Immunoprecipitation and imunoblotting were performed as described previously [26 (link)]. The reagents were as following: anti-β-catenin (BD Bioscience, Cat# 610153), anti-γ-catenin (BD Bioscience, Cat# 610253), anti-CBP (Santa Cruz, clone SC-369), anti-p300 (Santa Cruz, clone SC-584), anti-activated- β-catenin (Millipore, clone 8E7), anti-lamin A/C (Santa Cruz, SC-7293), NE-PER Nuclear extraction reagent (Pierce, Cat#78833), Protease inhibitor cocktail (Calbiochem, Cat#539137), Protein A-agarose (Roche, Cat#11134515001), Illustra microspin columns (GE Healthcare, Cat#27-3565-01), ECL Plus (GE Healthcare, Cat#RPN 2132), and Blue ultra autorad film (BioExpress, Cat# F9029-8X10).
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