Alkaline agarose gels are used chiefly to measure the size of first and second strands of cDNA (Construction of cDNA Libraries Stage 1: Synthesis of First-strand cDNA Catalyzed by Reverse Transcriptase) and to analyze the size of the DNA strand after digestion of DNA-RNA hybrids with nucleases such as S1. - [Read Alkaline Agarose Gel Electrophoresis Protocol]
An excellent guide on the analysis of proteins on SDS-PAGE gels, through staining with coomassie blue dye and western blot analysis. Analysis of Protein Gels (SDS-PAGE). David R. Caprette, Rice University. - [Read Analysis of Protein Gels (SDS-PAGE)]
Protocol applies EFs to cells in vitro but has been modified and to use electrotactic chambers to accommodate cells growing in planar culture or in three-dimensional (3D) gels, en bloc tissue cultures in 3D and possible small embryos, such as that from frog and zebra fish. The EF is applied to the cells or tissues cultured in a customer designed electrotactic chamber via agar salt bridges, Steinberg’s solution and Ag/AgCl electrodes. - [Read Application of Direct Current Electric Fields to Cells and Tissues in vitro]
Autoradiography Protocols. Exposing gels and plates containing radioactive samples to X-ray film. Detection of 3H. Detection of 35S and 14C. Detection of 32P and 125I. Bart's Cookbook. - [Read Autoradiography Protocols]
The most convenient and commonly used method to visualize DNA in agarose gels is staining with the fluorescent dye ethidium bromide. Ethidium bromide can be used to detect both singleand double-stranded nucleic acids (both DNA and RNA). However, the affinity of the dye for single-stranded nucleic acid is relatively low and the fluorescent yield is comparatively poor. - [Read Detection of DNA in Agarose Gels Protocol]
Protocol for direct retrieval of DNA fragments from pulsed-field gels. A gel slice containing a fragment of DNA resolved by pulsed-field gel electrophoresis is treated with agarase. The released DNA can be used as a substrate for ligation or restriction without further purification. - [Read Direct Retrieval of DNA Fragments from Pulsed-field Gels Protocol]
DNA Extraction from Agarose Gels Protocol. The page includes cutting out the DNA band from the gel, and describes three methods including 1) Spin-columns (Nucleic acid purification columns), 2) using Dialysis tubing (semi-permeable membrane, Visking tubing), and the 3) Paper strip method.Matt Lewis, Department of Pathology, University of Liverpool. - [Read DNA Extraction from Agarose Gels Protocol]
ENZYME-ASSISTED IMMUNOELECTROBLOTTING (IEB OR WESTERN BLOTTING. E.P. Rybicki and Maud Purves.
Department of Microbiology. Copper Staining of Gels, Indirect enzyme immunoassay, Staining Proteins on Membranes, Blotting Buffer, Staining of proteins in gels - [Read ENZYME-ASSISTED IMMUNOELECTROBLOTTING (IEB OR WESTERN BLOTTING)]
Gel Filtration Column Chromatography Protocol. Includes information on: Calibrating the column, Applying standards to the column, Running SDS-PAGE Gels (Tris-Tricine “Schägger†Gels) and includes questions. North Arizona University. - [Read Gel Filtration Column Chromatography]
The transfer of proteins from a Tris/glycine SDS-polyacrylamide gel to a membrane using a semi-dry method is achieved by placing the gel next to a piece of nitrocellulose filter. This sandwich is placed directly between two plate electrodes, and the proteins are then transferred from the gel onto the filter. - [Read Immunoblotting: Semi-Dry Electrophoretic Transfer of Proteins from Gels to Membranes Protocol]
Transfer of proteins from a Tris/glycine SDS-polyacrylamide gel to a membrane using the submerged method is achieved by placing the gel next to a piece of nitrocellulose filter, submerging this sandwich in a large volume of transfer buffer in a transfer tank, and running current from one side of the transfer tank to another. The proteins are then eluted by transferring them from the gel onto the filter. - [Read Immunoblotting: Submerged Electrophoretic Transfer of Proteins from Gels to Membranes Protocol]
In-Gel Digestion Protocol. Excision of protein bands (spots) from polyacrylamide gels Reduction and alkylation . Reduction and alkylation . MALDI analysis of the supernatant after in-gel digestion. Extraction of Peptides.Matthias Wilm EMBL Bioanalytical R - [Read In-gel digestion of proteins to be analyzed by mass spectrometry]
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.