Protocol for yeast colony PCR. This method for yeast colony PCR is used to test for the presence of target sequences in cells. - [Read Yeast Colony PCR Protocol]
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]
Yeast IF without Dehydration. Botstein Lab. Protocol is a modified version of the protocol from Mark Rose in the CSH Yeast Genetics Course Manual. - [Read Yeast IF without Dehydration]
This protocol describes a method based on that of Pringle for immunofluorescent staining of yeast, as would be done in gene replacement experiments. - [Read Yeast Immunofluoresence Protocol]
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]
Accumulation of lipophilic substances, many of which may be environmental chemicals, affects the membrane lipid order and consequently affects the functions of these proteins. Since, the function of important cellular proteins, such as the H+-ATPase strongly depends upon the integrity of the lipid bilayer, the activity of the H+-ATPase may be used as a sensitive indicator of the effect that a chemical may have on the viability of the cell. - [Read Yeast Plasma Membrane H+ -ATPASE Toxicity Test]
Protocol is a simple, reliable method for the preparation of yeast protein extracts for analysis by polyacrylamide gel electrophoresis (PAGE) and Western blotting. - [Read Yeast Protein Extracts Protocol]
A Single Stranded Plasmid DNA Isolation Protocol describing the production and isolation of single-stranded DNA (ssDNA) using bacteriophagemid-containing bacteria and helper phage. Infection of the host cells with helper phage allows for packaging of ssDNA into bacteriophage. The ssDNA can then be isolated from phage particles.
DNA microarrays are an ordered arrangement of DNA molecules complementary to genes of interest that are "spotted" by robotic equipment onto a glass slide substrate. The expression of genes in cells can be monitored with microarrays by preparing cDNA from the mRNA of cells of interest and measuring the hybridization to the microarray. This protocol describes the labeling of genomic DNA for use as a probe for hybridization to the cDNA spotted on the array.
A protocol for the selection of Phage Antibodies using Immobilized Antigen. This method describes the selection of antibodies from bacteriophage antibody libraries that recognize a specific antigen. The phage display library of antibody-displaying phage particles is exposed to antigen attached to a solid substrate (Nunc Immuno™ tubes). The phage particles with affinity for antigen bind to the immobilized antigen and are selected from the library of phage expressing antibodies.
This protocol describes the electroporation of the BMH 81-17 mut S strain that is recommended for tranformation of the site directed mutagenesis of dsDNA (See Protocol on Site-Directed Mutagenesis on Double Stranded DNA). BMH 81-17 mut S are a mismatch repair defective (mut S) Escherichia coli strain. The probability that the two mutations will cosegregate during the first round of DNA replication is increased in this strain.