نتایج جستجو برای: rpoc
تعداد نتایج: 95 فیلتر نتایج به سال:
In the gram-negative model organism Escherichia coli, the effector molecule of the stringent response, (p)ppGpp, is synthesized by two different enzymes, RelA and SpoT, whereas in the gram-positive model organism Bacillus subtilis only one enzyme named Rel is responsible for this activity. Rel and SpoT also possess (p)ppGpp hydrolase activity. BLAST searches were used to identify orthologous ge...
The Asarum L. genus includes 128 species with a lot of medicinal effects and has been used extensively in the folk prescriptions for treatment several diseases such as bronchitis, asthma, rheumatism, hepatitis. In world, many researches showed that have kinds essential oils myristicin, methyl eugenol, myrcene, asafrol, borneol, safrol or α-pinene substances secquiterpenes, sterols, naringenin g...
Introducción. Las especies patógenas del género Leptospira ocasionan la leptospirosis en seres humanos y animales susceptibles. Los roedores son los reservorios naturales de las bacterias; otros silvestres hospederos accidentales. musarañas han sido involucradas el ciclo transmisión este patógeno varios países; sin embargo, México, no existe información al respecto. Objetivo. Describir infecció...
As a first national surveillance of Acinetobacter in Cuba, a total of 500 Acinetobacter spp. isolates recovered from 30 hospitals between 2010 and 2012 were studied. Acinetobacter baumannii-calcoaceticus complex accounted for 96.4% of all the Acinetobacter isolates, while other species were detected at low frequency (A. junii 1.6%, A. lwoffii 1%, A. haemolyticus 0.8%, A. soli 0.2%). Resistance ...
Regulation of tryptophan operon expression by attenuation in cell-free extracts of Escherichia coli.
Expression of the tryptophan (trp) operon of Escherichia coli was shown to be regulated by attenuation in an in vitro DNA-dependent protein-synthesizing system. In extracts prepared from a temperature-sensitive tryptophanyl-tRNA synthetase mutant, plasmid-directed trpE enzyme synthesis was inhibited 2- to 3-fold by addition of purified wild type tryptophanyl-tRNA synthetase. When the extract us...
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