Chloramphenicol-induced loss of mitochondrial DNA polymerase activity in HeLa cells.


HeLa cells exposed to chloramphenicol for approximately one cell ...
HeLa cells exposed to chloramphenicol for approximately one cell generation were found to contain a mitochondria-associated DNA polymerase with a significantly lower specific activity than that of control cells. This observation was not due to the presence of inhibitors in mitochondrial DNA polymerase preparations of chloramphenicol-treated cell cultures. In addition, there was no accumulation of a typical mitochondrial DNA polymerase in the post-mitochondrial supernatant of drug-treated cells.




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