Covers Many Western Blot Problems and Includes Many Solutions. Fuzzy Bands, Low or Weak Signal, High Background, Spots on Film, Too Many Bands. A MolecularStation Guide. - [Read Troubleshooting Western Blot]
Solutions for Agarose gel prepartion, Selection of Appropriate Gel Size and Composition. Mycology Lab
University of Tennessee - [Read Agarose Gel Preparation Protocol]
Working concentrations and stock solutions for antibiotics, preparation of stock solutions for Ampicillin, Kanamycin and others. Practical Molecular Biology - [Read Antibiotic solutions]
Antibiotic stock solutions preparation, Storage conditions for antibiotics, Working Concentrations for
high copy plasmids. Kay Schneitz Univ Zurich. - [Read Antibiotics]
Working concentrations and stock solutions and which antibiotics are light sensitive. Preparation of stock solutions and calculator tool to calculate concentrations for stock solutions. Practical Molecular Biology. - [Read Antibiotics. and Antibiotics Stock Calculator Tools]
The bradford dye-binding assay is a colorimetric assay for measuring total protein concentration. It involves the binding of Coomassie Brilliant blue to protein. There is no interference from cations nor from carbohydrates such as sucrose.
Detergents such as sodium dodecyl sulfate and triton x-100 can interfere with the assay, as well as strongly alkaline solutions.
Includes a general overview of the procedure and preparation of the standards in the protocol. - [Read Bradford Assay Method]
Buffer calculator tool for commonly used buffer compound solutions. Making different volumes? use this! (Practical Molecular Biology) - [Read Buffer calculator tool]
Ultrafiltration is an alternative to ethanol precipitation for the concentration and desalting of nucleic acid solutions. It requires no phase change and is particularly useful for dealing with very low concentrations of nucleic acids. This protocol describes the use of the Microcon cartridge, a centrifugal ultrafiltration device, to concentrate and desalt nucleic acid solutions. - [Read Concentrating and Desalting Nucleic Acids with Microconcentrators Protocol]
Preparation of oligo solutions
PCR experiments, Digestion of insert DNA, Digestion and dephosphorylation of vector DNA, Ligation of DNA fragments with sticky ends, Ligation of DNA fragments with blunt ends,
Preparation of chemically competent E. coli - [Read EMBL Cloning protocols]
Protocol for fission yeast media. Includes: YES (yeast extract with supplements) for rich complete media; YSO, for modified rich media; EMM (Edinburgh minimal medium) for minimal selective media; stock solutions to make up minimal media; MB, a very stringent minimal for transformation; Sporulation media; ME (malt extract); SPAS; EMMGlut. - [Read Fission Yeast Media Protocol]
Treating cells with paraformaldehyde leads to the establishment of chemical cross-links between free amino groups. When the cross-links join different molecules, a latticework of interactions occurs that holds the overall architecture of the cell together. Commercial formaldehyde solutions are not recommended, because they lack the advantages of using a variable-length polymer, and the cells will simultaneously be fixed with the alcohol (usually methanol). - [Read Fixing Attached Cells in Paraformaldehyde Protocol]
Method describes how to modify the termini of PCR products by introducing restriction sites and other features. To reduce the chance of contamination with exogenous DNAs, prepare and use a special set of reagents and solutions for PCR only. Bake all glassware for 6 hours at 150°C and autoclave all plasticware. - [Read Genetic Engineering with PCR Protocol]
Method describes how to modify the termini of PCR products by introducing restriction sites and other features. To reduce the chance of contamination with exogenous DNAs, prepare and use a special set of reagents and solutions for PCR only. Bake all glassware for 6 hours at 150°C and autoclave all plasticware. - [Read Genetic Engineering with PCR Protocol]
Glass is an excellent substrate for most tissue-culture-adapted cells and is compatible with all fixing and staining solutions. Glass coverslips in tissue-culture dishes or in 24-well multiwell plates are suitable carriers, as are multiwell slides. For high-resolution studies, choose glass coverslips of the highest available grade; #1 or #1.5 coverslips are the appropriate thickness. - [Read Growing Adherent Cells on Coverslips or Multiwell Slides Protocol]
Unlike spherical phage, such as T4 and λ, which have roughly equal weight ratios of protein to DNA, filamentous phage have about six times more protein than DNA; the protein therefore contributes substantially to the absorption spectrum.
3' Rapid Amplification of cDNA Ends RACE Using PCR Protocol. This protocol contains the steps for 3' end rapid amplification of mRNA by PCR. The first-strand cDNA is synthesized from total or poly(A+) RNA by priming from the poly-A tail of the mRNA using a oligo (dT) adaptor primer. The cDNA is then amplified via PCR using a gene-specific primer and an adaptor primer.
Histone H1 Kinase Activity Assay Protocol. This protocol describes assaying kinase activity of a putative kinase using Histone H1 as the substrate. Histone H1 is the canonical kinase substrate in this type of assay. Phosphorylation of Histone H1 is assessed by SDS-Polyacrylamide gel electrophoresis followed by autoradiography.
This protocol a protocol on how to generate transfected embryonic stem (ES) cell clones. The previous protocol in this series is the Protocol for Electroporation of ES cells. The next protocol in the series is the Protocol on Disaggregation, Expansion, and Freezing of Transfected ES Clones.
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.