Results 21 to 30 of about 9,467 (211)
Studies on the relation between heme and nucleic acid syntheses in erythroid cell. II. Nucleic acid synthesis in erythroblast of anemic rat treated with aminopterin and bromouracil [PDF]
, 1968 With the bone marrow of anemic rats, which had received the repeated injections of phenylhydrazine once a day for three to four days, the effects of aminopterin and bromouracil on the nucleic acid metabolism of erythroblasts were observed in vivo ...
Shigehisa, Morio
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Acta Crystallographica Section E, 2013 The NiII atom in the title complex, [Ni(C8H5N5O3)(C2H8N2)(H2O)]·2H2O, is six-coordinated in a distorted octahedral geometry by a tridentate 2-amino-7-methyl-4-oxidopteridine-6-carboxylate (pterin) ligand, a bidentate ancillary ethane-1,2-diamine (en)
Siddhartha S. Baisya, Parag S. Roy
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Journal of Biological Chemistry, 1959 Publisher Summary This chapter describes the bacterial pterin deaminase. In the standard assay, the mixture contains 0.05 ml of pterin carboxylic acid, 0.8 ml of phosphate buffer, and 0.02 to 0.15 ml of enzyme in a final volume of 1.0 ml. Incubation is carried out at 23° in a 1-ml Beckman quartz cuvette with a light path of 1.00 cm. Reaction is begun
B, LEVENBERG, O, HAYAISHI
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The key role of nitric oxide in hypoxia: hypoxic vasodilation and energy supply-demand matching [PDF]
, 2013 Significance: a mismatch between energy supply and demand induces tissue hypoxia with the potential to cause cell death and organ failure. Whenever arterial oxygen concentration is reduced, increases in blood flow - 'hypoxic vasodilation' - occur in an ...
Alex Dyson +23 more
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Pteridines, 2018 A concise account of pterins in chemistry and biology and their applications in molecular sensors including their optical spectroscopic properties are described.
Goswami Shyamaprosad +3 more
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Exploring the scope of DBU-promoted amidations of 7-carboxymethyl-pterin [PDF]
, 2020 Pteridines are an important heterocycle often used in the development of pharmaceutically relevant compounds, and in the field of supramolecular chemistry.
Bockman, Anna
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Identification of YdhV as the first molybdoenzyme binding a Bis-Mo-MPT cofactor in escherichia coli [PDF]
, 2019 The oxidoreductase YdhV in Escherichia coli has been predicted to belong to the family of molybdenum/tungsten cofactor (Moco/Wco)-containing enzymes. In this study, we characterized the YdhV protein in detail, which shares amino acid sequence homology ...
Dau, Holger +7 more
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Theoretical Study on the Relative Energies of Neutral Pterin Tautomers
Pteridines, 2008 Current literature lists the lactam and lactim tautomers as the only major contributors to aqueous pterin structures. Density functional theory calculations were used to determine whether there are other significant neutral tautomers of pterin ...
Soniat Michael, Martin Christopher B.
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Tryptophan oxidation photosensitized by pterin
Free Radical Biology and Medicine, 2013 Pterins are normal components of cells and they have been previously identified as good photosensitizers under UV-A irradiation, inducing DNA damage and oxidation of nucleotides. In this work, we have investigated the ability of pterin (Ptr), the parent compound of oxidized pterins, to photosensitize the oxidation of another class of biomolecules ...
Thomas, Andrés +6 more
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7‐Substituted pterins in humans with suspected pterin‐4a‐carbinolamine dehydratase deficiency [PDF]
European Journal of Biochemistry, 1992 A recently described new form of hyperphenylalaninemia is characterized by the excretion of 7‐substituted isomers of biopterin and neopterin and 7‐oxo‐biopterin in the urine of patients. It has been shown that the 7‐substituted isomers of biopterin and neopterin derive from L‐tetrahydrobiopterin and D‐tetrahydroneopterin and are formed during ...
Adler, Carmen +7 more
openaire +3 more sources