Results 261 to 270 of about 252,905 (308)
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Transfusion, 1981
Four different media for erythrocyte preservation have been compared by studying 16 variables mainly describing the purine metabolism and glycolysis of the erythrocyte. The concentrations of the additives in the erythrocyte suspensions were as follows: adenine, 0.25 mmol/l; adenine, 0.75 mmol/l; adenine, 0.25 and inosine, 0.50 mmol/l; and adenine, 0.25
C H, de Verdier +4 more
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Four different media for erythrocyte preservation have been compared by studying 16 variables mainly describing the purine metabolism and glycolysis of the erythrocyte. The concentrations of the additives in the erythrocyte suspensions were as follows: adenine, 0.25 mmol/l; adenine, 0.75 mmol/l; adenine, 0.25 and inosine, 0.50 mmol/l; and adenine, 0.25
C H, de Verdier +4 more
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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
O, Dolgounitcheva +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
J F, Henderson +3 more
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The adenine methylation debate
Science, 2022N 6 -methyl-2′-deoxyadenosine (6mA) is less prevalent in metazoan DNA than thought
Konstantinos, Boulias +1 more
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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 ...
A, Kreuger, O, Akerblom
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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 ...
A 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 ...
A W, Schwartz, C G, Bakker
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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.
C, PONNAMPERUMA, R M, LEMMON, M, CALVIN
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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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Biochemical Medicine, 1970
Abstract A new, dynamic cycling procedure for total adenine nucleotides (ATP + ADP + AMP) is described. This procedure permits the measurement of adenine nucleotides in TCA extracts of fresh or frozen blood samples without requiring the removal of TCA from extract.
R P, Miech, M C, Tung
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Abstract A new, dynamic cycling procedure for total adenine nucleotides (ATP + ADP + AMP) is described. This procedure permits the measurement of adenine nucleotides in TCA extracts of fresh or frozen blood samples without requiring the removal of TCA from extract.
R P, Miech, M C, Tung
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On the mutagenic action of adenine
Leukemia Research, 2007The deamination of cytosine and adenine is mutagenic; the deamination of guanine is not. The deamination of cytosine leads to G=C-->A=T point mutation and to G-->A and C-->T transition in the DNA molecule; the deamination of adenine leads to the opposite A-->G and T-->C transition.
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