Results 21 to 30 of about 208,265 (305)

In vitro amplification of whole large plasmids via transposon-mediated oriC insertion

open access: yesBioTechniques, 2021
DNA amplification is a fundamental technique in molecular biology. The replication cycle reaction is a new method for amplification of large circular DNA having oriC sequences, which is a replication initiation site of the Escherichia coli chromosome. We
Seia Nara, Masayuki Su'etsugu
doaj   +1 more source

Cyclocytidine hydrochloride inhibits the synthesis of relaxed circular DNA of hepatitis B virus [PDF]

open access: yesPeerJ, 2022
Background Cyclocytidine hydrochloride (HCl) has been reported to inhibit DNA synthesis by affecting DNA polymerase. Here, we tested the antiviral effect of cyclocytidine on hepatitis B virus (HBV) DNA synthesis, which is reliant on DNA polymerase ...
Xue Wang   +7 more
doaj   +2 more sources

Serious overestimation in quantitative PCR by circular (supercoiled) plasmid standard: microalgal pcna as the model gene. [PDF]

open access: yesPLoS ONE, 2010
Quantitative real-time PCR (qPCR) has become a gold standard for the quantification of nucleic acids and microorganism abundances, in which plasmid DNA carrying the target genes are most commonly used as the standard.
Yubo Hou   +3 more
doaj   +1 more source

Extrachromosomal circular DNA: a new potential role in cancer progression

open access: yesJournal of Translational Medicine, 2021
Extrachromosomal circular DNA (eccDNA) is considered a circular DNA molecule that exists widely in nature and is independent of conventional chromosomes. eccDNA can be divided into small polydispersed circular DNA (spcDNA), telomeric circles (t-circles),
Tianyi Wang   +3 more
doaj   +1 more source

TeCD: The eccDNA Collection Database for extrachromosomal circular DNA

open access: yesBMC Genomics, 2023
Background Extrachromosomal circular DNA (eccDNA) is a kind of DNA that widely exists in eukaryotic cells. Studies in recent years have shown that eccDNA is often enriched during tumors and aging, and participates in the development of cell physiological
Jing Guo   +4 more
doaj   +1 more source

Current understanding of extrachromosomal circular DNA in cancer pathogenesis and therapeutic resistance

open access: yesJournal of Hematology & Oncology, 2020
Extrachromosomal circular DNA was recently found to be particularly abundant in multiple human cancer cells, although its frequency varies among different tumor types.
Yuanliang Yan   +7 more
doaj   +1 more source

Hepatitis B virus cccDNA is formed through distinct repair processes of each strand

open access: yesNature Communications, 2021
HBV covalently closed circular DNA (cccDNA) enables and persists in chronic infection, but the molecular mechanism of its formation is unclear. Here, Wei and Ploss elucidate the detailed kinetics and biochemical steps by which the relaxed circular DNA is
Lei Wei, Alexander Ploss
doaj   +1 more source

Deciphering extrachromosomal circular DNA in Arabidopsis

open access: yesComputational 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   +1 more source

Circular Dichroism of DNA [PDF]

open access: yesEuropean 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.
W B, Gratzer, L R, Hill, R J, Owen
openaire   +2 more sources

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