[DNA content in Escherichia coli mutants resistant to rifampicin and nalidixic acid].
DNA content was studied in Escherichia coli strains resistant to rifampicin and nalidixic acid. When the strain resistant to the acid was grown in the M-9 medium with glucose, it was found to contain 14.6 X 10(-15) to 17.8 X 10(-15) g of DNA per cell, the rifampicin-resistant strain contained 10.2 X 10(-15) to 34.8 X 10(-15) g of DNA per cell, and the parent sensitive strain contained 7.5 X 10(-15) to 9,2 X 10(-15) g of DNA per cell under the identical conditions. The morphology and certain physiological characteristics of the mutants were also modified.
D003470:Culture Media / Q000378:metabolism; D004269:DNA, Bacterial / Q000032:analysis*; D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000187:drug effects / Q000378:metabolism*; D009154:Mutation; D009268:Nalidixic Acid / Q000037:antagonists & inhibitors*; D012293:Rifampin / Q000037:antagonists & inhibitors*
D003470:Culture Media; D004269:DNA, Bacterial; D009268:Nalidixic Acid; D012293:Rifampin
Soderzhanie DNK u mutantov Escherichia coli, rezistentnykh k rifampitsinu i nalidiksovoĭ kislote.