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Determination of cell viability is important in various microbiological studies. The microscopic method, counting dead cells stained by methylene blue (MB), has often been used for the determination of viability, although it is not efficient for the measurement of a large number of samples. Alternatively, some spectroscopic methods have been proposed to avoid tedious cell counting. One of these proposed...
Mitotic cyclin‐dependent kinase (CDK) is activated by Cdc25 phosphatase through dephosphorylation at the Wee1‐mediated phosphorylation site. In Saccharomyces cerevisiae, regulation of Mih1 (Cdc25 homologue) remains unclear because inactivation/degradation of Swe1 (Wee1 homologue) is the main trigger for G2/M transition. By deleting all mitotic cyclins except Clb2, a strain was created where Mih1 became...
Local anesthetics and antipsychotic phenothiazines cause a rapid shutdown of both actin polarization and translation initiation in yeast cells, like some environmental stresses. These compounds all have an amphiphilic structure, surfactant activity and the ability to lyse yeast cells. To elucidate the structures responsible for the shutdown activity and cell lysis, we investigated a variety of amphiphiles...
Oxygen uptake rates are increased when concentrated ammonium instead of nitrate is used as sole N source. Several explanations for this increased respiration have been suggested, but the underlying mechanisms are still unclear. To investigate possible factors responsible for this respiratory increase, we measured the O2 uptake rate, activity and transcript level of respiratory components, and concentration...
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