Results 11 to 20 of about 3,017,680 (323)
Differences in sequences between HBV-relaxed circular DNA and covalently closed circular DNA [PDF]
Emerging Microbes and Infections, 2017 The hepatitis B virus (HBV) genome exists in two forms: circular covalently closed DNA (cccDNA) and relaxed circular DNA (RCDNA). Here, we investigated the presence of differences in the sequences of both forms in paired samples of serum and liver tissue.
Magda Rybicka +5 more
doaj +5 more sources
Denaturation of circular DNA: Supercoil mechanism
Physical Review E, 2011 The denaturation transition which takes place in circular DNA is analyzed by extending the Poland-Scheraga model to include the winding degrees of freedom. We consider the case of a homopolymer whereby the winding number of the double stranded helix, released by a loop denaturation, is absorbed by \emph{supercoils}.
Bar, Amir +2 more
openaire +7 more sources
Circular DNA tumor viruses make circular RNAs [PDF]
Proceedings of the National Academy of Sciences, 2018 Significance Circular RNAs (circRNAs) play critical physiologic functions, but it is not known whether human DNA viruses express circRNAs. We surveyed Epstein−Barr virus (EBV) and Kaposi’s sarcoma herpesvirus (KSHV) tumors and cell lines, and found ...
T. Toptan +8 more
semanticscholar +3 more sources
Deciphering extrachromosomal circular DNA in Arabidopsis
Computational and Structural Biotechnology Journal, 2021 Extrachromosomal circular DNA (eccDNA) is independent of the chromosome and exists in many eukaryotes. However, the nature and origin of eccDNA in plants remains unclear.
Keyi Wang +15 more
doaj +3 more sources
Genome-wide Purification of Extrachromosomal Circular DNA from Eukaryotic Cells. [PDF]
Journal of Visualized Experiments, 2016 Extrachromosomal circular DNAs (eccDNAs) are common genetic elements in Saccharomyces cerevisiae and are reported in other eukaryotes as well. EccDNAs contribute to genetic variation among somatic cells in multicellular organisms and to evolution of ...
Henrik D. Møller +5 more
semanticscholar +4 more sources
Role of circular RNAs in DNA repair
RNA BiologyCircular RNAs (circRNAs) exhibit a wide range of activities that allow them to participate in numerous cellular processes and make them relevant in a variety of diseases.
Francisco Alejandro Lagunas-Rangel
doaj +3 more sources
Dynamics of extrachromosomal circular DNA in rice
Nature CommunicationsThe genome’s dynamic nature, exemplified by elements like extrachromosomal circular DNA (eccDNA), is crucial for biodiversity and adaptation. Yet, the role of eccDNA in plants, particularly rice, remains underexplored.
Jundong Zhuang +10 more
doaj +3 more sources
Circular Dichroism of DNA [PDF]
European Journal of Biochemistry, 1970 The circular dichroism of sixteen DNA samples from fourteen species has been determined. Plots of molar ellipticity against base composition show considerable scatter, which is much too great to be accounted for in terms of reproducibility of materials and measurements.
L. Rowland Hill +2 more
openaire +3 more sources
Nanoconfined Circular DNA [PDF]
Biophysical Journal, 2014 Nanofluidic channels have become a versatile tool to manipulate single DNA molecules. They allow investigation of confined single DNA molecules from a fundamental polymer physics perspective as wel ...
Mohammadreza Alizadehheidari +9 more
openaire +2 more sources
Identification and characterization of extrachromosomal circular DNA in maternal plasma
Proceedings of the National Academy of Sciences of the United States of America, 2020 Significance We observed the presence of extrachromosomal circular DNA (eccDNA) in the plasma of pregnant women. We found that the plasma eccDNA molecules were longer than their linear counterparts. Among such eccDNA molecules, those of fetal origin were
S. Sin +9 more
semanticscholar +1 more source