Abstract
Western blotting (protein blotting/electroblotting) is the gold standard in the analysis of complex protein mixtures. Electroblotting drives protein molecules from a polyacrylamide (or less commonly, of an agarose) gel to the surface of a binding membrane, thereby facilitating an increased availability of the sites with affinity for both general and specific protein reagents. The analysis of these complex protein mixtures is achieved by the detection of specific protein bands on a membrane, which in turn is made possible by the visualization of protein bands either by chemical staining or by reaction with an antibody of a conjugated ligand. Chemical methods employ staining with organic dyes, metal chelates, autoradiography, fluorescent dyes, complexing with silver, or prelabeling with fluorophores. All of these methods have differing sensitivities and quantitative determinations vary significantly. This review will describe the various protein staining methods applied to membranes after western blotting. “Detection” precedes and is a prerequisite to obtaining qualitative and quantitative data on the proteins in a sample, as much as to comparing the protein composition of different samples. “Detection” is often synonymous to staining, i.e., the reversible or irreversible binding by the proteins of a colored organic or inorganic chemical.
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Dsouza, A., Scofield, R.H. (2015). Protein Stains to Detect Antigen on Membranes. In: Kurien, B., Scofield, R. (eds) Detection of Blotted Proteins. Methods in Molecular Biology, vol 1314. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-2718-0_5
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DOI: https://doi.org/10.1007/978-1-4939-2718-0_5
Publisher Name: Humana Press, New York, NY
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