circular DNA - meaning and definition. What is circular DNA
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  3. circular DNA

What (who) is circular DNA - definition

COVALENTLY CLOSED DNA MOLECULES FOUND IN BACTERIA, MANY VIRUSES, MITOCHONDRIA, PLASTIDS, AND PLASMIDS
Circular dna; Circular DNA (disambiguation)

Extrachromosomal circular DNA         
EccDNA; Extrachromosomal Circular DNA; Draft:EcDNA
Extrachromosomal circular DNA (eccDNA) is a type of double-stranded circular DNA structure that was first discovered in 1964 by Alix Bassel and Yasuo Hotta. In contrast to previously identified circular DNA structures (e.
https://en.wikipedia.org/wiki/Extrachromosomal_circular_DNA
DNA supercoil         
  • Supercoiled structure of circular DNA molecules with low writhe. The helical nature of the DNA duplex is omitted for clarity.
  • Figure showing the various conformational changes which are observed in circular DNA at different pH. At a pH of about 12 (alkaline), there is a dip in the sedimentation coefficient, followed by a relentless increase up to a pH of about 13, at which pH the structure converts into the mysterious "Form IV".
  • Stochastic, prokaryotic model of the dynamics of RNA production and transcription locking at the promoter region, due to PSB.
  • Drawing showing the difference between a circular DNA chromosome (a plasmid) with a secondary helical twist only, and one containing an additional tertiary superhelical twist superimposed on the secondary helical winding.
  • Supercoiled structure of linear DNA molecules with constrained ends. The helical nature of the DNA duplex is omitted for clarity.
  • Illustration of how cold shock affects the supercoiling state of the DNA, by blocking the activity of Gyrase. The signs ‘ − ’ and ‘+’ represent negative and positive supercoiling, respectively. Created with BioRender.com. Also shown is a stochastic model of gene expression during cold shock as a function of the global DNA supercoiling state. The transition from ON to OFF of the promoter (P) causes the locking of transcription (i.e. RNA production). When ON, the promoter can produce RNA, from which proteins can be produced. RNA and proteins are always subject to degradation or dilution due to cell division.
COMPRESSED DNA LOOP SUPERCOILED BY PROKARYOTES TO FIT WITHIN A SMALL SPACE
Supercoil; Supercoiling; Dna, circular; Supercoiling of DNA; Positive supercoiling; Twist (DNA); Writhe (DNA); Supercoiled; Superhelical DNA energetics; Surface wrapping of DNA; DNA supercoiling; Circular genome; Supercoiled DNA; Superhelical DNA; Supertwisted DNA; Plectonemic supercoil; Linking number of DNA; Negative supercoiling; Superhelical dna
DNA supercoiling refers to the amount of twist in a particular DNA strand, which determines the amount of strain on it. A given strand may be "positively supercoiled" or "negatively supercoiled" (more or less tightly wound).
https://en.wikipedia.org/wiki/DNA_supercoil
Sonvilier Circular         
1871 ANTI-AUTHORITARIAN TREATISE
Sonvilier circular; Sonvillier Circular
The Sonvilier Circular is a 1871 anti-authoritarian treatise by the Jura Federation, a breakaway faction of the First International. Written during their Sonvilier congress, it claimed that hierarchical politics could not produce social revolution, and that authoritarian organization would never produce an egalitarian society.
https://en.wikipedia.org/wiki/Sonvilier_Circular

Wikipedia

Circular DNA

Circular DNA is DNA that forms a closed loop and has no ends. Examples include:

  • Plasmids, mobile genetic elements
  • cccDNA, formed by some viruses inside cell nuclei
  • Circular bacterial chromosomes
  • Mitochondrial DNA (mtDNA)
  • Chloroplast DNA (cpDNA), and that of other plastids
  • Extrachromosomal circular DNA (eccDNA)
https://en.wikipedia.org/wiki/Circular DNA
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