Protocol for the preparation of electrolyte gradient gels. Electrolyte gradients are formed when buffers of different concentrations are used in the upper (low electrolyte concentration) and lower (high electrolyte concentration) chambers of the electrophoresis device. - [Read Preparation of Electrolyte Gradient Gels Protocol]
Endothelial cells, which line blood vessels, can be prepared from a variety of tissues. They are frequently prepared from the umbilical vein, which is relatively easy to obtain. The procedure is clearly described and provides a large population of highly purified endothelial cells. There are also methods for obtaining endothelial cells from other tissues such as fat, skin, and mucosa. These methods require special care and generate smaller populations of cells. - [Read Preparation of Endothelial Cells Protocol]
Method is used chiefly to genotype transgenic and knockout mice. Each 6-10-mm snippet of mouse tail yields 50-100 µg of DNA that can be used in dot or slot blotting to detect a transgene of interest, in Southern hybridization to detect DNA fragments that are <20 kb in size, and as a template in PCRs. - [Read Preparation of Genomic DNA from Mouse Tails and Other Small Samples Protocol]
Simple protocol is used to extract DNA from small numbers of cultured cells and from fragments of soft or bony tissues. The method is used chiefly to genotype transgenic and knockout mice. Each 6-10-mm snippet of mouse tail yields 50-100 µg of DNA that can be used in dot or slot blotting to detect a transgene of interest, in Southern hybridization to detect DNA fragments that are <20 kb in size, and as a template in PCRs. - [Read Preparation of Genomic DNA from Mouse Tails and Other Small Samples Protocol]
Protocol for preparation of KC nuclear extract for in vitro splicing. Protocol makes 3.4 ml of extract for every 4 liter of cells (depending on initial cell concentration). Protocol includes: Procedure, Solutions, BioReagents and Chemicals and protocol hints. - [Read Preparation of KC Nuclear Extract for In Vitro Splicing]
In this protocol, a bacterial lysogen is constructed from a recombinant bacteriophage {lambda} encoding a fusion protein of interest. The resulting lysogenic colonies are induced to synthesize the fusion protein, which is then isolated in preparation for functional and biochemical analyses. - [Read Preparation of Lysates Containing Fusion Proteins Encoded by Bacteriophage {lambda} Lysogens]
MEF feeders are prepared weekly to provide a substrate for undifferentiated embryonic stem (ES) cells. Primary MEF cells are thawed, established in culture, treated with mitomycin C to halt their proliferation so they cannot overgrow the ES cultures, and then replated onto dishes convenient for ES cell culture. This protocol can also be used to prepare feeder cells from STO fibroblast cell lines. - [Read Preparation of Mouse Embryonic Fibroblast (MEF) Feeder Plates Protocol]
This Microarray Protocol Preparation of Fluorescent DNA Probes from Human mRNA protocol describes the production of probes labeled with the fluorescent dyes, Cy3 and Cy5, following the synthesis of cDNA from human mRNA and the hybridization of the probes to DNA microarrays.
In Vitro Translated Xenopus Mos Kinase Assay Protocol. In response to progesterone, immature Xenopus oocytes mature to eggs that can be fertilized. The Mos protein kinase is essential for oocyte maturation, most likely due to its ability to activate the MAP kinase cascade. This MAP kinase cascade eventually leads to the activation of Cdc2/cyclin B and entry into M phase. In this protocol, tagged Mos kinase is translated in vitro, immunopurified, and used in a kinase assay.
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.