derepression

derepression
A homeostatic mechanism for regulating enzyme production in an inducible enzyme system : an inducer, usually a substrate of a specific enzyme pathway, by combining with an active repressor (produced by a regulator gene) deactivates it; the release of the previously repressed operator is followed by enzyme production.

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de·re·pres·sion (de″re-preshґən) removal of repression of a gene or operon, leading to or enhancing gene expression. In prokaryotes, the mechanism involves inactivation of a repressor, as by inhibition of a corepressor or by the action of an inducer. In eukaryotes, the process appears to involve combinations of regulatory proteins and specific effectors.

Medical dictionary. 2011.

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  • derepression — derepression. См. дерепрессия. (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.

  • Derepression — In genetics and biochemistry, a repressor gene inhibits the activity of an operator gene. By inactivating the repressor, the operator gene becomes active again. This effect is called derepression. Derepression of ALA synthase One example is the… …   Wikipedia

  • derepression — noun see derepress …   New Collegiate Dictionary

  • derepression — Anything that stops the repression of a gene thereby allowing expression to occur …   Dictionary of molecular biology

  • derepression — See derepress. * * * …   Universalium

  • derepression — noun The inactivation of a repressor gene …   Wiktionary

  • derepression — de·repression …   English syllables

  • derepression — The process of turning on the expression of a gene or set of genes whose expression has been repressed (turned off), usually by the displacement of a repressor from a promoter, since, when attached to the DNA, the repressor prevents transcription …   Glossary of Biotechnology

  • derepression — noun see derepress * * * derepressˈion noun • • • Main Entry: ↑derepress …   Useful english dictionary

  • дерепрессия — derepression дерепрессия. Индукция транскрипции гена в результате подавления функций репрессора (нарушения его связи с операторной зоной оперона <operon> под действием индуктора, мутаций и т.п.). (Источник: «Англо русский толковый словарь… …   Молекулярная биология и генетика. Толковый словарь.

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