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YY1 binds to αMyHC and BNP promoters. ChIPs were done in noninfected cells, in cells overexpressing YY1 or in cells transfected with YY1 siRNA as described in the methods section. ChIPs from cells infected with YY1 or transfected with YY1 siRNA are a result of six independent experiments. YY1 or RNA polymerase antibodies, or IgG were used in the immunoprecipitation assay.
