Protocol that isolates intact, high molecular weight DNA from yeast cells for subcloning and rare cutting restriction enzyme analysis. Using this protocol one can expect a yield of 100-200 µg of DNA per prep. - [Read High Molecular Weight Yeast Liquid DNA Preparation Protocol]
High-throughput and sensitive assay to measure yeast cell growth: a bench protocol for testing genotoxic agents. Method is highly sensitive, provides quantifiable data and offers high-throughput screening capability. Starting with the treatment of cells with different doses of damaging agents, pre-prepared growing media containing 96-well plates are inoculated and cell population is automatically monitored every 10 min for 48 hours. - [Read High Throughput and Sensitive Assay Measure Yeast Cell Growth Protocol]
To identify the YAC subclones containing both a human insert and a portion of either the left or right arm of the pYAC4 vector. Identification of these clones is necessary in order to do YAC chromosome walking, and is also useful in the determination of whether a particular YAC clone has a contiguous human insert or whether a co-cloning event has occurred. Vector arm sequences are identified using pBR322 fragments from a BamHI-PvuII double digest. - [Read Identification of End Clones in YAC Subclone Libraries Protocol]
For immunoblotting experiments, it is often important to compare the total amount of an antigen from many different sources or to learn if a particular source has the antigen under study. In the approach described here, tissue cultures, bacteria, yeast cells, tissues, and other sources of antigens are disrupted directly in an electrophoresis sample . - [Read Immunoblotting: Preparing Cell Lysates Protocol]
Protocol for in vitro endoplasmic reticulum to golgi transport reaction in Yeast. Includes: Preparation of Membranes; One-Stage Reaction; Two-Stage Reaction using Normal Amount of Membranes; Two-Stage Reaction using Low Concentration of Membranes. - [Read In Vitro Endoplasmic Reticulum to Golgi Transport Reaction in Yeast Protocol]
Protocol for in vitro transcription with yeast nuclear extract. Includes recipes for: 5x Acetate transcription buffer; Creatine phospho kinase; Phospho creatine; Stop mix; HA + 0.1 M potassium acetate; 5x glutamate transcription buffer (5 ml). Includes also protocol for Primer Extension Assay. - [Read In Vitro Transcription With Yeast Nuclear Extract]
Includes: Isolation of Arabidopsis LEU2 cDNAs by complementation of the yeast leu2 mutation; Recovery of plasmid DNA from yeast cells; Analysis of Arabidopsis cDNAs that complement a yeast leu2 mutation; Preparation of library DNA from the Lacroute cDNA library; Preparation of Yeast Media. - [Read Isolation of Arabidopsis cDNAs by Complementation in Yeast]
Method of choice when large amounts of mammalian DNA are required, for example, for Southern blotting (Rapid Isolation of Mammalian DNA, Rapid Isolation of Yeast DNA, Southern Blotting: Capillary Transfer of DNA to Membranes) or for construction of genomic libraries in bacteriophage {lambda} vectors. Approximately 200 µg of mammalian DNA, 100-150 kb in length, is obtained from 5 x 107 cultured aneuploid mammalian cells (e.g., HeLa cells). - [Read Isolation of High-molecular-weight DNA from Mammalian Cells Using Proteinase K and Phenol 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.