with specificity against incorporation of norvaline into protein.
A James Link et al.
Journal of the American Chemical Society, 126(34), 10598-10602 (2004-08-26)
An improved protocol for copper-catalyzed triazole formation on the bacterial cell surface is described. Addition of highly pure CuBr to cells treated with azidohomoalanine (2) leads to ca. 10-fold more extensive cell surface labeling than previously observed. This highly active
Meteoritic C alpha-methylated alpha-amino acids and the homochirality of life: searching for a link.
Marco Crisma et al.
Angewandte Chemie (International ed. in English), 43(48), 6695-6699 (2004-12-14)
Nathalie Le Floc'h et al.
PloS one, 9(8), e104605-e104605 (2014-08-08)
As nutritional status and inflammation are strongly connected, feeding and nutritional strategies could be effective to improve the ability of pigs to cope with disease. The aims of this study were to investigate the impact of a feed restriction on
Megan L Matthews et al.
Proceedings of the National Academy of Sciences of the United States of America, 106(42), 17723-17728 (2009-10-10)
The alpha-ketoglutarate-dependent hydroxylases and halogenases employ similar reaction mechanisms involving hydrogen-abstracting Fe(IV)-oxo (ferryl) intermediates. In the halogenases, the carboxylate residue from the His(2)(Asp/Glu)(1) "facial triad" of iron ligands found in the hydroxylases is replaced by alanine, and a halide ion
Jens Neu et al.
Physical chemistry chemical physics : PCCP, 20(1), 276-283 (2017-12-06)
dl-Norvaline is a molecular crystal at room temperature and it undergoes a phase transition when cooled below 190 K. This phase transition is believed to be Martensitic, thus making it of particular interest for molecular machines. In this paper we
Hanne Sørup Tastesen et al.
PloS one, 9(11), e112859-e112859 (2014-11-13)
Low-protein and high-protein diets regulate energy metabolism in animals and humans. To evaluate whether different dietary protein sources modulate energy balance when ingested at average levels obesity-prone male C57BL/6J mice were pair-fed high-fat diets (67 energy percent fat, 18 energy
Xiao-Long Zhou et al.
Nucleic acids research, 41(21), 9825-9838 (2013-08-24)
Aminoacyl-tRNA synthetases should ensure high accuracy in tRNA aminoacylation. However, the absence of significant structural differences between amino acids always poses a direct challenge for some aminoacyl-tRNA synthetases, such as leucyl-tRNA synthetase (LeuRS), which require editing function to remove mis-activated
Petros Chatzigeorgiou et al.
The journal of physical chemistry. B, 114(3), 1294-1300 (2010-01-02)
The structural modifications of the amino acid DL-Norvaline have been studied using differential scanning calorimetry (DSC) and Raman spectroscopy. DSC results showed that this amino acid undergoes two solid-solid phase transitions at -116.9 and -76.1 degrees C in the temperature
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