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Figure 6


Fig. 6. Hipk proteins can bind to Tcf/Lef1 and Arm/β-catenin. (A) HEK293T cells were co-transfected with HA-Hipk and Myc-Tcf. Cell lysates were immunoprecipitated (IP) with anti-HA, anti-Myc or IgG (control) antibodies and extracts were visualized by western blotting (WB) using anti-HA or anti-Myc antibodies, for Hipk and Tcf, respectively. (B) Myc-Hipk and HA-Arm plasmids were co-transfected into HEK293T cells. Lysates were incubated with anti-HA, anti-Myc or IgG (control) antibodies and immunoprecipitates were detected through WB with anti-HA or anti Myc, for Arm and Hipk, respectively. (C) Mammalian Hipk2 interacts with both β-catenin and Lef1. Flag-Hipk2 and T7-Lef1 or β-catenin were co-transfected into HeLa cells. Cell lysates were immunoprecipitated with indicated antibodies and protein complexes were visualized by immunoblotting with Flag, T7 and β-catenin. Hipk2 bound to T7-Lef1{Delta}N and T7-Lef1{Delta}C, deletion mutants that lack the β-catenin and HMG-binding domains, respectively.





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