transposon

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Related to Retrotransposition: Transposons, long interspersed elements

transposon

 [tranz-po´zon]
a discrete DNA sequence that transposes blocks of genetic material back and forth within a bacterial cell from the chromosome to plasmids or bacteriophage particles, by which the material may be transferred to another cell. Transposons frequently carry genes for resistance to antibiotics.

trans·po·son

(tranz-pō'son),
A segment of DNA (for example, an R-factor gene) that has a repeat of an insertion sequence element at each end that can migrate from one plasmid to another within the same bacterium, to a bacterial chromosome, or to a bacteriophage; the mechanism of transposition seems to be independent of the host's usual recombination mechanism. See: jumping gene, transposable element.
[L. transpono, pp. transpositum, to transfer, + -on]

transposon

(trăns-pō′zŏn)
n.
A segment of DNA that is capable of moving into a new position within the same or another chromosome or plasmid. Also called jumping gene.

trans·po·son

(trans-pō'zon)
A segment of DNA that has a repeat of an insertion sequence element at each end that can migrate from one plasmid to another within the same bacterium, to a bacterial chromosome, or to a bacteriophage.
[L. transpono, pp. transpositum, to transfer, + -on]

transposon

a TRANSPOSABLE GENETIC ELEMENT that often contains genes in addition to those required for transposition, such as antibiotic-resistance genes. There are two main classes in prokaryotes: compound or composite, having copies of an INSERTION SEQUENCE at each end; and complex, having terminal INVERTED REPEAT sequences (generally about 30bp) but no known insertion sequences.
References in periodicals archive ?
In another study which analyzed differential CTCF binding in 6 representative mammals (including mouse and human), it was found that SINE repeats are enriched in CTCF binding to generate new CTCF-binding sites during evolution, and retrotransposition events during evolution produced expansions of CTCF binding at genome in a species-specific manner [59].
Emma Scott and her colleagues in Scott Devine's laboratory recently traced somatic retrotransposition events in a case of colon cancer to 3 inherited, full-length LINE-1 elements.
[sup][11] There are similarities between the mechanisms of endonuclease-independent LINE-1 retrotransposition and telomerase.
Gene duplication is often mediated by a mechanism called retrotransposition, whereby a gene is duplicated at a new location thanks to the action of genetic elements called retrotransposons.
Gamma radiation increases endonucleasedependent L1 retrotransposition in a cultured cellassay.
Theses elements accumulated in these genomes by the process of retrotransposition. Known rodent SINEs such as Bl, B2 and ID elements are abundant in mice and rats, but are either present in low copies or absent within the guinea pig genome.
Baillie et a!., "Somatic Retrotransposition Alters the Genetic Landscape of the Human Brain," Nature 479 (2011): 534-7.
The viroids are probably escaped archaeal group I introns which have retrotransposition and self splicing qualities [19].
This is a member of a group of transposable elements that integrate into the genome by the process of retrotransposition. Recent integrations of Alu elements within the human genome have generated presence/absence variants useful as DNA markers in human population studies as well as in forensic and paternity analyses.
Instead, for retrotransposition, ALU elements require the use of the retrotransposition machinery of LINE-1 (Dewannieux et al.