TERMIUM Plus®

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PLECTONEMIC [1 record]

Record 1 2010-09-28

English

Subject field(s)
  • Molecular Biology
DEF

Descriptive of the interaction of two DNA strands, either single- or double-stranded, in which an oligonucleotide of one strand is twisted into a plait of helices, one around the other, and requires the nicking of one strand to form or dissociate such an interaction.

OBS

When one of the DNA strands is circular, the structure, a ring pierced by the linear strand, is called a hemicatenane. Plectonemic is contrasted with paranemic, descriptive of an interaction between DNA strands that is formed and dissociated without the breaking of covalent bonds and therefore constitutes a weaker interaction than a plectonemic joint.

French

Domaine(s)
  • Biologie moléculaire
CONT

Lorsqu'un surenroulement non contraint existe sur une longueur d'ADN d'au moins quelques kilobases, comme c'est le cas chez les bactéries, on a vu que le tracé de la double hélice adopte une forme plectonémique [...]

Spanish

Campo(s) temático(s)
  • Biología molecular
DEF

[Dícese] del proceso en el que se desarrollan las dos hebras de ADN, en la que gira una respecto a la otra.

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