Biparametric fluorometry of chlorotetracycline and ethidium bromide in DNA structure.
نویسندگان
چکیده
منابع مشابه
Ethidium bromide as a cooperative effector of a DNA structure.
A salt-induced cooperative conformational transition of a synthetic DNA, poly(dG-dC), is reversed by addition of ethidium bromide. Binding of the dye at high salt concentrations is highly cooperative. Circular dichroism spectra of the complex and the kinetic data support a model for this cooperative binding that is formally equivalent to the "allosteric" one proposed for oligomeric proteins by ...
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The synthesis of mitochondrial DNA (mDNA) in HeLa cells is selectively inhibited by relatively low concentrations of ethidium bromide. After exposure of cells to strongly inhibitory concentrations of the drug, the apparent superhelix density of mDNA is rapidly increased, as judged by its buoyant density in CsCl in the presence of ethidium bromide. Mitochondrial DNA synthesized in the presence o...
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The reactions of the EcoRI restriction endonuclease on the covalently closed DNA of plasmid pMB9 were studied in the presence of ethidium bromide. At the concentrations of ethidium bromide tested, which covered the range over which the DNA is changed from negatively to positively supercoiled, the dye caused no alteration to the rate at which this enzyme cleaved the covalently closed DNA to yiel...
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Nocker and Camper reported that DNA from dead bacterial cells (Escherichia coli O157:H7 and Salmonella enterica serovar Typhimurium) treated with ethidium monoazide (EMA) is lost during the DNA extraction procedure (2). This was concluded from the missing or less intense DNA band on an agarose gel stained with ethidium bromide in comparison to the intensities of bands in untreated samples. Acco...
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The mechanism of the enhancement of the fluorescence of ethidium bromide on binding to double helical RNA and DNA has been investigated. From an examination of the effect of different solvents on the fluorescence lifetime, quenching of fluorescence by proton acceptors, and the substantial lengthening of lifetime observed upon deuteration of the amino protons, regardless of the medium, we conclu...
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ژورنال
عنوان ژورنال: ACTA HISTOCHEMICA ET CYTOCHEMICA
سال: 1984
ISSN: 0044-5991,1347-5800
DOI: 10.1267/ahc.17.37