To isolate peroxisomes from Saccharomyces cerevisiae of a quality sufficient for in vitro import studies, we
optimized the conditions for cell growth and for cell fractionation. Stability of the isolated peroxisomes was
monitored by catalase latency and sedimentability of marker enzymes. - [Read Peroxisomes in Saccharomyces cerevisiae]
The proliferation rate of the yeast, Saccharomyces cerevisiae, may be regarded as an overall indicator of the physiological status of the cell. Therefore, the effect of various toxic substances on different cell functions will be reflected by changes in the rate of proliferation. It is possible to determine the toxicity of a test substance simply by measuring cell density. - [Read Yeast Growth Rate Cytotoxicity Test]
Plasma membranes are isolated from the yeast Saccharomyces cerevisiae. The cell wall is initially digested by helicase, followed by hypoosmotic lysis and homogenization. Membranes are prepared by subsequent differential centrifugation. The activity of the H+-ATPase is then determined by measuring the amount of inorganic phosphate released from ATP. - [Read Yeast Plasma Membrane H+ -ATPASE Toxcity Test Protocol]