(240)-343-2585

Western blot is a technique used in scientific investigations to isolate as well as identify polypeptides. In this method, an assortment of polypeptides is resolved based on molecular weight, and hence by type, by gel electrophoresis. Consequently, the proteins are then relocated to a microporous membrane generating a band for each protein. The microporous membrane is then incubated with antibodies particular to the protein being studied. The unattached antibody is then washed off, leaving only the antibody attached to the protein investigated. The bound antibodies are then visualized by processing the film. Since the antibodies only bind to the protein being studied, only a single band should be detectable. Besides, the thickness of the band relates to the quantity of protein present. hence running a standard can demonstrate the protein present in the cell extract (Mahmood and Ping Chang, 2012).