Unchanged thymidine triphosphate pools and thymidine metabolism in two lines of thymidine kinase 2-mutated fibroblasts
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چکیده
منابع مشابه
Feedback Inhibition of Thymidine Kinase by Thymidine Triphosphate.
That the regulation of cell division and deoxyribonucleic acid synthesis is subject to some kind of chemical control in higher organisms is widely accepted (2-5). Davidson (2) has suggested that deoxyribonucleic acid synthesis takes place at critical concentrations of the deoxyribonucleoside triphosphates and that these compounds are components of a homeostatic mechanism. There are now at least...
متن کاملOrigins of mitochondrial thymidine triphosphate: dynamic relations to cytosolic pools.
Nuclear and mitochondrial (mt) DNA replication occur within two physically separated compartments and on different time scales. Both require a balanced supply of dNTPs. During S phase, dNTPs for nuclear DNA are synthesized de novo from ribonucleotides and by salvage of thymidine in the cytosol. Mitochondria contain specific kinases for salvage of deoxyribonucleosides that may provide a compartm...
متن کاملThymidine Triphosphate Synthesis in Tetrahymena
The amount of thymidine-H(3) converted to thymidine-H(3) monophosphate in 30 min formed the basis for assays of thymidine kinase in cell extracts from Tetrahymena pyriformis. The optimal concentration of adenosine triphosphate is lower than that required by other cell types. Thymidine triphosphate does not exercise any feedback control of the enzyme. Other deoxyprimidine nucleotides were tested...
متن کاملThymidine uptake, thymidine incorporation, and thymidine kinase activity in marine bacterium isolates.
One assumption made in bacterial production estimates from [3H]thymidine incorporation is that all heterotrophic bacteria can incorporate exogenous thymidine into DNA. Heterotrophic marine bacterium isolates from Tampa Bay, Fla., Chesapeake Bay, Md., and a coral surface microlayer were examined for thymidine uptake (transport), thymidine incorporation, the presence of thymidine kinase genes, an...
متن کاملFeedback Inhibition of Thymidine Kinase by Thymidine T&phosphate*
That the regulation of cell division and deoxyribonucleic acid synthesis is subject to some kind of chemical control in higher organisms is widely accepted (2-5). Davidson (2) has suggested that deoxyribonucleic acid synthesis takes place at critical concentrations of the deoxyribonucleoside triphosphates and that these compounds are components of a homeostatic mechanism. There are now at least...
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ژورنال
عنوان ژورنال: FEBS Journal
سال: 2009
ISSN: 1742-464X
DOI: 10.1111/j.1742-4658.2008.06853.x