Description:
Raji cell lysate was prepared by homogenization in modified RIPA buffer (150 mM
sodium chloride, 50 mM Tris-HCl, pH 7.4, 1 mM ethylenediaminetetraacetic acid, 1 mM
phenylmethylsulfonyl fluoride, 1% Triton X-100, 1% sodium deoxycholic acid, 0.1%
sodium dodecylsulfate, 5 μg/ml of aprotinin, 5 μg/ml of leupeptin. Cell debris was
removed by centrifugation. Protein concentration was determined with Bio-Rad protein
assay. The MCF7 lysate was boiled for 5 min in 1 x SDS sample buffer (50 mM Tris-HCl
pH 6.8, 12.5% glycerol, 1% sodium dodecylsulfate, 0.01% bromophenol blue) containing
5% β-mercaptoethanol.