derepression

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derepression

[dē·ri′presh·ən]
(microbiology)
Transfer of microbial cells from an enzyme-repressing medium to a nonrepressing medium.
(cell and molecular biology)
Increased production of a gene product due to interference with the action of a repressor on the operator portion of the operon.
References in periodicals archive ?
Downregulation of miR-30 derepresses the expression of EZH2, an important component of the polycomb repressive complex 2 (PRC2) that regulates chromatin condensation and gene expression.
hidden, is "derepressed and animated before it can be
[14] The Cefoxitin-BA method cannot differentiate between plasmid-mediated AmpC, iAmpC or derepressed AmpC enzymes.
Previously, our laboratory showed fimB expression was derepressed in an ompR mutant UPEC strain in a low pH environment [28] and OmpR was critical for UPEC survival in the murine urinary tract [66].
Starkey et al., "Dominant-negative histone H3 lysine 27 mutant derepresses silenced tumor suppressor genes and reverses the drug-resistant phenotype in cancer cells," Cancer Research, vol.
Prevalence of derepressed ampC mutants and extended-spectrum p-lactamase producers among clinical isolates of Citrobacter freundii, Enterobacter spp., and Serratia marcescens in Korea: dissemination of CTX-M-3, TEM-52, and SHV-12.
The panel included 63 carbapenemase-producing strains: NDM (n = 18), OXA-48-like (n = 19), KPC (n = 6), IMP (n = 5), VIM (n = 4), OXA-23 (n = 3), and one each of OXA-24, OXA-25, OXA27, OXA-58, GES-5, IMI-1, VIM/IMP, OXA-48/NDM; and 37 non -carbapenemase producing isolates that produced other resistant mechanisms such as ESBL, plasmid-mediated AmpC, and derepressed AmpC.
cloacae, Morganella morgannii, Providencia stuartii, and Serratia marcescens likely resulted from the ceftazidime-nonsusceptible isolates of those species producing stably derepressed AmpC [beta]-lactamases.
Qin, "Attenuation of microRNA-22 derepressed PTEN to effectively protect rat cardiomyocytes from hypertrophy," Journal ofCellular Physiology, vol.
Improved productivity of bfructofuranosidase by a derepressed mutant of Aspergillus niger from conventional and non-conventional substrates.