Thymidine kinase activity in rye chloroplasts
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چکیده
منابع مشابه
Thymidine kinase activity in Dictyostelium discoideum.
Thymidine kinase activity is present in soluble and mitochondrial fraction of axenically grown cells of Dictyostelium discoideum. The overall activity does not change significantly during development.
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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 کاملStreptococcus gordonii strains resistant to fluorodeoxyuridine contain mutations in the thymidine kinase gene and are deficient in thymidine kinase activity.
Mutants of Streptococcus gordonii resistant to 5-fluorodeoxyuridine (FUdR(r)) were isolated. Each strain contained a point mutation resulting in the premature termination of the thymidine kinase (TK) open reading frame (tdk). In vitro translation of the mutant tdk coding regions resulted in synthesis of truncated TK polypeptides deficient in TK activity.
متن کاملPlasma thymidine kinase activity in dogs with lymphoma and leukemia.
Plasma thymidine kinase (TK) activity was evaluated as a plasma marker for canine lymphoma and leukemia. A tentative "cut-off" value was set at 6.0 U/l as the upper level of plasma TK based on the mean + 2SD of plasma TK activity in 13 clinically healthy dogs. The levels of plasma TK activity in all of the 20 dogs with lymphoma and leukemia were higher than the cut-off value, whereas those in d...
متن کاملPersistence of thymidine kinase activity in mitochondria of a thymidine kinase-deficient derivative of mouse L cells.
The cell line LM(TK(-)) Cl 1D, a derivative of mouse L fibroblasts deficient in thymidine kinase (EC 2.7.1.21) that shows very little thymidine kinase activity in extracts of whole cells as compared to the parental line, and that does not incorporate thymidine or 5-bromodeoxyuridine into nuclear DNA, has maintained the capacity to incorporate these precursors into mitochondrial DNA at a substan...
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ژورنال
عنوان ژورنال: FEBS Letters
سال: 1975
ISSN: 0014-5793
DOI: 10.1016/0014-5793(75)80300-0