Results 351 to 360 of about 3,020,470 (372)
Some of the next articles are maybe not open access.
Circular, repetitive DNA in yeast
Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, 1972Abstract The fraction of repetitive DNA and the small circular DNA with nuclear density from Saccharomyces cerevisiae are shown to be identical.
Bak, AL +2 more
openaire +4 more sources
Conformation and circular dichroism of DNA
Biopolymers, 1979AbstractCD spectra of calf thymus, C. perfringens, E. coli, and M. luteus DNA have been measured in the vacuum‐uv region to about 168 nm for the A‐, B‐, and C‐forms. The positive band at about 187 nm and the negative band at about 170 nm found for each type and form of DNA are sensitive to the source of the DNA and the base–base interactions of the ...
W. Curtis Johnson +2 more
openaire +3 more sources
Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1981
Summary Closed duplex (cd) and open circular (oc) forms of DNA of the plasmid Col E1 were studied by means of a.c. and differential pulse polarography (d.p.p.). Adsorption properties of oc DNA (at pH 8) agreed in principle with those of linear DNAs. cd DNA was less firmly adsorbed at the d.m.e. compared with oc DNA.
M. Vojtíšková +3 more
openaire +2 more sources
Summary Closed duplex (cd) and open circular (oc) forms of DNA of the plasmid Col E1 were studied by means of a.c. and differential pulse polarography (d.p.p.). Adsorption properties of oc DNA (at pH 8) agreed in principle with those of linear DNAs. cd DNA was less firmly adsorbed at the d.m.e. compared with oc DNA.
M. Vojtíšková +3 more
openaire +2 more sources
Modifications of Circular DNA by Photoalkylation
Radiation Research, 1985The effects of photoalkylation on superhelical PM2 DNA were examined. The chief product was 8-(2-hydroxy-2-propyl)guanine, formed exclusively in sequences of alternating purines and pyrimidines. Other purine damages included 8-(2-hydroxy-2-propyl)adenine and smaller quantities of two uncharacterized adenine products.
Nahum J. Duker +2 more
openaire +3 more sources
Circular dichroism of superhelical DNA
Biopolymers, 1971AbstractThe circular dichroism (CD) spectra of a number of superhelical DNA's have been measured. The introduction of negative superhelical turns causes an increase in magnitude of the positive band around 280 mμ, while the trough around 250mμ is little affected.
James C. Wang, Marcos F. Maestre
openaire +3 more sources
2016
In this chapter the statistical-mechanical and transport theories of the HW chain developed so far are applied to some interesting problems of circular DNA such as cyclization of linear DNA and analysis of circular DNA topoisomers (topological isomers) or supercoiled forms.
Hiromi Yamakawa, Takenao Yoshizaki
openaire +2 more sources
In this chapter the statistical-mechanical and transport theories of the HW chain developed so far are applied to some interesting problems of circular DNA such as cyclization of linear DNA and analysis of circular DNA topoisomers (topological isomers) or supercoiled forms.
Hiromi Yamakawa, Takenao Yoshizaki
openaire +2 more sources
In Vitro Selection of Circular DNA Aptamers for Biosensing Applications.
Angewandte Chemie, 2019We report on the first effort to select DNA aptamers from a circular DNA library, which resulted in the discovery of two high-affinity circular DNA aptamers that recognize the glutamate dehydrogenase (GDH) from Clostridium difficile, an established ...
Meng Liu +5 more
semanticscholar +1 more source
Hepatology, 2019
Nuclear‐located covalently closed circular DNA (cccDNA) of hepatitis B virus (HBV) is a determining factor for HBV persistence and the key obstacle for a cure of chronic hepatitis B.
Yuanyuan Yang +8 more
semanticscholar +1 more source
Nuclear‐located covalently closed circular DNA (cccDNA) of hepatitis B virus (HBV) is a determining factor for HBV persistence and the key obstacle for a cure of chronic hepatitis B.
Yuanyuan Yang +8 more
semanticscholar +1 more source
Searching circular DNA strands [PDF]
Journal of Physics: Condensed Matter, 2007 We introduce and explore a model of an ensemble of enzymes searching, in parallel, a circular DNA strand for a target site. The enzymes performing the search combine local scanning—conducted by a 1D motion along the strand—and random relocations on the strand—conducted via a confined motion in the medium containing the strand.
Iddo Eliazar +3 more
openaire +1 more source
[19] Circular dichroism spectroscopy of DNA
1992Publisher Summary Circular dichroism (CD) measurements are used to study the conformations of nucleic acids in solution. The reliance on CD spectroscopy to study DNA conformations has stemmed from the sensitivity and ease of CD measurements, the nondestructive nature of such measurements, the fact that conformations can be studied in solution, and ...
Robert L. Ratliff +2 more
openaire +3 more sources