In this experiment, we want to want to compare the levels of endogenous cofilin and cofilin-eYFP expressed under an inducible promoter with different levels of dox induction. This will allow us to determine what level of expression of cofilin would lead to the best signal:noise ratio of binding of exogenous cofilin. We are planning to transfect HEK293 with cofilin-eYFP under a TRE promoter and induce with varying levels of dox. We will then preform a Western blot with an anti-cofilin primary antibody and compare band sizes to test for the relative amounts of endogenous cofilin and exogenous cofilin-eYFP in the cells.
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