Fig. 3.
COP1 interacts with Sox2 directly. a Cells were transfected with indicated constructs and siRNA. Flag-Sox2 was immunoprecipated with anti-Flag and immunoblotted with anti-Myc. b HEK293T cells were transfected with indicated constructs and siRNA, and Sox2 was immunoprecipated with anti-Flag and immunoblotted with anti-Myc. c HEK293T cells were transfected with indicated constructs and western blot was performed to measure the expression of Flag-Sox2, Flag-COP1, and Myc-DET1. d Increasing amounts of Flag-COP1 were co-transfected together with Flag-Sox2 and DET1 into HEK293T cells and ectopic Flag-Sox2 expression was detected. e The predicted work model of CUL4ADET1-COP1 for Sox2 degradation. The representative images are shown from three independent experiments. Unprocessed original scans of blots are shown in Supplementary Fig. 9