Results 261 to 270 of about 3,173,825 (322)
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Inhibition of lettuce seed germination and seedling growth by antimetabolites of nucleic acids, and reversal by nucleic acid precursors and gibberellic acid

Planta, 1966
Germination of White Paris lettuce seeds is inhibited by 2-thiouracil up to 24 hours. This inhibition is reversed by RNA precursors only. Seedling growth of lettuce is inhibited by 2-thiouracil and 5-fluorouracil; and white the effect of 2-thiouracil is counteracted by RNA precursors, inhibition due to 5-fluorouracil is not reversed significantly by ...
A. Khan
exaly   +4 more sources

The Role of the Membrane in the Utilization of Nucleic Acid Precursor

CRC Critical Reviews in Biochemistry, 1974
(1974). The Role of the Membrane in the Utilization of Nucleic Acid Precursor. CRC Critical Reviews in Biochemistry: Vol. 2, No. 2, pp. 259-310.
Joy Hochstadt, B. Magasanik
openaire   +3 more sources

Metabolism of caffeine to nucleic acid precursors in mammalian cells

Mutation Research, 1976
Caffeine is rapidly metabolized in human and mouse cells in culture by de-methylation: within 1-3 h of exposure to millimolar concentrations of labeled caffeine, more than 90% of the pool consists of labeled products of metabolism and less than 10% is still caffeine. The methyl groups seem to be transferred and used in the de novo synthesis of thymine,
R, Goth, J E, Cleaver
openaire   +3 more sources

Studies on the uptake of nucleic acid precursors into cells in tissue culture

Biochimica et Biophysica Acta (BBA) - General Subjects, 1968
Abstract Persantin specifically inhibits the uptake of nucleosides and deoxynucleosides into tissue culture cells without interfering significantly with the uptake of free bases, formate and leucine, or with DNA, RNA and protein synthesis. The uptake of most of the nucleosides follows normal Michaelis-Menten kinetics.
Christoph Scholtissek
openaire   +3 more sources

Entamoeba histolytica: Nucleic acid precursors affecting axenic growth

Experimental Parasitology, 1980
Abstract Treatment of Panmede and Trypticase, in water, with activated carbon and subsequently combining the filtered solution with glucose, cysteine, salts, serum and vitamins results in a medium depleted in the nucleic acid precursors required to sustain a high level of growth of axenic Entamoeba histolytica.
R E, Reeves, B, West
openaire   +3 more sources

Uptake of tritiated nucleic acid precursors by Babesia bovis in vitro

International Journal for Parasitology, 1986
Abstract Uptake of tritiated nucleic acid precursors by Babesia bovis in vitro. International Journal for Parasitology 16 : 263–268. The uptake of tritiated nucleic aid precursors in vitro by two Babesia bovis isolates, from Mexico and South Africa, was compared using a semiautomated microdilution method.
P. Conrad
openaire   +3 more sources

On the use of different nucleic acid precursors for the measurement of microbial nucleic acid turnover

open access: yes, 1984
The incorporation of the following nucleic acid precursors into nucleic acids of the microbial community from lake Großer Plöner See was measured, (methyl-3 H)thymidine, (5,6-3 H)uridine, (methyl-3H)thymine, (2-3H)adenine, (5-3H)orotic acid, L-(U-14C)aspartic acid, (U-14C)glycine, D-(l-14C)ribose and 32P phosphate.
Witzel, K., Graf, G.
openaire   +2 more sources

Effects of colchicine on the incorporation of nucleic acid precursors into rat liver ribosenucleic acid

Biochemical Pharmacology, 1964
Abstract Subcutaneous injection of 1.0–1.l mg of colchicine/kg body weight into adult Sprague-Dawley rats 16–18 hr prior to the administration of radioactive nucleic acid precursors led to elevation over control values of the specific activities of the pyrimidines and purines of liver RNA.
H, WEINFELD, A A, SANDBERG
openaire   +3 more sources

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