This condition selected for the screen at a stringent concentration of 750 mM NaCl, subjected the yeast transformants to ionic as well as osmotic stress, and imposed stringent conditions for salt and drought stresses.
The plots may be used directly for staged system design and lead to the following conclusions: three tanks in series is generally best, high influent substrate concentrations and stringent discharge requirements increase the benefit of staging, and optimal tank sizing is significantly better than using equal sized tanks.
After hybridization, slides were subjected to ribonuclease A (20 μg/ml) treatment, followed by stringent washes in decreasing concentrations of saline sodium citrate.
For all of the aptazymes except Th3P6, the ligand-induced splicing activity was greater in a standard assay at the more stringent (3 mM) magnesium concentration (Table 1).
A minienvironment is normally used to maintain a level of stringent cleanliness through controlling particle concentrations within a tightened volume of clean spaces.
There was no stringent correlation of actual PCDD/PCDF concentrations with the occurrence of infections or with one of the immune parameters.
In accordance with the increasingly stringent environmental regulations on sulfur concentration in transportation fuels and the demand for diesel fuel with low sulfur content, removal of sulfur-containing compounds is an important issue for the petroleum refining industry (Mei et al. 2003).
However, under these stringent experimental conditions (high salt concentration), while we were able to demonstrate Ozz binding with its direct interacting partners, MyHCemb and Elo C, we could not co-immunoprecipitate the remaining components of the Ozz-E3 complex (not shown).
Further impacts of the high (p ppGpp concentration during the stringent response are the inhibition of the genes for tRNAs, rRNAs and ribosomal proteins [ 186, 187], as well as of the initiation factor IF2 [ 188].
This strategy was based on the premise that after 220 generations (Table 2) under stringent selective conditions (high inhibitor concentration, xylose as primary carbon source), the culture would be predominantly comprised of strains with improved performance and hence, a greater probability of isolating a more resistant strain.
