episome

episome
An extrachromosomal element (plasmid) that may either integrate into the bacterial chromosome of the host or replicate and function stably when physically separated from the chromosome. [epi- + G. soma, body (chromosome)]
- resistance-transferring episomes SYN: resistance plasmids, under plasmid.

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epi·some 'ep-ə-.sōm, -.zōm n a genetic determinant (as the DNA of some bacteriophages) that can replicate either autonomously in bacterial cytoplasm or as an integral part of their chromosomes compare PLASMID
epi·som·al .ep-ə-'sō-məl, -'zō- adj
epi·som·al·ly -mə-lē adv

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ep·i·some (epґĭ-sōm) in bacterial genetics, any accessory extrachromosomal replicating genetic element that can exist either autonomously or integrated with the chromosome, e.g., the F factor, colicinogens, and (drug) resistance transfer factor. See also plasmid.

Medical dictionary. 2011.

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Look at other dictionaries:

  • Episome — Épisome Un épisome est une molécule d ADN circulaire, extrachromosomique, qui peut se répliquer de manière autonome, à l instar d un plasmide. Cependant les épisomes possèdent certains gènes supplémentaires codant la synthèse d enzymes de… …   Wikipédia en Français

  • épisome — [ epizom ] n. m. • 1958; du gr. epi « sur » et sôma « corps » ♦ Biol. Petit élément génétique ou unité d A. D. N., non intégré au chromosome, et qui peut être transféré à une autre cellule. épisome n. m. MICROB Morceau d A.D.N. intracellulaire,… …   Encyclopédie Universelle

  • episome — episome. См. эписома. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • episome — [ep′ə sōm΄] n. [ EPI + SOME3] a small genetic element or unit of DNA that is not essential to the life of the cell: it can be lost or transferred, and it can replicate independently …   English World dictionary

  • episome — episomal, adj. episomally, adv. /ep euh sohm /, n. Genetics. bacterial DNA that is extrachromosomal and that may replicate autonomously as a plasmid or become incorporated into the chromosome and replicate with it. [1930 35; EPI + SOME3] * * *… …   Universalium

  • Épisome — Un épisome est une molécule d ADN circulaire, extrachromosomique, qui peut se répliquer de manière autonome, à l instar d un plasmide. Cependant les épisomes possèdent certains gènes supplémentaires codant la synthèse d enzymes de restriction qui …   Wikipédia en Français

  • episome — ep•i•some [[t]ˈɛp əˌsoʊm[/t]] n. gen a strand of DNA that is extrachromosomal, as a bacterial plasmid • Etymology: < F épisome (1958); see epi , some III ep i•so′mal, adj. ep i•so′mal•ly, adv …   From formal English to slang

  • episome — episoma statusas T sritis augalininkystė apibrėžtis Plazmidė, galinti integruotis į bakterijų DNR arba egzistuoti jose autonomiškai. atitikmenys: angl. episome rus. эписома …   Žemės ūkio augalų selekcijos ir sėklininkystės terminų žodynas

  • episome — A genetic extrachromosomal element (e.g. the F factor in Escherichia coli) which replicates within a cell independently of the chromosome and is able to integrate into the host chromosome. The step of integration may be governed by a variety of… …   Glossary of Biotechnology

  • episome — noun Date: circa 1931 a genetic determinant (as the DNA of some bacteriophages) that can replicate autonomously in bacterial cytoplasm or as an integral part of the chromosomes • episomal adjective • episomally adverb …   New Collegiate Dictionary

  • episome — (ep ī sōm) A plasmid that can exist either independently of the host cell s chromosome or be integrated into it …   Dictionary of microbiology

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