Total cellular protein extractions were carried out as described previously[53 (link)], and quantified using Bradford reagent (Bio-Rad), according to manufacturer’s instructions. A total of 50 μg of protein per sample was run on a 4% stacking and 12% resolving, self-made gel before being transferred to a membrane as described previously[14 (link)]. Blocking, primary (1:2000 dilution of the mouse monoclonal GFP antibody, #sc-9996, Santa Cruz Biotechnology) and secondary antibody (1:2000 dilution,[14 (link)]) incubations, and membrane revelation was carried out as described previously[14 (link)].
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