Results 301 to 310 of about 399,190 (328)
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Vertical Ionization Energies of Adenine and 9-Methyl Adenine
The Journal of Physical Chemistry A, 2009Vertical ionization energies of 9-H adenine and 9-methyl adenine have been calculated with the following, ab initio, electron propagator methods: the outer valence Green's function (OVGF), partial third-order theory (P3), and the third-order algebraic diagrammatic construction, or ADC(3). Basis set effects have been systematically examined. All methods
Joseph Vincent Ortiz +2 more
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Mechanisms of inhibition of adenine phosphoribosyltransferase by adenine nucleosides and nucleotides
Canadian Journal of Biochemistry, 1970Kinetic studies of the inhibition of adenine phosphoribosyltransferase by adenine 6′-deoxyallofuranoside and 2′-deoxyadenylate indicate that both compounds bind to free enzyme and to the enzyme–phosphoribosylpyrophosphate complex, although they bind with different relative affinities to each enzyme form. The sites to which these inhibitors bind appear
Henderson Jf, Hori M, Palser Hm, Gadd Re
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Journal of Molecular Structure: THEOCHEM, 1999 Abstract Adenine is one of the four principle bases of nucleic acid, the essential molecule of life and evolution. Apparently, only one configuration of adenine exists in nature giving it unique chemical and biological properties. Using a force field type potential model with parameters fitted to the nucleic acid bases, proteins and other biological ...
Marcela R. Beltrán +4 more
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Science, 1989
Oligomerization of HCN (1 molar) in the presence of added formaldehyde (0.5 molar) produced an order of magnitude more 8-hydroxymethyladenine than adenine or any other biologically significant purine. This result suggests that on the prebiotic Earth, nucleoside analogs may have been synthesized directly in more complex mixtures of HCN with other ...
Alan W. Schwartz, C. G. Bakker
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Oligomerization of HCN (1 molar) in the presence of added formaldehyde (0.5 molar) produced an order of magnitude more 8-hydroxymethyladenine than adenine or any other biologically significant purine. This result suggests that on the prebiotic Earth, nucleoside analogs may have been synthesized directly in more complex mixtures of HCN with other ...
Alan W. Schwartz, C. G. Bakker
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The Journal of Chemical Physics, 2005
Ab initio calculations and time-resolved photoionization spectroscopy were carried out to characterize the role of the lowest two πσ* excited states for the photoinduced processes in the adenine monomer, adenine dimer, and adenine–water clusters. The calculations show—with respect to the monomer—a stabilization of 0.11–0.14 eV for the πσ* states in ...
Ritze, HH +6 more
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Ab initio calculations and time-resolved photoionization spectroscopy were carried out to characterize the role of the lowest two πσ* excited states for the photoinduced processes in the adenine monomer, adenine dimer, and adenine–water clusters. The calculations show—with respect to the monomer—a stabilization of 0.11–0.14 eV for the πσ* states in ...
Ritze, HH +6 more
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CRC Critical Reviews in Clinical Laboratory Sciences, 1981
The recent Food and Drug Administration (U.S.) approval of a new blood preservative (CPDA-1) which contains adenine not only introduces a new blood product into the American blood banking system, but also heralds the advent of novel approaches to blood product preservation.
Carl C. Peck +3 more
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The recent Food and Drug Administration (U.S.) approval of a new blood preservative (CPDA-1) which contains adenine not only introduces a new blood product into the American blood banking system, but also heralds the advent of novel approaches to blood product preservation.
Carl C. Peck +3 more
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Biochimica et Biophysica Acta, 1953
Abstract A new nucleotide has been shown to be present in commercial samples of adenosine-5′-triphosphate (ATP). The analytical data suggest the structure adenosine-5′-tetraphosphate.
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Abstract A new nucleotide has been shown to be present in commercial samples of adenosine-5′-triphosphate (ATP). The analytical data suggest the structure adenosine-5′-tetraphosphate.
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Adenine Consumption in Stored Citrate-Phosphate- Dextrose-Adenine Blood
Vox Sanguinis, 1980Abstract. Plasma adenine concentration was measured in five units of citrate‐phosphate‐dextrose‐adenine (0.25 mmol/1 adenine) whole blood during storage at +4°C. The adenine levels decreased to 50% in 9–10 days and to approximately 15% in 3 weeks. In spite of this rapid consumption of adenine, the adenosine triphosphate levels were well maintained ...
O. Åkerblom, A. Kreuger
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On the interaction of hypoxanthine with adenine
Experientia, 1967Une conversion non-enzymatique d'hypoxanthine en adenine fut proposee sur la base d'observations spectrophotometriques obtenues de solutions contenant adenine et hypoxanthine dans 1–5M de phosphate d'ammonium. Les resultats fournis par les experiences sur la radioactivite ne confirme pas la conclusion emise parBowne2 que hypoxanthine et adenine ...
J. Ludowieg, J. D. Benmaman
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The Radiation Decomposition of Adenine
Radiation Research, 1963The radiolysis of 0.1% solutions of adenine in water leads to the formation of two major products: 4,6-diamino-5formamidopyrimidine and 8- hydroxyadenine. The two compounds account for about 80% of the decomposed adenine. Minor products are hypoxanthine and 4-amino-5formamido-6- hydroxypyrimidine.
Richard M. Lemmon +2 more
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