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Western blot workflow. The western blot (sometimes called the protein immunoblot), or western blotting, is a widely used analytical technique in molecular biology and immunogenetics to detect specific proteins in a sample of tissue homogenate or extract. [1]
Immunoscreening is a method of biotechnology used to detect a polypeptide produced from a cloned gene.The term encompasses several different techniques designed for protein identification, such as Western blotting, using recombinant DNA, and analyzing antibody-peptide interactions.
Immunoprecipitation of intact protein complexes (i.e. antigen along with any proteins or ligands that are bound to it) is known as co-immunoprecipitation (Co-IP). Co-IP works by selecting an antibody that targets a known protein that is believed to be a member of a larger complex of proteins.
Immunohistochemistry can be performed on tissue that has been fixed and embedded in paraffin, but also cryopreservated (frozen) tissue.Based on the way the tissue is preserved, there are different steps to prepare the tissue for immunohistochemistry, but the general method includes proper fixation, antigen retrieval incubation with primary antibody, then incubation with secondary antibody.
Similar to a western blot, the far-western blot uses protein–protein interactions to detect the presence of a specific protein immobilized on a blotting matrix. Antibodies are then used to detect the presence of the protein–protein complex, making the Far-Western blot a specific case of the Western blot.
The southwestern blot, is a lab technique that involves identifying as well as characterizing DNA-binding proteins [1] by their ability to bind to specific oligonucleotide probes. Determination of molecular weight of proteins binding to DNA is also made possible by the technique.
A dot blot (or slot blot) is a technique in molecular biology used to detect proteins. It represents a simplification of the western blot method, with the exception that the proteins to be detected are not first separated by electrophoresis. Instead, the sample is applied directly on a membrane in a single spot, and the blotting procedure is ...
This range is compatible with typical protein loads in quantitative western blots and enables loading control calculations over a wide protein-loading range. [29] [4] A more efficient stain-free method has also recently become available. [30] [31] When using high protein loads, stain-free technology has demonstrated greater success than stains ...