Sentences with phrase «sepharose 4b»

For the in vitro GST pull - down assay, 20 μL of glutathione - Sepharose 4B beads (Amersham Pharmacia Biotech) with immobilized GST or GST / Sp1 fusion proteins (4 μg each) were incubated with HuH - 7 whole - cell extracts (500 μg) at 4 °C for 6 hours.

Total cell lysates of HuH - 7 cells were incubated with GST or GST - Sp1 fusion protein — prebound glutathione - Sepharose 4B beads and the bound fractions were subjected to immunoblotting with antibody against DDX3 (top).