derepressed


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derepressed

The state of a gene that is turned on. Also described as induced. See also REPRESSED.
References in periodicals archive ?
Among the various mutants examined the derepressed NA-12 gave the highest activity (451.
Jones pointed out that ceftaroline alone is active against MRSA and multidrug-resistant pneumococci, but when combined with NXL104, it could also be used against the growing population of Enterobacteriaceae that produce derepressed AmpC beta-lactamase.
However, in all these amp C producers, we were not able to distinguish between the chromosomal derepressed and plasmid mediated enzymes as this requires genotypic confirmatory tests.
Cefepime in vitro activity against derepressed extended-spectrum [beta]-lactamase (ESBL)-producing and non- ESBL-producing Enterobacter cloacae by a disc diffusion method.
The pyrimidine pathway is repressed in the presence of uracil and derepressed in its absence.
Isolation of a Kluyveromyces fragilis derepressed mutant hyperproducer of inulinase for ethanol production from Jerusalem artichoke.
31) used microarrays to determine the operons derepressed by both Fur mutations and iron starvation, suggesting the presence of various iron uptake pathways.
2) These differences suggest that MR-PA probably acquired a new resistance mechanism or derepressed one during the study.
Prevalence of derepressed AmpC mutants and extended-spectrum b-lactamase producers among clinical isolates of Citrobacter freundii, Enterobacter spp.
17,18) In this manner, carbapenems have become the drug of choice for treatment of serious ESBL and derepressed AmpC infections.
reduce MICs for ceftazidime against class C hyperproducing, TEM, and SHV derived ESBL producing strains however these compounds failed to enhance activity of ceftazidime against derepressed Amp C producing P.