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Analysis of purified WT and mutant GST-E1DBD proteins. Each protein was expressed and purified on glutathione-Sepharose as described in Materials and Methods; 100 ng of each protein was electrophoresed on an SDS–10% polyacrylamide gel and then stained with Coomassie blue. The molecular masses of the marker proteins (lane M) are indicated in kilodaltons.
