(A and B) Rab2A promoted the nuclear translocation of unphosphorylated β-catenin (active form). HMLE cells were serum starved and then stimulated by EGF for the indicated time points.
(C–E) Pin1 also promoted the nuclear translocation of unphosphorylated β-catenin and Rab2A overexpression in Pin1 KD cells rescued Erk1/2 activation and β-catenin translocation from the cell membrane to the nucleus.
(F and G) Rab2A KD in Pin1-overexpressing or vector control cells inhibited p-Erk1/2 activation and β-catenin nuclear translocation. Scale bars represent 10 μm.
(H) Rab2A promoted the nuclear accumulation of p-Erk1/2 and unphosphorylated β-catenin. Nuclear and total proteins were extracted after EGF stimulation following serum starvation.