Solvent partition protocol allows the isolation of gangliosides from small samples and from samples where ganglioside concentrations are low, especially relative to the concentration of potentially contaminating proteins and other large molecular weight species. Stephan Ladisch Director, Center for Cancer and Transplant Biology, Children's National Medical Center, Washington, D.C. - [Read A Method for Micro-Scale Isolation and Purification of Gangliosides]
A Strategy for the Rapid Identification of
Phosphorylation Sites in the
Phosphoproteome. MacDonald et al., Molecular & Cellular Proteomics. 2002. - [Read A Strategy for the Rapid Identification of]
Working concentrations and stock solutions for antibiotics, preparation of stock solutions for Ampicillin, Kanamycin and others. Practical Molecular Biology - [Read Antibiotic solutions]
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]
Buffer calculator tool for commonly used buffer compound solutions. Making different volumes? use this! (Practical Molecular Biology) - [Read Buffer calculator tool]
The combination of prospective identification/isolation of bone marrow progenitors and quantitative RT-PCR is a powerful tool to understand the molecular mechanism underlying hematopoiesis. Describes the standard procedures of the murine myeloid progenitor staining for fluorescence activated cells sorting (FACS) and RNA purification methods. - [Read Cell Staining for Sorting of Hematopoietic Stem Cells (HSC) and Myeloid Progenitors]
The combination of prospective identification/isolation of bone marrow progenitors and quantitative RT-PCR is a powerful tool to understand the molecular mechanism underlying hematopoiesis. Here, we described our standard procedures of the murine myeloid progenitor staining for fluorescence activated cells sorting (FACS) and RNA purification methods. - [Read Cell Staining for Sorting of Hematopoietic Stem Cells and Myeloid Progenitors and Isolating RNA]
Chromatin immunoprecipitation protocol to analyze histone modifications in Arabidopsis thaliana. Werner Aufsatz, Matzke Lab. Gregor Mendel Institute of Molecular Plant Biology, Austria. Includes Chromatin Crosslinking, Chromatin preparation, Pre-clearing and immuno precipitation (IP), Collection,washes and elution of immune complexes, Reverse crosslinking and DNA cleanup - [Read Chromatin immunoprecipitation protocol to analyze histone modifications in Arabidopsis thaliana]
Protocol for Colorimetric Assay to Identify Putative Ribofuranosylaminobenzene 5'-Phosphate Synthase Genes. The production of active RFAP synthase from Methanothermobacter thermautotrophicus was achieved by coexpression of the gene MTH0830 with a molecular chaperone. This is the first direct biochemical identification of a methanogen gene that codes for an active RFAP synthase. - [Read Colorimetric Assay to Identify Putative Ribofuranosylaminobenzene 5'-Phosphate Synthase Genes]
Protocol describes how to construct a library of 35-45-kb fragments of genomic DNA in the double cos site cosmid vector, SuperCos-1. The steps include: Linearization and dephosphorylation of SuperCos-1 DNA; Partial digestion of high-molecular-weight DNA with MboI; Dephosphorylation of high-molecular-weight genomic DNA; Ligation of cosmid arms to genomic DNA: Packaging and plating recombinants; Isolation and analysis of recombinant cosmids: Validation of the library. - [Read Construction of Genomic DNA Libraries in Cosmid Vectors Protocol]
DNA digestion protocol & hints. Procedure and tips for restriction digestion. Doering laboratory, Department Molecular Microbiology, Washington University Medical School. - [Read DNA digestion protocol & hints PDF]
DNA Electroelution- http://rothlab.ucdavis.edu/protocols/dna-electroelution.html
DNA Electroelution. This protocol describes the purification of DNA by trapping in a high-salt cushion in a "UEA AnalyticalElectroeluter" (IBI). This machine is no longer manufactured, to our knowledge. However, a smiliar device can be easily made from Plexiglas according to the following diagram, taken from Cornel Mulhardt, Molecular Biology and Genomics (2007) Academic Press, p.52: Schimenti Lab - [Read DNA Electroelution]
Polybrene and DMSO can be used to achieve stable transformation of several types of cells by plasmid DNA. The yield of transformants is up to 15-fold greater with Polybrene than with calcium phosphate-DNA coprecipitation. However, there is no difference between the two methods in the efficiency of transformation of cells by high-molecular-weight DNA. - [Read DNA Transfection Using Polybrene Protocol]
Microsatellite markers, also referred to as STMS (SequenceTagged Microsatellite Sites) or STR (Short Tandem Repeats) are widely used as molecular markers for intraspecific genotyping, molecular mapping and breeding purposes. The method described is an efficient,fast and relatively inexpensive way to obtain microsatellite markers without post-cloning selection methods. So far, the method has been successful in onion (Allium cepa L.), a plant with a large genome and for pathogenic fungi. - [Read Enrichment for Microsatellite Sequences in Onion (Allium cepa L.) Protocol]
Paraffin Embedding Protocol for molecular profiling. This Paraffin Embedding Protocol describes the processing of the tissues into sections following ethanol fixation. Molecular profiling (MP) is a technique that is used to visualize the global patterns of RNA expression or protein expression in various cell types and disease processes.
The DNA Ligation protocol described here contains the steps required to join together using ligase enzyme both plasmid DNA and insert DNA fragments in order to create a new plasmid. This new ligated plasmid can be transformed after into competent bacteria to produce DNA for mini, midi or maxi-prep isolation.